VERY VOLTAGE 512K (64K VERY VOLTAGE READ OPERATION: 2.7V 5.5V ACC

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VERY VOLTAGE 512K (64K VERY VOLTAGE READ OPERATION: 2.7V 5.5V ACC

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M27W512
VERY VOLTAGE 512K (64K
VERY VOLTAGE READ OPERATION: 2.7V 5.5V ACCESS TIME: 150ns 200ns POWER "CMOS" CONSUMPTION: Active Current 10mA Standby Current 10µA PROGRAMMING VOLTAGE: 12.75V PROGRAMMING TIMES AROUND 6sec. (PRESTO ALGORITHM) M27W512 PROGRAMMABLE M27C512 with IDENTICAL SIGNATURE DESCRIPTION M27W512 very voltage, power 512K Time Programmable ideally suited handheld portable microprocessor systems requiring large programs. organized 524,288 bits. M27W512 operates read mode with supply voltage 2.7V temperature range. decrease operating power allows either reduction size battery increase time between battery recharges. M27W512 also operated standard EPROM (similar M27C512) with power supply. equipment requiring surface monted, profile package, M27W512 offered Plastic Leaded Chip Carrier Plastic Thin Small Outline packages. Table Signal Names
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
March 1995
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M27W512
Figure Connections
Figure TSOP Connections
GVPP
M27W512
GVPP
M27W512
AI01586
AI01585
Warning: Connected, Don't Use.
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 SGS-THOMSON 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.
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, inde-
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M27W512
DEVICE OPERATION (Cont'd) pendent 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 tAVQV-tGLQV. Standby Mode M27W512 standby mode which reduces active current from 10mA 10µA with voltage operation 2.7V (30mA 100µA with supply 5.5V), 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 BecauseOTP ROMs often 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 ROMs 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 locat supplyconnection point.The purpose bulk capacitor overcome voltage drop caused inductive effects traces.
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
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M27W512
MEASUREMENT CONDITIONS
Input Rise Fall Times Input Pulse Voltages Input Output Timing Ref. Voltages 20ns 2.4V 2.0V
Figure Testing Load Circuit
1.3V
1N914
Note that Output Hi-Z defined point where data longer driven.
3.3k
Figure Testing Input Output Waveforms
DEVICE UNDER TEST 2.0V 0.8V
AI00826
100pF
2.4V
0.4V
includes capacitance
AI00828
Table Capacitance
Symbol Parameter Input Capacitance Output Capacitance Test Condition VOUT Unit
Note: Sampled only, 100% tested.
Table Read Mode Characteristics 2.7V 5.5V unless specified; VCC)
Symbol Parameter Input Leakage Current Output Leakage Current Test Condition VOUT VIL, VIL, IOUT 0mA, 5MHz, 2.7V VIL, VIL, IOUT 0mA, 5MHz, 5.5V ICC1 ICC2
Unit
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
0.2V, 2.7V 0.2V, 5.5V -0.3 2.1mA -400µA -100µA 0.7V
Notes: must applied simultaneously with before removed simultaneously after VPP. Maximum voltage Output +0.5V.
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M27W512
Table Read Mode Characteristics 2.7V 5.5V unless specified; VCC)
M27W512 Symbol Parameter Test Condition tAVQV tELQV tGLQV tEHQZ tGHQZ
-150
-200
Unit
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.
Figure Read Mode Waveforms
A0-A15 tAVQV tGLQV tELQV Q0-Q7
VALID tAXQX
tEHQZ
tGHQZ Hi-Z DATA
AI00735
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M27W512
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
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
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
Units
tEHAX
Notes: must applied simultaneously with before removed simultaneously after VPP. Sampled only, 100% tested.
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M27W512
Figure MARGIN MODE Waveforms
tA9HVPH GVPP tVPHEL tA10HEH tEXA10X tEXVPX tVPXA9X
Reset tA10LEH
AI00736B
Note: High level High level 12V.
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
Figure Programming Flowchart
PRESTO Programming Algorithm PRESTO Programming Algorithm allows whole array programmed with guaranteed margin, typical time seconds. This achieved with SGS-THOMSON M27W512 several design innovations 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. 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
AI00738B
6.25V, 12.75V MARGIN MODE
100µs Pulse VERIFY Last Addr Addr
FAIL
RESET MARGIN MODE CHECK BYTES 1st: 2nd: 4.2V
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 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. This mode functional 25°C ambient temperature range that required when programming M27W512. activate this mode, programming equipment must apply Supply Voltage 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. SGS-THOMSON M27W512, these identifier bytes given Table read-out outputs Note that M27W512 M27C512 have same identifier bytes.
Programming M27W512 been designed fully compatible with M27C512. result M27W512 programmed M27W512 same programmers applying 12.75V 6.25V VCC. M27W512 same electronic signature uses same PRESTO algorithm. When delivered, bits M27W512 state. Data introduced selectively programming "0s" into desired locations. Although only "0s" will programmed, both "1s" "0s" present data word. M27W512 programming mode when input 12.75V TTL-low. data programmed applied bits parallel data output pins. levels required address data inputs TTL. specified 6.25V 0.25V. M27W512 uses PRESTO Programming Algorithm that drastically reduces programming time (typically less than seconds). Nevertheless achieve compatibility with programming equipments, PRESTO Programming Algorithm used well.
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M27W512
ORDERING INFORMATION SCHEME Example: M27W512 -150
Speed -150 -200
Package PLCC32 TSOP28 13.4mm
Temperature Range
Option Tape Reel Packing
list available options (Speed, Package, Temperature Range, etc.) refer current Memory Shortform catalogue. further information aspect this device, please contact SGS-THOMSON Sales Office nearest you.
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M27W512
PLCC32 lead Plastic Leaded Chip Carrier, rectangular
Symb
PLCC32
2.54 1.52 0.33 0.66 12.32 11.35 9.91 14.86 13.89 12.45 1.27 0.10 3.56 2.41 0.53 0.81 12.57 11.56 10.92 15.11 14.10 13.46 0.050
inches 0.100 0.060 0.013 0.026 0.485 0.447 0.390 0.585 0.547 0.490 0.004 0.140 0.095 0.021 0.032 0.495 0.455 0.430 0.595 0.555 0.530
D2/E2
PLCC
Drawing scale
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M27W512
TSOP28 lead Plastic Thin Small Outline, 13.4mm
Symb
TSOP28
1.25 0.20 0.95 0.17 0.10 13.20 11.70 7.90 0.55 0.50 0.10 1.15 0.27 0.21 13.60 11.90 8.10 0.70 0.022
inches 0.049 0.008 0.037 0.007 0.004 0.520 0.461 0.311 0.020 0.004 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, SGS-THOMSON Microelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights SGS-THOMSON Microelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. SGS-THOMSON Microelectronics products authorized critical components life support devices systems without express written approval SGS-THOMSON Microelectronics. 1995 SGS-THOMSON Microelectronics Rights Reserved
SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil China France Germany Hong Kong Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A.
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VERY VOLTAGE 512K (64K VERY VOLTAGE READ OPERATION: 2.7V 5.5V ACC

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