Mbit (1Mb Voltage EPROM VOLTAGE READ OPERATION: 2.7V 3.6V FAST AC
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M27W801
Mbit (1Mb Voltage EPROM
VOLTAGE READ OPERATION: 2.7V 3.6V FAST ACCESS TIME: 70ns 3.0V 3.6V 80ns 2.7V 3.6V POWER CONSUMPTION: Active Current 15mA Standby Current 20µA PROGRAMMING VOLTAGE: 12.75V 0.25V PROGRAMMING TIMES AROUND 52sec. (PRESTO ALGORITHM) ELECTRONIC SIGNATURE Manufacturer Code: Device Code:
PLCC32
TSOP32 20mm
Figure Logic Diagram DESCRIPTION M27W801 voltage Mbit EPROM offered ranges (one time programmable). ideally suited microprocessor systems requiring large data program storage organized 1,048,576 bits. M27W801 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. M27W801 offered PLCC32 TSOP32 packages.
A0-A19
Q0-Q7
GVPP
M27W801
Table Signal Names
A0-A19 Q0-Q7 GVPP Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground
AI02363
April 1998
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M27W801
Figure PLCC Connections Figure TSOP Connections
GVPP
M27W801
AI02365
M27W801 (Normal)
AI02366
GVPP
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 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. Depends range.
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M27W801
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 operating modes M27W801 listed Operating Modes table. single power supply required read mode. inputs levels except GVPP Electronic Signature Margin Mode Reset Read Mode M27W801 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 M27W801 standbymode which reduces supply current from 15mA 20µA with voltage operation 3.6V, Read Mode
Characteristics table details. M27W801 placed standby mode applying CMOS high signal input. When standby mode, outputs high impedance state, independent GVPP 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.
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M27W801
Table Measurement Conditions
High Speed Input Rise Fall Times Input Pulse Voltages Input Output Timing Ref. Voltages 10ns 1.5V Standard 20ns (10% 90%) 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 capacitiveand inductiveloading deviceat 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. purpose bulk capacitor overcome voltage drop caused inductive effects traces.
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M27W801
Table Read Mode Characteristics 2.7V 3.6V; VCC)
Symbol ICC1 ICC2
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
Test Condition VOUT VIL, GVPP VIL, IOUT 0mA, 5MHz 3.6V 0.2V 3.6V
Unit
-0.6 2.1mA -1mA
Notes: must applied simultaneously with before removed simultaneously after VPP. Maximum voltage Output +0.5V.
Table Read Mode Characteristics 2.7V 3.6V; VCC)
M27W801 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.
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M27W801
Figure Read Mode Waveforms
A0-A19
VALID tAVQV tAXQX
VALID
tGLQV tELQV Q0-Q7 tGHQZ Hi-Z tEHQZ
AI01583B
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.
Programming M27W801 been designed fully compatible with M27C801. result M27W801 programmed M27C801 same programmers applying 12.75V 6.25V VCC. M27W801 same electronic signature uses same PRESTO algorithm. When delivered, bits M27W801 state. Data introduced selectively programming "0"s into desired locations. Although only will programmed, both present data word. TheM27W801
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. M27W801 PRESTO IIBProgramming Algorithmthat drastically reduces programming time (typically seconds). Nevertheless achieve compatibility with programming equipments, PRESTO Programming Algorithm used.
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M27W801
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 tVPHEL tA10HEH tEXA10X tEXVPX tVPXA9X
Reset tA10LEH
AI00736B
Note: High level High level 12V.
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M27W801
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-A19 tAVEL Q0-Q7 tQVEL tVCHEL GVPP tVPHEL DATA
VALID tEHAX DATA tEHQX tEHQZ
tEHVPX
tELQV
tVPLEL
tELEH
PROGRAM
VERIFY
AI01270
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M27W801
PRESTO Programming Algorithm PRESTO Programming Algorithm allows whole array programmed with guaranteed margin, typical time 52.5 seconds. This achieved with SGS-THOMSON M27W801 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 sequenceof 50µs 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 M27W801s parallel with different data also easily accomplished. Except like inputs including GVPP parallel M27W801 common. level pulse applied M27W801's input, with 12.75V,will program that M27W801. high level input inhibits other M27W801s 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 ELQV after falling edge On-Board Programming M27W801 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 programFigure Programming Flowchart
6.25V, 12.75V
100µs Pulse VERIFY Last Addr Addr
FAIL
CHECK BYTES 1st: 2nd: 2.7V
AI02362
ming M27W801. activate mode, programming equipmentmust force 11.5Vto 12.5V address line M27W801. 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 M27W801, these identifier bytes given Table read-out outputs Note that M27W801 M27C801 have same identifier byte.
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M27W801
ORDERING INFORMATION SCHEME Example: M27W801
Speed (1,2) -100 DESIGN -120 -150 -200
Package TSOP32 20mm PLCC32
Temperature Range
Option Tape Reel Packing
Notes: High Speed, Characteristics section further information. This speed also guarantees 70ns access time 3.0V 3.6V These speeds replaced 100ns.
list available options (Speed, Package, etc.) further informationon aspect this device, please contact SGS-THOMSON Sales Office nearest you.
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M27W801
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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M27W801
TSOP32 lead Plastic Thin Small Outline, 20mm
Symb 0.50 0.05 0.95 0.15 0.10 19.80 18.30 7.90 0.50 0.10 1.20 0.17 1.05 0.27 0.21 20.20 18.50 8.10 0.70 0.020 0.002 0.037 0.006 0.004 0.780 0.720 0.311 0.020 0.004 inches 0.047 0.006 0.041 0.011 0.008 0.795 0.728 0.319 0.028
TSOP-a
Drawing scale.
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M27W801
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. 1998 SGS-THOMSON Microelectronics Rights Reserved
SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil Canada China France Germany Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A.
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