GM76C256CW Series
Rev 02 / Apr. 2001 3
DC CHARACTERISTICS
Vcc = 3V ±10%,5V ±10%, TA = 0°C to 70°C, unless otherwise specified.
Vcc = 3V
¡¾
10% Vcc = 5V
¡¾
10%
Symbol
Parameter Test Condition Min
Typ
Max
Min
Typ
Max
Unit
ILI Input Leakage Current Vss < VIN < Vcc -1 - 1 -1 - 1 uA
ILO Output Leakage Current
Vss < VOUT < Vcc,
/CS = VIH or
/OE = VIH or /WE = VIL
-1 - 1 -1 - 1 uA
Icc Operating Power Supply
Current /CS = VIL,
VIN = VIH or VIL,
II/O = 0mA
- 0.6
2 - 7 10 mA
/CS = VIL, II/O = 0mA,
Min. Duty Cycle = 100%,
VIN = VIH or VIL
- - 30 - - 70 mA ICC1 Average Operating
Current
/CS = VIL, II/O =0mA,
Cycle = 1us,
VIN = VIH or VIL
- - 5 - - 10 mA
ISB TTL Standby Current
(TTL Inputs) /CS= VIH,
VIN = VIH or VIL - - 0.3
- - 1 mA
ISB1 CMOS Standby Current
/CS>Vcc-0.2V, L 20 - - 40 uA
(CMOS Inputs) VIN>Vcc-0.2V or
VIN<Vss+0.2V LL 10 - - 20 uA
VOL Output Low Voltage IOL = 2.1mA 0.4
- - 0.4
V
VOH Output High Voltage IOH = -1.0mA 2.2
2.4
- - V
Note : Typical values are at Vcc =3.0V/5.0V, TA = 25°C
AC CHARACTERISTICS(I)
Vcc = 3V ±10%, TA = 0°C to 70°C (Normal) unless otherwise specified.
-55 -70 Min. Max.
Min. Max.
1 tRC Read Cycle Time 120 - 150 - ns
2 tAA Address Access Time - 120 - 150 ns
3 tACS Chip Select Access Time - 120 - 150 ns
4 tOE Output Enable to Output Valid - 55 - 60 ns
5 tCLZ Chip Select to Output in Low Z 10 - 10 - ns
6 tOLZ Output Enable to Output in Low Z 5 - 5 - ns
7 tCHZ Chip Disable to Output in High Z 0 40 0 50 ns
8 tOHZ Out Disable to Output in High Z 0 40 0 50 ns
9 tOH Output Hold from Address Change 10 - 10 - ns
10
tWC Write Cycle Time 120 - 150 - ns
11
tCW Chip Selection to End of Write 100 - 120 - ns
12
tAW Address Valid to End of Write 100 - 120 - ns
13
tAS Address Set-up Time 0 - 0 - ns
14
tWP Write Pulse Width 65 - 70 - ns
15
tWR Write Recovery Time 0 - 0 - ns
16
tWHZ Write to Output in High Z 0 40 0 50 ns
17
tDW Data to Write Time Overlap 40 - 50 - ns
18
tDH Data Hold from Write Time 0 - 0 - ns
19
tOW Output Active from End of Write 10 - 15 - ns
Symbol
Parameter
#
Unit