Kbit (64Kb Voltage EPROM VOLTAGE READ OPERATION: 2.7V 3.6V FAST R
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M27W512
Kbit (64Kb Voltage EPROM
VOLTAGE READ OPERATION: 2.7V 3.6V FAST READ ACCESS TIME: 90ns 3.0V 3.6V 100ns 2.7V 3.6V COMPATIBLE with M27C512 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: Device Code: DESCRIPTION M27W512 voltage Kbit EPROM offered range (one time programmable). ideally suited microprocessor systems organized 65,536 bits. M27W512 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. M27W512 offered PLCC32 TSOP28 13.4 packages. Table Signal Names
A0-A15 Q0-Q7 GVPP Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground
PLCC32
TSOP28 13.4mm
Figure Logic Diagram
A0-A15
Q0-Q7
GVPP
M27W512
AI01584
September 1998
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M27W512
Figure Connections Figure TSOP Connections
GVPP
M27W512
GVPP
M27W512
AI01586
AI01585
Warning: Connected, Don't
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 implied. 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.
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M27W512
Table Operating Modes
Mode Read Output Disable Program Program Inhibit Standby Electronic Signature
Note: VIL, 0.5V
Pulse
GVPP
Data Hi-Z Data Hi-Z Hi-Z Codes
Table Electronic Signature
Identifier Manufacturer's Code Device Code Data
DEVICE OPERATION modes operations M27W512 listed Operating Modes table. single power supply required read mode. inputs levels except GVPP Electronic Signature. Read Mode M27W512 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 M27W512 standby mode which reduces supply current from 15mA 15µA with voltage operation 3.6V, Read Mode
Characteristics table details. M27W512 placed standby mode applying CMOS high signal input. When standby mode, outputs high impedance state, independent GVPP input. 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.
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M27W512
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 3.3k 1N914
Standard 2.4V 2.0V 0.8V
AI01822
0.4V
30pF High Speed 100pF Standard includes capacitance
AI01823B
Table Capacitance
Symbol COUT 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 capacitive inductive loading device output. associated transient voltage peaks suppressed complying with line output
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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 supplyconnection point.The purpose bulk capacitor overcome voltage drop caused inductive effects traces.
M27W512
Table Read Mode Characteristics 85°C; 2.7V 3.6V; VCC)
Symbol 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 2.1mA -1mA Test Condition VOUT VIL, VIL, IOUT 0mA, 5MHz, 3.6V 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 85°C; 2.7V 3.6V; VCC)
M27W512 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 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,
Notes: must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested. Speed obtained with High Speed measurement conditions.
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M27W512
Figure Read Mode Waveforms
A0-A15
VALID tAVQV tAXQX
VALID
tGLQV tELQV Q0-Q7 tGHQZ Hi-Z tEHQZ
AI00735B
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 -1mA 11.5 12.5 -0.3 Test Condition Unit
Note: must applied simultaneously with before removed simultaneously after VPP.
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M27W512
Table MARGIN MODE Characteristics 6.25V 0.25V; 12.75V 0.25V)
Symbol tA9HVPH tVPHEL tA10HEH tA10LEH tEXA10X tEXVPX tVPXA9X 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 Unit
Note: must applied simultaneously with before removed simultaneously after VPP.
Figure MARGIN MODE Waveforms
tA9HVPH GVPP tVPHEL tA10HEH tEXA10X tEXVPX tVPXA9X
Reset tA10LEH
AI00736B
Note: High level High level 12V.
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M27W512
Table Programming Mode Characteristics 6.25V 0.25V; 12.75V 0.25V)
Symbol tAVEL tQVEL tVCHEL tVPHEL tVPLVPH tELEH tEHQX tEHVPX tVPLEL tELQV tEHQZ
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
Unit
tEHAX
Notes: must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested.
Figure Programming Verify Modes Waveforms
A0-A15 tAVEL Q0-Q7 tQVEL tVCHEL GVPP tVPHEL tELEH PROGRAM DATA
VALID tEHAX DATA tEHQX tELQV tEHVPX tEHQZ
tVPLEL
VERIFY
AI00737
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M27W512
Programming M27W512 been designed fully compatible with M27C512 same electronic signature. result M27W512 programmed M27C512 same programming equipment applying 12.75V 6.25V VCC. M27W512 PRESTO Programming Algorithm that drastically reduces programming time. Nevertheless achieve compatibility with programming equipments, PRESTO Programming Algorithm used well. When delivered, bits M27W512 state. Data introduced selectively programming '0's into desired locations. Although only '0's will programmed, both '1's '0's present data word. M27W512 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 seconds. This achieved with STMicroelectronics M27W512 several design innovations described M27W512 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 much higher than 3.6V, provides necessary margin. Program Inhibit Programming multiple M27W512s parallel with different data also easily accomplished. Except like inputs including GVPP parallel M27W512 common. level pulse applied M27W512's input, with 12.75V, will program that M27W512. high level input inhibits other M27W512s 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 Figure Programming Flowchart
6.25V, 12.75V MARGIN MODE
100µs Pulse VERIFY Last Addr Addr
FAIL
RESET MARGIN MODE CHECK BYTES 1st: 2nd: 4.2V
AI00738B
On-Board Programming M27W512 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 corresponding programming algorithm. mode functional 25°C ambient temperature range that required when programming M27W512. activate mode, programming equipment must force 11.5V 12.5V address line M27W512. 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 M27W512, these identifier bytes given Table read-out outputs Note that M27W512 M27C512 have same identifier byte.
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M27W512
ORDERING INFORMATION SCHEME Example: M27W512 -100
Speed -100 (1,2) -120
Package PLCC32 TSOP28 13.4mm
Temperature Range
Option Tape Reel Packing
DESIGN -150 -200
Notes: High Speed, Characteristics section further information. This speed also guarantees 90ns 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.
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M27W512
PLCC32 lead Plastic Leaded Chip Carrier, rectangular
Symb 0.89 1.27 2.54 1.52 0.33 0.66 12.32 11.35 9.91 14.86 13.89 12.45 0.00 0.10 3.56 2.41 0.38 0.53 0.81 12.57 11.56 10.92 15.11 14.10 13.46 0.25 0.035 0.050 inches 0.100 0.060 0.013 0.026 0.485 0.447 0.390 0.585 0.547 0.490 0.000 0.004 0.140 0.095 0.015 0.021 0.032 0.495 0.455 0.430 0.595 0.555 0.530 0.010
0.51 (.020)
D2/E2
1.14 (.045)
PLCC
Drawing scale
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M27W512
TSOP28 lead Plastic Thin Small Outline, 13.4mm
Symb 0.55 0.95 0.17 0.10 13.20 11.70 7.90 0.50 0.10 1.25 0.20 1.15 0.27 0.21 13.60 11.90 8.10 0.70 0.022 0.037 0.007 0.004 0.520 0.461 0.311 0.020 0.004 inches 0.049 0.008 0.045 0.011 0.008 0.535 0.469 0.319 0.028
TSOP-c
Drawing scale
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M27W512
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.
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