m41t93 STMicroelectronics, m41t93 Datasheet - Page 40

• Manufacturer Part Number: m41t93
• Description: Serial Spi Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

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Figure 18. Power down/up mode AC waveforms
Table 21.
1. All voltages referenced to V
2. Valid for Ambient Operating Temperature: T
V
Sym
V
t
RST
rec
SO
V CC
V SO
SCL
SDI
Reset threshold voltage
Battery back-up switchover
Hysteresis
Reset pulse Width (V
V
(V
CC
RST
Power down/up trip points DC characteristics
to Reset Delay, V
tPD
– 100mV; for V
SS
Parameter
.
CC
CC
CC
Rising)
slew rate of 10mV/µs
= (V
RST
(1)(2)
A
+ 100mV), falling to
= –40 to 85°C; V
DON'T CARE
CC
S
R
Z
= 2.38 to 5.5V (except where noted).
V
2.85
2.55
2.25
Min
140
25
RST
2.93
2.63
2.32
Typ
2.5
trec
Max
2.38
280
3.0
2.7
AI11839
Unit
mV
ms
µs
V
V
V
V