m48t12 STMicroelectronics, m48t12 Datasheet - Page 19

• Manufacturer Part Number: m48t12
• Description: 5.0v, 16 Kbit 2kb X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

Table 9.
1. Valid for Ambient Operating Temperature: T
2. Outputs deselected.
3. Measured with Control Bits set as follows: R = '1'; W, ST, FT = '0.'
Figure 12. Power down/up mode AC waveforms
Note:
Symbol
I
I
I
CC1
CC2
LO
V
V
I
V
V
I
CC
OH
OL
LI
IH
IL
(2)
(3)
(3)
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
OUTPUTS
DC characteristics
Inputs may or may not be recognized at this time. Caution should be taken to keep E high as
V
rises above V
reset is being applied to the processor, a reset condition may not occur until after the system
clock is running.
Input Leakage Current
Output Leakage Current
Supply Current
Supply Current (Standby) TTL
Supply Current (Standby) CMOS
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
CC
rises past V
tPD
(PER CONTROL INPUT)
VALID
Parameter
PFD
RECOGNIZED
PFD
tF
(min) but before normal system operations begin. Even though a power on
(min). Some systems may perform inadvertent WRITE cycles after V
A
= 0 to 70°C; V
tFB
CC
Test condition
0V ≤ V
0V ≤ V
E = V
Outputs open
= 4.75 to 5.5V or 4.5 to 5.5V (except where noted).
I
I
OL
OH
tDR
E = V
= 2.1mA
CC
= –1mA
OUT
IN
DON'T CARE
HIGH-Z
– 0.2V
≤ V
IH
≤ V
CC
CC
(1)
tRB
–0.3
Min
2.2
2.4
NOTE
tR
(PER CONTROL INPUT)
V
CC
Max
0.8
0.4
trec
RECOGNIZED
±1
±1
80
3
3
+ 0.3
VALID
AI00606
Unit
mA
mA
mA
µA
µA
V
V
V
V
19/24
CC