M68Z512
Table 5. DC Characteristics
Symbol
Parameter
Test Condition(1)
Min
Typ
ILI Input Leakage Current
0V ≤ VIN ≤ VCC
ILO Output Leakage Current
0V ≤ VOUT ≤ VCC
ICC1(2) Supply Current
VCC = 3.6V
ICC2(3)
Supply Current (Standby)
TTL
VCC = 3.6V, E = VIH
ICC3(4)
Supply Current (Standby)
CMOS
VCC = 3.6V, E ≥ VCC – 0.3V, f = 0
1.6
VIL Input Low Voltage
–0.3
VIH Input High Voltage
2.2
VOL Output Low Voltage
IOL = 2.1mA
VOH Output High Voltage
IOH = –1mA
2.4
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5V (except where noted).
2. Average AC current, Outputs open, cycling at tAVAV minimum.
3. All other Inputs at VIL ≤ 0.8V or VIH ≥ 2.2V.
4. All other Inputs at VIL ≤ 0.3V or VIH ≥ VCC –0.3V.
Max Unit
±1
µA
±1
µA
90
mA
15
mA
20
µA
0.8
V
VCC + 0.3 V
0.4
V
V
OPERATION
The M68Z512 has a Chip Enable power down fea-
ture which invokes an automatic standby mode
whenever Chip Enable is de-asserted (E = High).
An Output Enable (G) signal provides a high
speed tri-state control, allowing fast READ/WRITE
Table 6. Operating Modes
Operation
E
W
Read
VIL
VIH
Read
VIL
VIH
Write
VIL
VIL
Deselect
Note: X = VIH or VIL.
VIH
X
Cycles to be achieved with the common I/O data
bus. Operational modes are determined by device
control inputs W and E as summarized in the Op-
erating Modes table (see Table 6).
G
DQ0-DQ7
VIH
Hi-Z
VIL
Data Output
X
Data Input
X
Hi-Z
Power
Active
Active
Active
Standby
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