M41T11_11 STMICROELECTRONICS [STMicroelectronics], M41T11_11 Datasheet - Page 21

• Manufacturer Part Number: M41T11_11
• Description: Serial real-time clock (RTC) with 56 bytes of NVRAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41T11
Figure 15. Power down/up mode AC waveforms
Table 9.
1. Valid for ambient operating temperature: T
2. V
Table 10.
1. Valid for ambient operating temperature: T
2. All voltages referenced to V
3. In 3.3 V application, if initial battery voltage is
4. Switchover and deselect point.
Symbol
V
Symbol
through wave soldering the battery) in order to avoid inadvertent switchover/deselection for V
operation.
SO
V CC
V SO
SDA
SCL
CC
t
t
REC
PD
(4)
fall time should not exceed 5 mV/µs.
Battery backup switchover voltage
Power down/up AC characteristics
Power down/up trip points DC characteristics
SCL and SDA at V
SCL and SDA at V
tPD
Parameter
SS
.
(1)(2)
Parameter
Doc ID 6103 Rev 10
IH
IH
before power down
after power up
A
A
= –40 to 85°C; V
= –40 to 85°C; V
(1)(2)
3.4 V, it may be necessary to reduce battery voltage (i.e.,
DON'T CARE
V
BAT
Min
– 0.80
CC
CC
= 2.0 to 5.5 V (except where noted).
= 2.0 to 5.5 V (except where noted).
V
BAT
Typ
– 0.50
Min
10
0
DC and AC parameters
V
BAT
Max
Max
– 0.30
tREC
(3)
CC
– 10%
AI00596
Unit
Unit
ns
µs
V
21/30