M48Z12-150PC6 STMICROELECTRONICS [STMicroelectronics], M48Z12-150PC6 Datasheet - Page 5

• Manufacturer Part Number: M48Z12-150PC6
• Description: 16 Kbit 2Kb x 8 ZEROPOWER SRAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 8. Power Down/Up Mode AC Characteristics
(T
Notes: 1. V
Figure 5. Power Down/Up Mode AC Waveforms
Note: Inputs may or may not be recognized at this time. Caution should be taken to keep E high as V
may perform inadvertent write cycles after V
reset is being applied to the processor, a reset condition may not occur until after the system clock is running.
A
Symbol
= 0 to 70 C or –40 to 85 C)
t
t
FB
t
t
t
REC
F
2. V
t
PD
RB
R
(1)
(2)
V
PFD
CC
PFD
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
OUTPUTS
passes V
(max) to V
(min) to V
E or W at V
V
V
V
V
E or W at V
PFD
PFD
PFD
SO
PFD
to V
(min) to V
SO
(max) to V
(min) to V
PFD
tPD
(min).
fall time of less than t
PFD
(min) fall time of less than t
(PER CONTROL INPUT)
IH
IH
(min) V
VALID
RECOGNIZED
before Power Down
after Power Up
PFD
SO
PFD
tF
V
(max) V
(min) V
CC
CC
CC
Fall Time
Rise Time
rises above V
FB
Parameter
CC
CC
may cause corruption of RAM data.
Rise Time
tFB
Fall Time
F
may result in deselection/write protection not occurring until 50 s after
PFD
(min) but before normal system operations begin. Even though a power on
tDR
DON'T CARE
HIGH-Z
tRB
Min
300
10
CC
0
0
1
2
rises past V
NOTE
tR
(PER CONTROL INPUT)
M48Z02, M48Z12
Max
PFD
tREC
RECOGNIZED
(min). Some systems
VALID
AI00606
Unit
ms
s
s
s
s
s
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