M41ST84W_08 STMICROELECTRONICS [STMicroelectronics], M41ST84W_08 Datasheet - Page 30

• Manufacturer Part Number: M41ST84W_08
• Description: 3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

DC and AC parameters
Figure 18. Power down/up mode AC waveforms
Table 14.
1. Valid for ambient operating temperature: T
2. V
3. V
4. Programmable (see
30/34
Symbol
V
t
t
t
rec
PFD
CC
PFD
t
FB
t
PFD
F
t
RB
R
(2)
(3)
(4)
passes V
(max) to V
(min) to V
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
RST
OUTPUTS
Power down/up AC characteristics
V
V
PFI to PFO propagation delay
V
V
Power up deselect time
PFD
PFD
PFD
SS
PFD
SS
PFD
PFO
to V
(min).
fall time of less than t
(max) to V
(min) to V
(min) to V
(min) fall time of less than t
Table 7 on page
PFD
(PER CONTROL INPUT)
(min) V
VALID
RECOGNIZED
SS
PFD
PFD
tF
V
(max) V
(min) V
CC
CC
Parameter
26)
rise time
fall time
FB
CC
CC
may cause corruption of RAM data.
A
= –40 to 85°C; V
fall time
rise time
F
tFB
(1)
may result in deselection/write protection not occurring until 200 µs after
CC
tDR
DON'T CARE
= 2.7 to 3.6 V (except where noted).
HIGH-Z
tRB
Min
300
10
10
40
1
Typ
15
tR
(PER CONTROL INPUT)
tREC
RECOGNIZED
Max
VALID
200
25
AI03681
M41ST84W
Unit
ms
µs
µs
µs
µs
µs