m41st85w STMicroelectronics, m41st85w Datasheet - Page 8

• Manufacturer Part Number: m41st85w
• Description: 3.0/3.3v I 2c Combination Serial Rtc, Nvram Supervisor And Microprocessor Supervisor
• Manufacturer: STMicroelectronics

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Table 1.
1. For 28-pin, 300mil embedded crystal SOIC only.
Figure 2.
E
EX
IRQ/FT/OUT
PFI
PFO
RST
RSTIN1
RSTIN2
SCL
SDA
SQW
WDI
V
V
V
V
NC
NF
CON
CC
OUT
SS
BAT
(1)
Signal names
28-pin SOIC connections
RSTIN1
RSTIN2
SQW
PFO
V SS
WDI
Conditioned Chip Enable Output
External Chip Enable
Interrupt/Frequency Test/Out Output (Open Drain)
Power Fail Input
Power Fail Output
Reset Output (Open Drain)
Reset 1 Input
Reset 2 Input
Serial Clock Input
Serial Data Input/Output
Square Wave Output
Watchdog Input
Supply Voltage
Voltage Output
Ground
Battery Supply Voltage
No Connect
No Function
NC
NC
NC
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
M41ST85W
AI03659
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V CC
EX
IRQ/FT/OUT
V OUT
NC
NC
PFI
NC
SCL
NC
RST
NC
SDA
E CON