MAX125/MAX126 Evaluation Systems/Evaluation Kits MAX125/MAX126 ev

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MAX125/MAX126 Evaluation Systems/Evaluation Kits MAX125/MAX126 ev

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MAX125/MAX126 Evaluation Systems/Evaluation Kits
MAX125/MAX126 evaluation systems systems) consist MAX125/MAX126 evaluation kit) Maxim 68HC16MOD-16WIDE microcontroller (µC) module. MAX125/MAX126 high-speed, 8-channel, 14-bit data-acquisition systems with four simultaneous track/holds. Windows 3.1TM/Windows 95software provides handy user interface exercise MAX125/MAX126's features. Order complete system comprehensive evaluation MAX125/MAX126 with personal computer. Order have already purchased module (68HC16MOD-16WIDE) with another Maxim system desire custom other µCbased systems.
_Features
Proven Board Layout Complete Evaluation System Samples 40ksps Convenient Test Points Provided Board Data-Logging Software with Capability Fully Assembled Tested
Evaluate: MAX125/MAX126
Ordering Information*
PART MAX125EVKIT MAX125EVB16 MAX126EVKIT MAX126EVB16 TEMP. RANGE +70°C +70°C +70°C +70°C INTERFACE TYPE User Supplied Windows Software User Supplied Windows Software
Stand-Alone Kits
MAX125/MAX126 kits provide proven board layout facilitate evaluation MAX125/ MAX126. kits must interfaced appropriate timing signals proper operation. Apply dual power supplies (±8V min, ±20V max) connector (P1-5), P1-9, with ground P1-1. Connect active-low read strobe P1-38, write strobe P1-37, chip selects P1-35, convert-start signal P1-36 (Table Figure Refer MAX125/MAX126 data sheet timing requirements.
MAX125 software used only with complete evaluation system (MAX125EVB16 MAX126EVB16), which includes 68HC16MOD-16WIDE module together with MAX125EVKIT MAX126EVKIT.
Systems
MAX125/MAX126 systems operate from usersupplied +13V +20V power supply. Windows 3.1/Windows software running interfaces system board through computer's serial-communications port. software operated with without mouse. Refer Quick Start section setup operating instructions.
MAX125EVB16 System Component List
PART MAX125EVKIT 68HC16MOD-16WIDE DESCRIPTION MAX125 evaluation 68HC16 module with 16-bit parallel interface
MAX126EVB16 System Component List
PART MAX126EVKIT 68HC16MOD-16WIDE DESCRIPTION MAX126 evaluation 68HC16 module with 16-bit parallel interface
Table Power-Supply Timing Signal Connections
P1-1 P1-5 P1-9 P1-35 P1-36 P1-37 P1-38 POWER SUPPLY SIGNAL Ground Positive Supply, +20V Negative Supply, -20V Chip Select Convert-Start Write Strobe Read Strobe
Windows Windows trademarks Microsoft Corp.
Maxim Integrated Products
free samples latest literature: http://www.maxim-ic.com, phone 1-800-998-8800. small orders, phone 408-737-7600 ext. 3468.
MAX125/MAX126 Evaluation Systems/Evaluation Kits Evaluate: MAX125/MAX126
MAX125EVKIT/MAX126EVKIT Component List
DESIGNATION R2-R5 None None DESCRIPTION 0.1µF ceramic capacitors 10µF, tantalum capacitors 4.7µF, 6.3V tantalum capacitor 100pF ceramic capacitor 2x20 right-angle connectors 100, resistors 10k, resistors resistors Maxim MAX125 MAX126 78L05 voltage regulator 74HCT244 79L05 negative-voltage regulator 16MHz clock-oscillator module board Software disk: MAX125 Evaluation
Quick Start
Recommended Equipment
will need following equipment before begin: small power supply (+13V +20V 250mA) PC-compatible computer capable running Windows Windows spare serial-communications port, preferably 9-pin plug serial cable connect computer's serial port Maxim 68HC16MOD-16WIDE module
Connections Setup
Perform following steps evaluate MAX125 MAX126: Carefully connect boards aligning 40-pin headers MAX125/MAX126 with 40-pin connectors 68HC16MOD16WIDE module. Gently press them together. boards should flush against each other. Connect +13V +20V power source module terminal block (J2) next on/off switch, along edge module. Observe polarity marked board. Connect cable from computer's serial port module. With 9-pin serial port, straight-through, 9-pin female-to-male cable. only available serial port uses 25-pin connector, standard 25-pin 9-pin adapter required. software checks modem status lines (CTS, DSR, DCD) confirm that correct port been selected. Install software your computer running INSTALL.EXE program floppy disk. program files copied, icons created them Windows program manager Windows Start menu). software evaluates both MAX125 MAX126. Start program opening icon program manager Start menu). program prompts connect module turn power Slide position. Select correct serial port click program automatically downloads KIT125.B16 module. default device setting MAX125. using MAX126, select "MAX126" device characteristics dialog click "apply."
List Files MAX125
FILE INSTALL.EXE MAX125.EXE MAX125.HLP KIT125.B16 MAX125.INI UNINST.EXE FUNCTION Installs files onto your computer Application program Help file Loads software into 68HC16 Program settings Removes files from your computer
MAX125/MAX126 Evaluation Systems/Evaluation Kits
Apply input signals inputs labeled CH1A-CH4A bottom edge MAX125/ MAX126 board. Observe readout screen. optionally record readings into data-log file. Click "New Log" button begin data logging. "Log File Format" dialog displayed. complete line data written after enabled channels have been sampled. first line file contains column headings. Each subsequent line contains enabled channels, separated commas, tabs, spaces (previously selected "Log File Format" dialog box). Once file been opened, paused resumed with corresponding menu commands. program continues write data file until "Stop Log" button clicked.
Evaluate: MAX125/MAX126
Detailed Description Software
MAX125/MAX126 digitize four inputs from either input bank. Conversion time determined number enabled inputs. software collects samples maximum throughput 40ksps (one channel) 26ksps (four channels). various program functions grouped into dialog boxes, which accessible from Window menu main menu bar.
One-Shot Read Tool
"One-Shot Read Tool" allows direct control analog-to-digital converter (ADC) configuration. Select channel mode operation update "Control Byte" display. change "Control Byte" bits directly observe change "Channel Selection" control. "Read Now" button writes configuration information performs reading.
Keyboard Navigation
mouse other pointing device available, following keyboard shortcuts (Table Press ALT+W display Window menu, then select tool window. Press select controls within selected tool window. Activate buttons pressing spacebar. up/down arrow keys check boxes, radio buttons, combo boxes.
Power Cycling Tool
reduce average supply current demand, MAX125/MAX126 shut down between conversions. From Window menu, select "Power Cycling Tool." amount power saved depends primarily long part between conversions. Conversion accuracy depends power-up delay, reference capacitor, time power-down. Adjust off-time with "Delay Between Samples" command. Adjust on-time with "Power-Up Delay" command. Using adequate power-up delay ensures that desired conversion accuracy achieved during powercycling modes. reference must allowed enough time stabilize before measurement performed. Start with zero power-up delay, increase delay time until further change accuracy observed. power-up delay requirement depends value reference capacitor off-time (delay between samples). MAX125/MAX126 software performs powerup writing configuration word with shutdown cleared. After power-up, power-up delay executed allow time reference voltage stabilize that accurate measurement performed.
Scan Tool
automatically take readings regular intervals samples second from user-selected channels selecting Scan Tool from Window menu. "Channel Selection Configuration" group controls which channels will scanned. "Bipolar Differential" controls disabled because MAX125/MAX126's transfer function bipolar. "Scan Rate" combo controls rate which measurements made. Readings displayed "Recent Values" text area.
Table Keyboard-Navigation Shortcuts
ALT+W ALT+space ALT+minus Spacebar ALT+PrintScreen FUNCTION Selects next control Window menu System menu main program window System menu child window Clicks selected button Copies image main window onto clipboard
MAX125/MAX126 Evaluation Systems/Evaluation Kits Evaluate: MAX125/MAX126
Sampling Tool
sample data rates 40ksps, select "Sampling Tool" from Window menu, make your selections, click Start button. Adjust timing delays appropriate control sample rate. Estimate effective sample rate taking reciprocal delay between samples, power-up delay, conversion time. Sample size restricted power that "Fast Fourier Transform" (FFT) tool process data. "Sample Size" controls number samples collected each selected channel. After samples have been collected, data automatically uploaded host graphed. Once displayed, data optionally saved file.
Changing Reference Voltage software assumes 2.5V reference voltage, unless otherwise specified. Apply external 2.5V reference REFIN overdrive internal reference. MAX125/MAX126 data sheet more information. From Window menu, select "Device Characteristics." Next, type reference voltage into "Reference Voltage" edit box.
Detailed Description Hardware
(U1) 8-channel, 14-bit data-acquisition system with four simultaneous track/holds. Linear regulators provide clean analog power supplies ADC. filter digital noise analog power supply. isolates CONVST signals from main system further prevent digital noise from entering ADC. filter clock oscillator prevent overshoot input. MAX125/MAX126's chip-select (CS) memorymapped location 7E000 68HC16 module. This location used writing configuration bytes reading data. convert-start (CONVST) signal also memory-mapped asserted memoryaccess cycle when memory location 7E800 accessed. MAX125/MAX126's interrupt (INT) output triggers interrupt 68HC16 through input capture vector.
Tool
software includes tool that display spectral content data collected with highspeed sampling tool. view spectral content waveform, first select data sample that previously collected with "Sampling Tool." Then select "FFT Tool" from Window menu. Check output plots desired click Start button. data-windowing function preprocesses data sample before performing FFT.1) When input signal synchronized sampling clock, spectral energy appears leak into nearby frequency buckets. suitable data window tapers data zero amplitude beginning end, reducing this spectral leakage.
Measuring Supply Current
monitor supply current, measure voltage across resistor (for supply) (for supply). These resistors ±1%, every across represents 10µA supply current.
Device Characteristics
"Device Characteristics" dialog contains parameters that expected change often. device selection used select between MAX125 MAX126.
Table Troubleshooting Guide
PROBLEM output measurement. System seems report zero voltage fails make measurement. CORRECTIVE ACTIONS Check supply voltages. Check 2.5V REFOUT reference voltage using digital voltmeter. oscilloscope verify that 16MHz clock running that conversion-start signal being strobed.
Evaluating MAX126 MAX125 software evaluate MAX126 directly. From Window menu, select "Device Characteristics." Next, change device type from MAX125 MAX126. This tells program that input voltage span ±VREF instead ±2VREF.
more information data-windowing functions, refer W.H. Press, al., Numerical Recipes Pascal: Scientific Computing, Cambridge University Press, 1989, ISBN 0-521-37516-9.
P1-5 N.C. P2-1 D0/A0 D1/A1 D2/A2 D3/A3 CH4A CH4A 100pF REFIN 0.1µF REFOUT 0.1µF REFOUT 4.7µF 6.3V CONVST DGND AVSS AGND AGND REFIN CH4B CH4B CH3A CH3A CH3B CH3B CH2B CH2B CH2A CH2A CH1B CH1B CH1A CH1A P2-2 P2-3 P2-4 P2-5 P2-6 P2-7 DVDD AVDD 0.1µF 0.1µF N.C. 0.1µF 10µF
LM78L05ACM
P1-6
Figure MAX125 Schematic
P2-14 P1-20 P2-13 P2-12 P2-11 74HCT244 P2-10 P2-9 P2-8
+12V
CS7/7E000
P1-35
P1-38
16MHz OSCILLATOR
P1-37
MAX125 MAX126
CS8/7E800
P1-36
74HCT244
N.C. 10µF 0.1µF N.C.
LM79L05ACM
P1-1 P1-2 0.1µF P1-3 P1-4
P1-9
Evaluate: MAX125/MAX126
-12V
MAX125/MAX126 Evaluation Systems/Evaluation Kits
MAX125/MAX126 Evaluation Systems/Evaluation Kits Evaluate: MAX125/MAX126
1.0"
1.0"
Figure MAX125/MAX126 Component Placement Guide
Figure MAX125/MAX126 Board Layout- Component Side
MAX125/MAX126 Evaluation Systems/Evaluation Kits Evaluate: MAX125/MAX126
1.0"
Figure MAX125/MAX126 Board Layout-Solder Side
MAX125/MAX126 Evaluation Systems/Evaluation Kits Evaluate: MAX125/MAX126
NOTES
68HC16MOD-16WIDE
Component List
DESIGNATION C8-C12, LED1 DESCRIPTION 10µF, electrolytic capacitor 0.1µF ceramic capacitors ceramic capacitor 22µF, electrolytic capacitors 22pF ceramic capacitors 100µF, electrolytic capacitor 1N4001 diode 1N4742A 12V, zener diode 2-circuit terminal block Right-angle printed circuit board mount, female socket Light-emitting diode 40-pin right-angle male connectors 10M, resistor 330k, resistor 10k, resistors 470, resistor 10k, resistor 100, resistor None None DESIGNATION DESCRIPTION Slide switch Momentary pushbutton switch 68HC16 microcontroller MC68HC16Z1CFC16 (132-pin plastic quad flat pack) Maxim MAX233CPP 27C256 EPROM containing monitor program 28-pin socket 7805 regulator, TO-220 size Heatsink, thermalloy 6078 62256 (32K static RAMs 74HCT245 bidirectional buffers 20-pin sockets Maxim MAX707CPA Maxim ICL7662CPA 32.768kHz watch crystal Rubber feet printed circuit board
68HC16MOD-16WIDE
68HC16MOD-16WIDE module assembled tested printed-circuit board intended with Maxim's high-speed evaluation kits kits). module uses full 16-bit implementation Motorola's MC68HC16Z1 microcontroller (µC). requires IBMcompatible personal computer external power supply, typically specified manual. Maxim's 68HC16MOD-16WIDE module allows customers evaluate selected Maxim products. intended used microprocessor development platform, such supported Maxim.
Detailed Description
Power Input Connector
68HC16MOD-16WIDE module draws power from user-supplied power source connected terminal block sure note positive negative markings board. three-terminal regulator allows input voltages between absolute maximum 20V. 68HC16MOD-16WIDE module typically requires 200mA input current.
68HC16 Microcontroller
Motorola's 68HC16Z1 Contact Motorola information, development, support. Maxim kits 16-bit wide high-speed queued serial peripheral interface (QSPITM) internal chip-select generation. MAX707 module (U7) monitors logic supply, generates power-on reset, produces reset pulse whenever reset button pressed.
QSPI trademark Motorola Corp. Maxim Integrated Products
free samples latest literature: http://www.maxim-ic.com, phone 1-800-998-8800. small orders, phone 408-737-7600 ext. 3468.
68HC16MOD-16WIDE 68HC16MOD-16WIDE
68HC16MOD-16WIDE module uses phase-locked loop (PLL) speed. Crystal 32.768kHz frequency reference. internal oscillator runs times faster than external crystal. When 68HC16MOD-16WIDE module reset, waits lock before executes software. After locks onto reference frequency, software doubles clock speed writing clock synthesizer control register, selecting speed 16.78MHz. user area, 32kbyte CMOS static RAMs. 74HCT245 octal buffers 68HC16MOD16WIDE module access 16-bit port interface connectors. This memory-mapped port consists separate read write strobes, four chip selects, four address LSBs, sixteen data bits.
Table Serial Communications Port
NAME None FUNCTION Handshake; hard-wired RS-232-compatible data output from 68HC16MOD-16WIDE module RS-232-compatible data input 68HC16MOD-16WIDE module Handshake; hard-wired Signal ground connection Handshake; hard-wired Handshake; hard-wired Handshake; hard-wired Unused
Boot
boot ROM, configured 8-bit memory device. Resistor pulls data during system reset, forcing fetch instructions using only upper eight data bits. boot checks system waits commands from host. Refer manual specific start-up procedures.
Serial Communications
RS-232 serial port, designed compatible with 9-pin serial port. straightthrough male-to-female cable connect this port. only available serial port 25-pin connector, standard 25-pin 9-pin adapter. Table shows pinout MAX233 RS-232 interface voltage level-shifter with transmitters receivers. includes built-in charge pump with internal capacitors that generates output voltages necessary drive RS-232 lines.
Software
software supplied disk with kit. Instructions operating software included manual. Refer manual more information. 68HC16MOD-16WIDE module only with those kits that designed support only download code that targeted 68HC16MOD-16WIDE module. Downloading incorrect object code into 68HC16MOD-16WIDE module will have unpredictable results.
40-Pin Connectors
headers connect 68HC16MOD-16WIDE module Maxim kit. Table lists function each pin.
Address Ranges
68HC16 generates various enable signals different address ranges. enable signals directly respective chips. Several additional signals (P1-33 P1-36) available data connector used Maxim kits. Table outlines address ranges each elements found 68HC16MOD-16WIDE module, Table truth table that describes logic each module's chip-select outputs. Because addresses completely decoded, boot shadow address 08000 hex.
68HC16MOD-16WIDE
Self Check
68HC16MOD-16WIDE module includes self-diagnostic routine, which checks power supply, microprocessor, RAM, ROM, independent computer. Note that does exercise RS-232 port 80-pin interface. Connect power supply power terminals (J2) slide power switch "ON" position. will light will flash within seconds. flashes with duty cycle, then module passed self check. flashes with 10%-on/90%-off duty cycle, then module failed self check. Most likely, chips bad. remains does flash, then problem either (the EPROM), (the microprocessor), (the regulator), MAX707 reset generator, power supply. voltmeter verify that power supplies good; check power-supply input output from regulator. oscilloscope 32.768kHz reference oscillator running.
68HC16MOD-16WIDE
Table Data-Connector Signals
HEADER NAME VPREREG -12V PCS2 PCS3 PCS0/SS PCS1 MOSI MISO PWMB PWMA 68HC16-16WIDE MODULE FUNCTION Ground return +12V from wall cube from 78M05 -12V from ICL7662 (typically 15mA load) QSPI peripheral chip select QSPI peripheral chip select QSPI peripheral chip select QSPI peripheral chip select QSPI Master Output, Slave Input QSPI Serial Clock used QSPI Master Input, Slave Output General purpose I/O; Input Capture used General purpose I/O; Input Capture used General purpose I/O; Output Compare General purpose I/O; Input Capture used used General purpose I/O; Output Compare General purpose I/O; Output Compare General purpose I/O; Output Compare Pulse Accumulator Input General purpose I/O; Input Capture used Pulse-Width Modulator output (drives status LED) Pulse-Width Modulator output
68HC16MOD-16WIDE 68HC16MOD-16WIDE
Table Data-Connector Signals (continued)
HEADER 2-15 23-40 NAME
68HC16-16WIDE MODULE FUNCTION used Pulse Accumulator Clock Input Chip select strobe area $7F800 Chip select strobe area $7F000 Chip select strobe area $7E000 Chip select strobe area $7E800 Active write strobe area Active read strobe area used External data External data External data used Word address Word address Word address Word address used
PCLK CS10/7F800 CS9/7F000 CS7/7E000 CS8/7E800 CS5/WRIO CS1/RDIO
EXTD0 EXTD1-14 EXTD15
Table Memory (all address values 20-bit hex)
00000-07FFF 08000-0FFFF 10000-1FFFF 20000-203FF 20400-7DFFF 7E000-7E7FF 7E800-7EFFF 7F000-7F7FF 7F800-7FFFF 80000-F7FFF FUNCTION Boot (U3, strobed CSBOOT) Shadow boot User strobed CS2) Internal standby RAM; 1kbyte Unused External chip select (CS7) External chip select (CS8) External chip select (CS9) External chip select (CS10) accessed 68HC16 F8000-FF6FF FF700-FF73F FF740-FF8FF FF900-FF93F FF940-FF9FF FFA00-FFA7F FFA80-FFAFF FFB00-FFB07 FFB08-FFBFF FFC00-FFDFF FFE00-FFFFF Unused 68HC16's built-in (not used) Unused General-purpose timer module (GPT) Unused System integration module (SIM) Unused Internal standby (SRAM) control registers Unused Queued serial module (QSM) Unused FUNCTION
68HC16MOD-16WIDE 68HC16MOD-16WIDE
Table Chip-Select Outputs Truth Table
ADDRESS RANGE 0xxxx read 1xxxx read 1xxxx write 7E0xx read 7E0xx write 7E8xx read 7E8xx write 7F0xx read 7F0xx write 7F8xx read 7F8xx write CSBOOT CS10
LED1 PWMB
0.1µF
CS6/IOBUFFER CS1/RDIO
VPREREG -12V PCS2 PCO/SS MOSI PWMB CS10/7F800 CS7/7E000 CS5/WRIO
74HCT245
EXTD0 EXTD1 EXTD2 EXTD3 EXTD4 EXTD5 EXTD6 EXTD7
P1-1 P1-3 P1-5 P1-7 P1-9 P1-11 P1-13 P1-15 P1-17 P1-19 P1-21 P1-23 P1-25 P1-27 P1-29 P1-31 P1-33 P1-35 P1-37 P1-39
P1-2 P1-4 P1-6 P1-8 P1-10 P1-12 P1-14 P1-16 P1-18 P1-20 P1-22 P1-24 P1-26 P1-28 P1-30 P1-32 P1-34 P1-36 P1-38 P1-40
VPREREG -12V PCS3 PCS1 MISO PWMA PCLK CS9/7F000 CS8/7E800 CS1/RDIO
EXTD0 EXTD2 EXTD4 EXTD6 EXTD8 EXTD10 EXTD12 EXTD14
P2-1 P2-3 P2-5 P2-7 P2-9 P2-11 P2-13 P2-15 P2-17 P2-19 P2-21 P2-23 P2-25 P2-27 P2-29 P2-31 P2-33 P2-35 P2-37 P2-39
P2-2 P2-4 P2-6 P2-8 P2-10 P2-12 P2-14 P2-16 P2-18 P2-20 P2-22 P2-24 P2-26 P2-28 P2-30 P2-32 P2-34 P2-36 P2-38 P2-40
EXTD1 EXTD3 EXTD5 EXTD7 EXTD9 EXTD11 EXTD13 EXTD15
TSTME BKPT/DSCLK BKPT/DSCLK HALT BERR MODCLK DSACK1 DSACK0 IRQ7 CS6/IOBUFFER CS1/RDIO
RESISTOR
74HCT245
EXTD8 EXTD9 EXTD10 EXTD11 EXTD12 EXTD13 EXTD14 EXTD15
RESET
J4-1 J4-3 J4-5 J4-7 J4-9
J4-2 J4-4 J4-6 J4-8 J4-10
BERR BKPT/DSCLK FREEZE IPIPE1/DSI IPIPE0/DS0
Figure 68HC16MOD-16WIDE Module Schematic
68HC16MOD-16WIDE 68HC16MOD-16WIDE
0.1µF MISO MOSI PCSO/SS PCS1 PCS2 PCS3 CS10/7F800 CS9/7F000 CS8/7E800 CS7/7E000 CS6/IOBUFFER CS2/RDRAM CS1/RDIO
ADA6 ADA7 VSTBY XTAL VDDSYN EXTAL VSSI VDDI VDDE VSSE CLKOUT FREEZE/QUOT TSTME/TSC BKPT/DSCLK IPIPE0/DS0 IPIPE1/DS1 RESET HALT BERR IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 IRQ2 IRQ1 MODCLK SIZ1 SIZ0 VSSE
PCS3 PCS2 PCS1 PCS0/SS MOSI MISO VSSE VDDE VSSI VDDI IC4/OC5 PWMA PWMB PCLK VSSE VDDE ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 BGACK ADDR1 ADDR2 VDDE VSSE ADDR3 ADDR4 ADDR5 ADDR6 ADDR7 ADDR8 VSSI ADDR9 ADDR10 ADDR11 ADDR12 ADDR13 ADDR14 ADDR15 ADDR16 ADDR17 ADDR18 VDDE VSSE VDDA VSSA ADA0 ADA1 ADA2 ADA3 ADA4 ADA5
PWMA PWMB PCLK
MOTOROLA MC68HC16Z1CFC16
VDDE VSSE CSBOOT DATA0 DATA1 DATA2 DATA3 VSSI DATA4 DATA5 DATA6 DATA7 DATA8 DATA9 VDDE VSSE DATA10 DATA11 DATA12 DATA13 DATA14 DATA15 ADDRO DSACK0 DSACK1 AVEC VDDE
CSO/WRRAMHIGH CS5/WRIO CS3/WRRAMLOW CSBOOT/RDROM DSACKO DSACK1
XTAL
EXTAL
CLKOUT FREEZE TSTME BKPT/DSCLK IPIPEO/DS0 IPIPE1/DSI RESET HALT BERR IRQ7
0.1µF
Figure 68HC16MOD-16WIDE Module Schematic (continued)
MODCLK
68HC16MOD-16WIDE 68HC16MOD-16WIDE
330k 22pF 32.768kHz 22pF XTAL EXTAL
0.1µF
J3-8 J3-7 T1OUT T2OUT R1IN R2IN C216 C211
T1IN T2IN R1OUT R2OUT
J3-2
RESET
MAX707
N.C. RESET RESET
J3-3 J3-4 J3-6 J3-1 J3-5
RESET
C112
MAX233
POWER 1N4001 VPREREG CAP+ CAP8 ICL7662 VOUT 100µF IN4742A
J3-9
78M05
22µF
22µF
10µF
RESET
-12V
RESET
CSBOOT/RDROM
27C256
0.1µF
62256
I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7
0.1µF
62256
I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7
0.1µF
CS2/RDRAM CS3/WRRAMLOW
CS2/RDRAM CS0/WRRAMHIGH
8-BIT CMOS EPROM
8-BIT HIGH-SPEED CMOS STATIC
8-BIT HIGH-SPEED CMOS STATIC
Figure 68HC16MOD-16WIDE Module Schematic (continued)
68HC16MOD-16WIDE 68HC16MOD-16WIDE
1.0"
Figure 68HC16MOD-16WIDE Module Component Placement Guide
68HC16MOD-16WIDE 68HC16MOD-16WIDE
1.0"
Figure 68HC16MOD-16WIDE Module Board Layout-Component Side
68HC16MOD-16WIDE 68HC16MOD-16WIDE
1.0"
Figure 68HC16MOD-16WIDE Module Board Layout-Solder Side
68HC16MOD-16WIDE 68HC16MOD-16WIDE
NOTES
68HC16MOD-16WIDE 68HC16MOD-16WIDE
NOTES
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 1997 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

MAX125/MAX126 Evaluation Systems/Evaluation Kits MAX125/MAX126 ev

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