Mbit (256Kb Voltage EPROM VOLTAGE READ OPERATION: 2.7V 3.6V FAST

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Mbit (256Kb Voltage EPROM VOLTAGE READ OPERATION: 2.7V 3.6V FAST

Datasheet Thumbnail

Top Searches for this datasheet

M27W402
Mbit (256Kb Voltage EPROM
VOLTAGE READ OPERATION: 2.7V 3.6V FAST READ ACCESS TIME: 80ns 3.0V 3.6V 100ns 2.7V 3.6V COMPATIBLE with M27C4002 POWER CONSUMPTION: 15µA Standby Current 15mA Active Current 5MHz PROGRAMMING TIME 100µs/byte (typical) HIGH RELIABILITY CMOS TECHNOLOGY 2,000V Protection 200mA Latchup Protection Immunity ELECTRONIC SIGNATURE Manufacturer Code: 0020h Device Code: 0044h
PLCC44
TSOP40
Figure Logic Diagram
DESCRIPTION M27W402 voltage Mbit EPROM offeredin range (one time programmable). ideally suited microprocessor systems requiring large data program storage organised 262,144 bits.
A0-A17
Q0-Q15
Table Signal Names
A0-A17 Q0-Q15 Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground
M27W402
AI01863
July 1998
1/12
M27W402
Figure Connections Figure TSOP Connections
DQ15 DQ14 DQ13 DQ12 DQ11 DQ10
M27W402
M27W402 (Normal)
AI01865
AI01866
Warning: Connected.
Table Absolute Maximum Ratings
Symbol TBIAS TSTG
Parameter Ambient Operating Temperature Temperature Under Bias Storage Temperature Input Output Voltages (except Supply Voltage Voltage Program Supply Voltage
Value 13.5
Unit
Notes: Except rating "Operating Temperature Range", stresses above those listed Table "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only operation device these other conditions above those indicated Operating sections this specification mplied. Exposure Absolute Maximum Rating conditions extended periods affect device reliability. Refer also STMicroelectronics SURE Program other relevant quality documents. 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. Depends range.
2/12
M27W402
Table Operating Modes
Mode Read Output Disable Program Verify Program Inhibit Standby Electronic Signature
Note: VIL, 0.5V
Pulse
Data Hi-Z Data Data Hi-Z Hi-Z Codes
Table Electronic Signature
Identifier Manufacturer's Code Device Code Data
Note: Outputs Q8-Q15 '0'.
DESCRIPTION (cont'd) M27W402 operates read mode with supply voltage 2.7V 85°C temperature range. decrease operating power allows either reduction size battery increase time between battery recharges. M27W402 offered both PLCC44 TSOP40 packages. DEVICE OPERATION operationg modes M27W402 listed Operating Modes table. single power supply required read mode. inputs levels except Electronic Signature. Read Mode M27W402 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) isequal delay from output(tELQV). Data available output after delay tGLQV from falling edge assuming that
been addresses have been stable least AVQV-tGLQV. Standby Mode M27W402 standbymode which reduces supply current from 15mA 15µA with voltage operation 3.6V, Read Mode Characteristics table details. M27W402 placed standby mode applying CMOS high signal input. When standby mode, outputs high impedance state, independent input. Line Output Control BecauseEPROMs 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 efficientuse thesetwo controllines, 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.
3/12
M27W402
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
Figure Testing Load Circuit
1.3V
High Speed 1.5V DEVICE UNDER TEST 2.0V 0.8V
AI01822
1N914
3.3k
Standard 2.4V
0.4V
30pF High Speed 100pF Standard includes capacitance
AI01823B
Table Capacitance
Symbol Parameter Input Capacitance Output Capacitance Test Condition VOUT Unit
Note: Sampled only, 100% tested.
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 output capacitive inductive loading device. associated transient voltage peaks suppressed complying with line output
4/12
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.
M27W402
Table Read Mode Characteristics 2.7V 3.6V; VCC)
Symbol Parameter Input Leakage Current Output Leakage Current Test Condition VOUT VIL, VIL, IOUT 0mA, 5MHz, 3.6V Supply Current (Standby) Supply Current (Standby) CMOS Program Current Input Voltage Input High Voltage Output Voltage Output High Voltage 2.1mA -400µA 0.2V, 3.6V -0.6 Unit
ICC1 ICC2
Notes: must applied simultaneously with before removed simultaneously after VPP. Maximum voltage Output +0.5V.
Table Read Mode Characteristics 2.7V 3.6V; VCC)
M27W402 Symbol Parameter Test Condition -100 -120 (-150/-200) Unit
3.0V 3.6V 2.7V 3.6V 2.7V 3.6V tAVQV tELQV tGLQV tEHQZ tGHQZ
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,
tAXQX
Notes: must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested. Speed obtained with High Speed measurement conditions.
5/12
M27W402
Figure Read Mode Waveforms
A0-A17
VALID tAVQV tAXQX
VALID
tGLQV tELQV Q0-Q15 tGHQZ Hi-Z tEHQZ
AI00731B
Table Programming Mode Characteristics 6.25V 0.25V; 12.75V 0.25V)
Symbol Parameter Input Leakage Current Supply Current Program Current Input Voltage Input High Voltage Output Voltage Output High Voltage Voltage 2.1mA -400µA 11.5 12.5 -0.3 Test Condition Unit
Note: must applied simultaneously with before removed simultaneously after VPP.
6/12
M27W402
Table Programming Mode Characteristics 6.25V 0.25V; 12.75V 0.25V)
Symbol tAVEL tQVEL tVPHEL tVCHEL tELEH tEHQX tQXGL tGLQV tGHQZ tGHAX tVPS tVCS tOES tDFP Parameter Address Valid Chip Enable Input Valid Chip Enable High Chip Enable High Chip Enable Chip Enable Program Pulse Width Chip Enable High Input Transition Input Transition Output Enable Output Enable Output Valid Output Enable High Output Hi-Z Output Enable High Address Transition Test Condition Unit
Notes: must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested.
Figure Programming Verify Modes Waveforms
A0-A17 tAVEL Q0-Q15 DATA tQVEL tVPHEL tVCHEL tELEH
VALID
DATA tEHQX
tGLQV
tGHQZ
tGHAX
tQXGL
PROGRAM
VERIFY
AI00730
7/12
M27W402
Figure Programming Flowchart ming with PRESTO consists applying sequence 100µs program pulses each byte until correct verify occurs (see Figure During programming verify operation, MARGIN MODE circuit automaticallyactivated order guarantee that each cell programmed with enough margin. overprogrampulse applied since verify MARGIN MODE much higher than 3.6V, provides necessary margin each programmed cell. Program Inhibit Programming multiple M27W402s parallel with different data also easily accomplished. Except like inputs including parallel M27W402 common. level pulse applied M27W402's input, with 12.75V,will program that M27W402. high level input inhibits other M27W402s from being programmed. Program Verify verify (read) should performed programmed bits determine that they were correctly programmed. verify accomplished with VIL, VIH, 12.75V 6.25V. On-Board Programming M27W402 directly programmed application circuit. relevant Application Note AN620. 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 correspondingprogramming algorithm. mode functional 25°C ambient temperature range that required when programming M27W402. activate mode, programming equipmentmust force 11.5Vto 12.5V address line M27W402 with VPP=VCC=5V. identifier bytes then sequenced from device outputs toggling address line from VIH. other address lines must held during Electronic Signature mode. Byte (A0=VIL) represents manufacturer code byte (A0=VIH) device identifier code. STMicroelectronics M27W402, these identifier bytes given Table read-out outputs Note that M27W402 M27C4002 have same identifier bytes.
6.25V, 12.75V
100µs Pulse VERIFY Last Addr Addr
FAIL
CHECK WORDS 1st: 2nd: 4.2V
AI00726C
Programming M27W402 been designed fully compatible with M27C4002 same electronic signature.As result M27W402 programmed M27C4002 same programming equipment applying 12.75V 6.25V same PRESTO algorithm. When delivered, bits M27W402 state. Data introduced selectively programming '0's into desired locations. Although only '0's will programmed,both '1's '0's present data word. M27W402 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. PRESTO Programming Algorithm PRESTO Programming Algorithm allows whole array programmed with guaranteed margin, typical time 26.5 seconds.Program-
8/12
M27W402
ORDERING INFORMATION SCHEME Example: M27W402 -100
Speed -100 (1,2) -120
Package PLCC44 TSOP40 20mm
Temperature Range
Option Tape Reel Packing
DESIGN -150 -200
Notes: High Speed, Characteristics section further information. This speed also guarantees 80ns access time 3.0V 3.6V. These speeds replaced 120ns.
list available options (Speed, Package etc.) further information aspect this device, please contact STMicroelectronics Sales Office nearest you.
9/12
M27W402
PLCC44 lead Plastic Leaded Chip Carrier, square
Symb 0.89 1.27 4.20 2.29 0.33 0.66 17.40 16.51 14.99 17.40 16.51 14.99 0.00 0.10 4.70 3.04 0.51 0.53 0.81 17.65 16.66 16.00 17.65 16.66 16.00 0.25 0.035 0.050 inches 0.165 0.090 0.013 0.026 0.685 0.650 0.590 0.685 0.650 0.590 0.000 0.004 0.185 0.120 0.020 0.021 0.032 0.695 0.656 0.630 0.695 0.656 0.630 0.010
0.51 (.020)
D2/E2
1.14 (.045)
PLCC
Drawing scale.
10/12
M27W402
TSOP40 lead Plastic Thin Small Outline, 20mm
Symb 0.50 0.05 0.95 0.17 0.10 19.80 18.30 9.90 0.50 0.10 1.20 0.15 1.05 0.27 0.21 20.20 18.50 10.10 0.70 0.020 0.002 0.037 0.007 0.004 0.780 0.720 0.390 0.020 0.004 inches 0.047 0.006 0.041 0.011 0.008 0.795 0.728 0.398 0.028
TSOP-a
Drawing scale.
11/12
M27W402
Information furnished believed accurate reliable. However, STMicroelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights STMicroelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. STMicroelectronics products authorized critical components life support devices systems without express written approval STMicroelectronics. logo registered trademark STMicroelectronics 1998 STMicroelectronics Rights Reserved STMicroelectronics GROUP COMPANIES Australia Brazil Canada China France Germany Italy Japan Korea Malaysia Malta Mexico Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A.
12/12

Mbit (256Kb Voltage EPROM VOLTAGE READ OPERATION: 2.7V 3.6V FAST

Top Searches for this datasheet

Other recent searches