m41st84w STMicroelectronics, m41st84w Datasheet - Page 25

• Manufacturer Part Number: m41st84w
• Description: 3.0/3.3v I 2c Serial Rtc With Supervisory Functions
• Manufacturer: STMicroelectronics

Figure 19. Power Down/Up Mode AC Waveforms
Table 14. Power Down/Up AC Characteristics
Note: 1. Valid for Ambient Operating Temperature: T
Symbol
t
t
t
rec(4)
t
FB
t
PFD
2. V
3. V
4. Programmable (see
F
t
RB
R
(2)
(3)
V
PFD
PFD
PFD
(max) to V
(min).
(min) to V
V
V
PFI to PFO Propagation Delay
V
V
Power up Deselect Time
PFD
PFD
PFD
SS
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
RST
OUTPUTS
to V
(max) to V
(min) to V
(min) to V
SS
PFD
fall time of less than t
PFD
(min) fall time of less than t
Table 7., page
PFO
(min) V
SS
PFD
(PER CONTROL INPUT)
PFD
V
VALID
(max) V
(min) V
RECOGNIZED
CC
CC
Parameter
tF
Fall Time
Rise Time
22)
CC
CC
FB
may cause corruption of RAM data.
Fall Time
Rise Time
A
F
(1)
= –40 to 85°C; V
tFB
may result in deselection/write protection not occurring until 200µs after V
tDR
DON'T CARE
CC
HIGH-Z
= 2.7 to 3.6V (except where noted).
tRB
Min
300
10
10
40
1
tR
Typ
(PER CONTROL INPUT)
15
tREC
RECOGNIZED
VALID
AI03681
Max
200
25
M41ST84W
CC
Unit
ms
µs
µs
µs
µs
µs
passes
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