GM76C8128CL/CLL 131,072 WORDS CMOS STATIC Configuration
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GM76C8128CL/CLL 1,048,576 bits static random access memory organized 131,072 words bits. Using 0.6um advanced CMOS technology provides high speed operation with minimum cycle time 55/70/85ns. device placed power standby mode with /CS1 high output enable (/OE) allows fast memory access. Thus suitable high speed power applications, especially where battery back-up required.
GM76C8128CL/CLL
131,072 WORDS
CMOS STATIC Configuration
I/O0 I/O1 I/O2
/CS1 I/O7 I/O6 I/O5 I/O4 I/O3
Features
Fast Speed 55/70/85ns Power Standby Power Operation Standby 0.275mW Max. 85C(LLE/LLI) 0.55mW Max. 85C(LE/LI) 0.11mW Max. 70C(LL) 0.55mW Max. 70C(L) Operation 385mW (Max) Completely Static Clock Timing Strobe Required Equal Access Cycle Time compatible inputs outputs Capability Battery Back-up Operation Single 5V+/-10% Operation Standard DIP, TSOP-I,STSOP-I Temperature Range GM76C8128C Extended (-25 85C) GM76C8128C-E Industrial (-40 85C) GM76C8128C-I
(Top View) Block Diagram
Address Buffer
1024 Decoder
MEMORY CELL ARRAY 1024 (128K
A0-A16 /CS1, I/O0-I/O7 Function Address Inputs Write Enable Input Chip Select Input Output Enable Input Data Inputs/Outputs
/CS1
Decorder
Column Select
/CS1, Chip Control
/OE, Chip Control
Power Supply (4.5V ~5.5V) Ground
Buffer
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
Connection
GM76C8128CL/CLL
Absolute Maximum Ratings*
Symbol Parameter GM76C8128C
Ambient Temperature under Bias
Rating
260, lead) -0.3 -0.3 -0.5
Unit
GM76C8128C-E GM76C8128C-I
TSTG TSOL VI/O
Storage Temperature Soldering Temperature Time Supply Voltage Input Voltage Input Output Voltage Power Dissipation
Stresses greater than those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation device these other conditions above those indicated operating sections this specification implied. Exposure absolute maximum rating conditions extended periods affect reliability.
Recommended Operating Conditions 85C)
Symbol Parameter
Supply Voltage Input High Voltage Input Voltage
-0.3*
Unit
*Note :VIL(min) -3.0V 10ns pulse
Truth Table
/CS1
Stable Stable Stable
DATA
Output Data Input Data Hi-Z Hi-Z Hi-Z
MODE
Read Write Output Disable Standby
*Note: means don't care
Capacitance 1MHZ, 25C)
Symbol
CI/O
Parameter
Input Capacitance Output Capacitance
Test Conditions
Unit
*Note: This parameter sampled 100% tested.
GM76C8128CL/CLL
Operating Characteristics (VCC 5V+/-10%, 85C)
Symbol Parameter
Input Leakage Current Output Leakage Current High Level Output Voltage Level Output Voltage Operating Supply Current
Conditions
/CS1 VIH, <=VOUT<=VCC -1.0mA 2.1mA /CS1 VIH/VIL, IOUT /CS1 VIH/VIL IOUT tcycle Min, cycle
*Typ
Unit
II(L) IO(L) ICC1
Average Operating Current
ICC2
/CS1 0.2V, VCC-0.2V 0.2V/0.2V IOUT tcycle Standby Current(TTL) Standby GM76C8128C Current(CMOS) GM76C8128C-E GM76C8128C-I /CS1 VIH, Version /CS1 VCC-0.2V Version 0.2V Version Version
ICCS1 ICCS2
*Typ. Values measured
Operating Characteristics Test Conditions (VCC 5V+/-10%, 85C, unless otherwise noted.)
Parameter
Input Pulse Level Input Rise Fall Time Input Output Timing Reference Levels Output Load
Value
0.6V 2.4V 1.5V below
Output Load
DOUT
Output Load (for tCHZ, tCLZ, tWHZ, tOW, tOLZ tOHZ)
DOUT
GM76C8128CL/CLL
Operating Characteristics (VCC 5V+/-10%, 85C) Read Cycle
GM76C8128C-55 GM76C8128C-70 GM76C8128C-85
Symbol
Parameter
Read Cycle Time Address Access Time Chip Select Access Time Chip Select Access Time Output Enable Access Time Chip Select Output Setup Time Chip Select Output Floating Chip Select Output Setup Time Chip Select Output Floating Output Enable Output Setup Time Output Enable Output Floating Output Hold Time
Unit
tACS1 tACS2 tCLZ1 tCHZ1 tCLZ2 tCHZ2 tOLZ tOHZ
Write Cycle
GM76C8128C-55 GM76C8128C-70 GM76C8128C-85
Symbol
Parameter
Write Cycle Time Chip Select Time Chip Select Time Address Enable Time Address Setup Time Write Pulse Width Address Hold Time Input Data Setup Time Input Data Hold Time Write Output High-Z Output Active from Write
Unit
tCW1 tCW2 tWHZ
GM76C8128CL/CLL
Timing Waveforms Read Cycle (Note
tACS1
/CS1
tCLZ1 tACS2
tCHZ1
tCLZ2 tOLZ
tCHZ2
tOHZ
DOUT
High-Z
VALID DATA
GM76C8128CL/CLL
Write Cycle (/WE Controlled) (Notes
tCW1
/CS1
tCW2
tWHZ
DOUT
VALID DATA
GM76C8128CL/CLL
Write Cycle (/CS1 Controlled) (Notes
tCW1
/CS1
tCW2
tWHZ tCLZ
DOUT
VALID DATA
GM76C8128CL/CLL
Write Cycle (CS2 Controlled) (Notes
tCW2
tCW1
/CS1
tWHZ tCLZ
DOUT
VALID DATA
Notes: High Read Cycle. Assuming that /CS1 transition High transition occurs coincident with after transition. Outputs remain high impedance state. Assuming that /CS1 High transition transition occurs coincident with prior High transition. Outputs remain high impedance state. Assuming that high write cycle. Outputs high impedance state during this period.
GM76C8128CL/CLL
Data Retention Characteristics
Symbol VCCR ICCR Parameter
Data Retention Supply Voltage Data Retention Current GM76C8128C GM76C8128C-E GM76C8128C-I VCC=3.0V Version Version Version Version
tRC**
Unit
tCDR
Chip Select Data Retention Time Operation Recovery Time
Read Cycle
Data Retention Mode: /CS1 Controlled
tCDR
4.5V Data Retention Mode
2.2V VCCR1 /CS1>= VCCR 0.2V
/CS1
Data Retention Mode: Controlled
tCDR
4.5V Data Retention Mode
VCCR2 0.2V 0.4V
Notes: Data Retention Mode, controls Address, /WE, /CS1, buffer. controls data retention mode, these inputs high impedance state. /CS1 controls data retention mode, must satisfy either VCCR 0.2V CS2<=0.2V. other input levels (Address, /WE, /OE, I/O) high impedance state.
GM76C8128CL/CLL Package Dimensions
1.645(41.78) 1.665(42.29)
Unit: Inches (mm)
0.600(15.24) 0.625(15.88)
0.045(1.14) 0.055(1.40)
0.008(0.200) 0.015(0.380) 0.15(3.81) 0.165(4.191) 0.190(4.83)
0.016(0.41) 0.020(0.51)
0.100(2.54)
0.015(0.38)
0.125(3.18) 0.135(3.43)
0.02(0.53) 0.04(1.04)
0.435(11.05) 0.445(11.30)
0.004(0.10) 0.010(0.254) 0.799(20.30) 0.815(20.70)
0.086(2.18) 0.090(2.29)
0.014(0.35) 0.020(0.50)
0.050(1.27)
0.004(0.102) 0.010(0.254)
0.55(14.05) 0.57(14.40)
0.600(15.240)
0.540(13.72)
GM76C8128CL/CLL
TSOP (8x20mm)
0.313(7.95) 0.327(8.30)
/CS1 I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
0.720(18.30) 0.728(18.50)
0.006(0.15) 0.000(0.00)
0.780(19.80) 0.795(20.20) 0.039(1.0) 0.047(1.2) 0.016(0.40) 0.024(0.60)
32Small TSOP-I(8x13.4mm)
0.311(7.95) 0.320(8.2)
/CS1 I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
0.461(11.70) 0.467(11.86)
0.002(0.05) 0.006(0.15)
0.527(13.30) 0.528(13.50) 0.035(1.2) 0.044(1.0) 0.020(0.6) 0.019(0.4)
0.006(0.15) 0.009(0.25)
0.020(0.5)
0.006(0.15) 0.010(0.25)
0.020(0.50)
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