Kbit (64K EPROM EPROM supply voltage read operation Access time:

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Kbit (64K EPROM EPROM supply voltage read operation Access time:

Datasheet Thumbnail

Top Searches for this datasheet

M27C512
Kbit (64K EPROM EPROM
supply voltage read operation Access time: power "CMOS" consumption: Active current Standby current Programming voltage: 12.75 0.25 Programming time around Electronic Signature Manufacturer code: Device code: Packages ECOPACK® versions
FDIP28W
PDIP28
PLCC32
Table
Package
PDIP28 PLCC32
Device summary
M27C512-90B6 M27C512-70C6 M27C512-90C1 M27C51210C6 M27C51210F1 M27C51212C3 M27C51212F1 M27C51212F3 M27C512-15F1 M27C512-15F6
FDIP28W
M27C512-45XF1
M27C512-70XF1
M27C512-90F1 M27C512-90F6
2007
1/22
www.st.com
Contents
M27C512
Contents
Description Device operation
Read mode Standby mode line output control System considerations Programming PRESTO programming algorithm Program Inhibit Program Verify Electronic Signature
Erasure operation (applies EPROM) Maximum rating parameters Package mechanical Part numbering Revision history
2/22
M27C512
Description
Description
M27C512 Kbit EPROM offered ranges (ultra violet erase) (one time programmable). ideally suited applications where fast turn-around pattern experimentation important requirements organized 65536 bits. FDIP28W (window ceramic frit-seal package) transparent which allows user expose chip ultraviolet light erase pattern. pattern then written device following programming procedure. applications where content programmed only time erasure required, M27C512 offered FDIP28W, PDIP28, PLCC32 packages. order meet environmental requirements, offers M27C512 ECOPACK® packages. ECOPACK packages Lead-free. category second Level Interconnect marked package inner label, compliance with JEDEC Standard JESD97. maximum ratings related soldering conditions also marked inner label. ECOPACK trademark. ECOPACK specifications available www.st.com. Figure Logic diagram
A0-A15
Q0-Q7
GVPP
M27C512
AI00761B
Table
Signal names
Name Description Address Inputs Data outputs Chip Enable Output Enable Program Supply Supply Voltage Ground Connected Internally Don't Direction Inputs Outputs Input Input Supply Supply
A0-A15 Q0-Q7 GVPP
3/22
Description Figure connections
M27C512
AI00762
M27C512
GVPP
Figure
connections
GVPP M27C512
AI00763
4/22
M27C512
Device operation
Device operation
modes operations M27C512 listed Operating Modes table. single power supply required read mode. inputs levels except GVPP Electronic Signature.
Read mode
M27C512 control functions, both which must logically active order obtain data outputs. Chip Enable power control should used device selection. Output Enable output control should used gate data output pins, independent device selection. Assuming that addresses stable, address access time (tAVQV) equal delay from output (tELQV). Data available output after delay tGLQV from falling edge assuming that been addresses have been stable least tAVQV-tGLQV.
Standby mode
M27C512 standby mode which reduces active current from 30mA 100µA M27C512 placed standby mode applying CMOS high signal input. When standby mode, outputs high impedance state, independent GVPP input. Table Operating modes(1)
Mode Read Output Disable Program Program Inhibit Standby Electronic Signature
Pulse
GVPP
Q7-Q0 Data Hi-Z Data Hi-Z Hi-Z Codes
VIL, 0.5V. Electronic Signature
Data
Table
Identifier Manufacturer's Code Device Code
5/22
Device operation
M27C512
line output control
Because EPROMs usually used larger memory arrays, product features line control function which accommodates multiple memory connection. line control function allows:
lowest possible memory power dissipation, Complete assurance that output contention will occur.
most efficient these control lines, should decoded used primary device selecting function, while should made common connection devices array connected READ line from system control bus. This ensures that deselected memory devices their power standby mode that output pins only active when data required from particular memory device.
System considerations
power switching characteristics Advanced CMOS EPROMs require careful decoupling devices. supply current, ICC, three segments that interest system designer: standby current level, active current level, transient current peaks that produced falling rising edges magnitude transient current peaks dependent capacitive inductive loading device output. associated transient voltage peaks suppressed complying with line output control properly selected decoupling capacitors. recommended that 0.1µF ceramic capacitor used every device between VSS. This should high frequency capacitor inherent inductance should placed close device possible. addition, 4.7µF bulk electrolytic capacitor should used between every eight devices. bulk capacitor should located near power supply connection point.The purpose bulk capacitor overcome voltage drop caused inductive effects traces.
6/22
M27C512 Figure Programming flowchart
6.25V, 12.75V MARGIN MODE
Device operation
100µs Pulse VERIFY Last Addr Addr
FAIL
RESET MARGIN MODE CHECK BYTES 1st: 2nd: 4.2V
AI00738B
Programming
When delivered (and after each erasure EPROM), bits M27C512 state. Data introduced selectively programming '0's into desired locations. Although only '0's will programmed, both '1's '0's present data word. only change exposure ultraviolet light EPROM). M27C512 programming mode when input 12.75V pulsed VIL. data programmed applied bits parallel data output pins. levels required address data inputs TTL. specified 6.25V 0.25V. M27C512 PRESTO Programming Algorithm that drastically reduces programming time (typically less than seconds). Nevertheless achieve compatibility with programming equipments, PRESTO Programming Algorithm used well.
PRESTO programming algorithm
PRESTO Programming Algorithm allows whole array programmed with guaranteed margin, typical time seconds. This achieved with STMicroelectronics M27C512 several design innovations described M27C512 datasheet improve programming efficiency provide adequate margin reliability. Before starting programming internal MARGIN MODE circuit order guarantee that each cell programmed with enough margin. Then sequence 100µs program pulses applied each byte until correct verify occurs. overprogram pulses applied since verify MARGIN MODE provides necessary margin.
7/22
Device operation
M27C512
Program Inhibit
Programming multiple M27C512s parallel with different data also easily accomplished. Except like inputs including GVPP parallel M27C512 common. level pulse applied M27C512's input, with 12.75V, will program that M27C512. high level input inhibits other M27C512s from being programmed.
Program Verify
verify (read) should performed programmed bits determine that they were correctly programmed. verify accomplished with VIL. Data should verified with tELQV after falling edge
Electronic Signature
Electronic Signature (ES) mode allows reading binary code from EPROM that will identify manufacturer type. This mode intended programming equipment automatically match device programmed with corresponding programming algorithm. mode functional 25°C ambient temperature range that required when programming M27C512. activate mode, programming equipment must force 11.5V 12.5V address line M27C512. identifier bytes then sequenced from device outputs toggling address line from VIH. other address lines must held during Electronic Signature mode. Byte VIL) represents manufacturer code byte VIH) device identifier code. STMicroelectronics M27C512, these identifier bytes given <Blue>Table read-out outputs
8/22
M27C512
Erasure operation (applies EPROM)
Erasure operation (applies EPROM)
erasure characteristics M27C512 such that erasure begins when cells exposed light with wavelengths shorter than approximately 4000 should noted that sunlight some type fluorescent lamps have wavelengths 3000-4000 range. Research shows that constant exposure room level fluorescent lighting could erase typical M27C512 about years, while would take approximately week cause erasure when exposed direct sunlight. M27C512 exposed these types lighting conditions extended periods time, suggested that opaque labels over M27C512 window prevent unintentional erasure. recommended erasure procedure M27C512 exposure short wave ultraviolet light which wavelength 2537 integrated dose (i.e. intensity exposure time) erasure should minimum W-sec/cm2. erasure time with this dosage approximately minutes using ultraviolet lamp with 12000 µW/cm2 power rating. M27C512 should placed within inch) lamp tubes during erasure. Some lamps have filter their tubes which should removed before erasure.
9/22
Maximum rating
M27C512
Maximum rating
Stressing device outside ratings listed <Blue>Table cause permanent damage device. These stress ratings only, operation device these, other conditions outside those indicated Operating sections this specification, implied. Exposure Absolute Maximum Rating conditions extended periods affect device reliability. Refer also STMicroelectronics SURE Program other relevant quality documents. Table
Symbol TBIAS TSTG TLEAD
Absolute maximum ratings
Parameter Ambient Operating Temperature(1) Value (note 13.5 Unit
Temperature Under Bias Storage Temperature Lead Temperature during Soldering Input Output Voltage (except Supply Voltage Voltage Program Supply Voltage
VA9(2)
Depends range. Minimum voltage Input Output -0.5V with possible undershoot -2.0V period less than 20ns. Maximum voltage Output +0.5V with possible overshoot period less than 20ns.
10/22
M27C512
parameters
parameters
This section summarizes operating measurement conditions, characteristics device. parameters Characteristic tables that follow derived from tests performed under Measurement Conditions summarized relevant tables. Designers should check that operating conditions their circuit match measurement conditions when relying quoted parameters. Table measurement conditions
High Speed Input Rise Fall Times Input Pulse Voltages Input Output Timing Ref. Voltages 10ns 1.5V Standard 20ns 0.4V 2.4V 0.8V
Figure
Testing input/output waveform
High Speed 1.5V
Standard 2.4V 2.0V 0.8V
AI01822
0.4V
Figure
Testing Load Circuit
1.3V
1N914
3.3k DEVICE UNDER TEST
30pF High Speed 100pF Standard includes capacitance
AI01823B
11/22
parameters Table
Symbol COUT
M27C512
Capacitance
Parameter Input Capacitance Output Capacitance Test Condition(1)(2) VOUT Unit
25°C, 1MHz Sampled only, 100% tested.
Table
Symbol ICC1 ICC2 VIH(2)
Read mode characteristics
Parameter Input Leakage Current Output Leakage Current Supply Current Supply Current (Standby) Supply Current (Standby) CMOS Program Current Input Voltage Input High Voltage Output Voltage Output High Voltage Output High Voltage CMOS 2.1mA -1mA -100µA 0.7V Test Condition(1) VOUT VIL, VIL, IOUT 0mA, 5MHz 0.2V -0.3 Unit
must applied simultaneously with before removed simultaneously after VPP. Maximum voltage Output +0.5V.
12/22
M27C512 Table Read mode characteristics
parameters
M27C512 Symbol Parameter Test Condition(1) -45(2) tAVQV tELQV tGLQV tEHQZ(3) tGHQZ(3) tAXQX tACC Address Valid Output Valid Chip Enable Output Valid Output Enable Output Valid Chip Enable High Output Hi-Z Output Enable High Output Hi-Z Address Transition Output Transition VIL, VIL, Unit
must applied simultaneously with before removed simultaneously after VPP. Speed obtained with High Speed measurement conditions. Sampled only, 100% tested.
Table
Read mode characteristics
M27C512
Symbol
Parameter
Test Condition(1)
Unit
tAVQV tELQV tGLQV tEHQZ tGHQZ(2) tACC Address Valid Output Valid Chip Enable Output Valid Output Enable Output Valid Chip Enable High Output Hi-Z Output Enable High Output Address Transition Output Transition VIL,
tAXQX
VIL,
must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested.
13/22
parameters Figure Read mode waveforms
M27C512
A0-A15
VALID tAVQV tAXQX
VALID
tGLQV tELQV Q0-Q7 tGHQZ Hi-Z tEHQZ
AI00735B
Table
Symbol
Programming mode characteristics
Parameter Input Leakage Current Supply Current Program Current Input Voltage Input High Voltage Output Voltage Output High Voltage Voltage 2.1mA -1mA 11.5 12.5 -0.3 Test Condition(1)(2) Unit
6.25V 0.25V; 12.75V 0.25V must applied simultaneously with before removed simultaneously after VPP.
Table
Symbol tA9HVPH tVPHEL tA10HEH tA10LEH tEXA10X tEXVPX tVPXA9X
Margin Mode Characteristics
tAS9 tVPS tAS10 tAS10 tAH10 tVPH tAH9 Parameter High High High Chip Enable VA10 High Chip Enable High (Set) VA10 Chip Enable High (Reset) Chip Enable Transition VA10 Transition Chip Enable Transition Transition Transition Transition Test Condition(1)(2) Unit
6.25V 0.25V; 12.75V 0.25V must applied simultaneously with before removed simultaneously after VPP.
14/22
M27C512 Figure Margin mode waveforms
parameters
tA9HVPH GVPP tVPHEL tA10HEH tEXA10X tEXVPX tVPXA9X
Reset tA10LEH
AI00736B
High level High level 12V.
15/22
parameters Table
Symbol tAVEL tQVEL tVCHEL tVPHEL tVPLVPH tELEH tEHQX tEHVPX tVPLEL tELQV tEHQZ(3) tEHAX
M27C512
Programming mode characteristics
tVCS tOES tPRT tOEH tDFP Parameter Address Valid Chip Enable Input Valid Chip Enable High Chip Enable High Chip Enable Rise Time Chip Enable Program Pulse Width (Initial) Chip Enable High Input Transition Chip Enable High Transition Chip Enable Chip Enable Output Valid Chip Enable High Output Hi-Z Chip Enable High Address Transition Test Condition(1)(2) Unit
6.25V 0.25V; 12.75V 0.25V must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested.
Figure
A0-A15
Programming Verify modes waveforms
VALID tAVEL tEHAX DATA tQVEL tEHQX tELQV tVCHEL tEHVPX DATA tEHQZ
Q0-Q7
GVPP tVPHEL tELEH PROGRAM VERIFY
AI00737
tVPLEL
16/22
M27C512
Package mechanical
Package mechanical
Figure FDIP28W Ceramic Frit-seal DIP, with window, Package Outline
FDIPW-a
Drawing scale.
Table
Symbol
FDIP28W Ceramic Frit-seal DIP, with window, Package Mechanical Data
millimeters 5.72 0.51 3.91 3.89 0.41 1.45 0.23 36.50 33.02 15.24 13.06 2.54 14.99 16.18 3.18 1.52 7.11 1.40 4.57 4.50 0.56 0.30 37.34 13.36 18.03 4.10 2.49 0.280 0.100 0.590 1.300 0.600 0.057 0.020 0.154 0.153 0.016 0.009 1.437 0.514 0.637 0.125 0.060 inches 0.225 0.055 0.180 0.177 0.022 0.012 1.470 0.526 0.710 0.161 0.098
17/22
Package mechanical Figure PDIP28 Plastic DIP, mils width, Package Outline
M27C512
PDIP
Drawing scale.
Table
Symbol
PDIP28 Plastic DIP, mils width, Package Mechanical Data
millimeters 0.1750 0.0248 3.050 4.570 0.1500 0.0177 0.0500 0.230 36.830 33.020 15.240 13.720 2.540 15.000 12.700 14.800 15.200 3.300 1.78 2.08 14.480 15.200 16.680 0.1299 0.070 0.082 36.580 0.310 37.080 1.4500 1.3000 0.6000 0.5402 0.1000 0.5906 0.5000 0.5827 0.5984 0.5701 0.5984 0.6567 0.0091 1.4402 0.0122 1.4598 0.1201 0.1799 inches
4.445 0.630 3.810 0.450 1.270
18/22
M27C512 Figure PLCC32 lead Plastic Leaded Chip Carrier, Package Outline
Package mechanical
0.51 (.020) 1.14 (.045)
PLCC-A
Drawing scale.
Table
Symbol
PLCC32 lead Plastic Leaded Chip Carrier, Package Mechanical Data
millimeters 3.18 1.53 0.38 0.33 0.66 3.56 2.41 0.53 0.81 0.10 12.32 11.35 4.78 7.62 14.86 13.89 6.05 10.16 1.27 0.00 0.89 12.57 11.51 5.66 15.11 14.05 6.93 0.13 0.035 0.400 0.050 0.300 0.485 0.447 0.188 0.585 0.547 0.238 0.000 inches 0.125 0.060 0.015 0.013 0.026 0.140 0.095 0.021 0.032 0.004 0.495 0.453 0.223 0.595 0.553 0.273 0.005
19/22
Part numbering
M27C512
Part numbering
Table
Example: Device Type Supply Voltage Device Function Kbit (64Kb Speed ns(1) Tolerance blank Package FDIP28W PDIP28 PLCC32 Temperature Range
Ordering Information Scheme
M27C512
High Speed, Characteristics section further information.
list available options (speed, package, etc.) further information aspect this device, please contact your nearest Sales Office.
20/22
M27C512
Revision history
Revision history
Table
Date November 1998 25-Sep-2000 02-Apr-2001 29-Aug-2002 08-Nov-2004
Document revision history
Revision First Issue AN620 Reference removed FDIP28W mechanical dimensions changed (<Blue>Table 14.) Package mechanical data clarified PDIP28 (Table 15), PLCC32 (Table Figure TSOP28 (Table 16., Figure Details ECOPACK lead-free package options added. Additional Burn-in option removed ECOPACK lead-free text updated Section Description. TLEAD Note removed from Table Absolute maximum ratings. TSOP28 package removed. access times removed from whole document. Blank, Options removed from Table Ordering Information Scheme. Changes
18-May-2007
21/22
M27C512
Please Read Carefully:
Information this document provided solely connection with products. STMicroelectronics subsidiaries ("ST") reserve right make changes, corrections, modifications improvements, this document, products services described herein time, without notice. products sold pursuant ST's terms conditions sale. Purchasers solely responsible choice, selection products services described herein, assumes liability whatsoever relating choice, selection products services described herein. license, express implied, estoppel otherwise, intellectual property rights granted under this document. part this document refers third party products services shall deemed license grant such third party products services, intellectual property contained therein considered warranty covering manner whatsoever such third party products services intellectual property contained therein.
UNLESS OTHERWISE FORTH ST'S TERMS CONDITIONS SALE DISCLAIMS EXPRESS IMPLIED WARRANTY WITH RESPECT AND/OR SALE PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES MERCHANTABILITY, FITNESS PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER LAWS JURISDICTION), INFRINGEMENT PATENT, COPYRIGHT OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED WRITING AUTHORIZED REPRESENTATIVE, PRODUCTS RECOMMENDED, AUTHORIZED WARRANTED MILITARY, CRAFT, SPACE, LIFE SAVING, LIFE SUSTAINING APPLICATIONS, PRODUCTS SYSTEMS WHERE FAILURE MALFUNCTION RESULT PERSONAL INJURY, DEATH, SEVERE PROPERTY ENVIRONMENTAL DAMAGE. PRODUCTS WHICH SPECIFIED "AUTOMOTIVE GRADE" ONLY USED AUTOMOTIVE APPLICATIONS USER'S RISK.
Resale products with provisions different from statements and/or technical features forth this document shall immediately void warranty granted product service described herein shall create extend manner whatsoever, liability
logo trademarks registered trademarks various countries. Information this document supersedes replaces information previously supplied. logo registered trademark STMicroelectronics. other names property their respective owners.
2007 STMicroelectronics rights reserved STMicroelectronics group companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Switzerland United Kingdom United States America www.st.com
22/22

Kbit (64K EPROM EPROM supply voltage read operation Access time:

Top Searches for this datasheet

Other recent searches