m41t60 STMicroelectronics, m41t60 Datasheet - Page 3

• Manufacturer Part Number: m41t60
• Description: Serial Access Real-time Clock
• Manufacturer: STMicroelectronics

M41T60
1
Note:
1
Summary description
The M41T60 is a low power Serial RTC with a built-in 32.768kHz oscillator (external crystal
controlled). Eight registers are used for the clock/calendar function and are configured in
binary coded decimal (BCD) format. Addresses and data are transferred serially via a two-
line bi-directional bus. The built-in address register is increased automatically after each
WRITE or READ data byte.
The eight clock address locations contain the century, year, month, date, day, hour, minute,
and second; in 24-hour BCD format. Corrections for 28-, 29- (leap year), 30-, and 31-day
months are made automatically.
The M41T60 is supplied in 16-lead QFN package.
Figure 1.
Open drain
Table 1. Signal names
Figure 2.
OFIRQ/OUT
Logic diagram
16-pin QFN connections
SDA
SCL
V
V
XO
FT
XI
CC
SS
SDA
SCL
XO
XI
Oscillator Input
Oscillator Output
Frequency Test Output (Open Drain)
Serial Data Address Input / Output
Serial Clock
Oscillator Fail Interrupt/OUT Output (Open Drain)
Supply Voltage
Ground
FT
V
XO
SS
XI
(1)
1
2
3
4
V SS
V CC
16
M41T60
5
15
6
14
7
13
8
FT (1)
OFIRQ/OUT (1)
10
12
11
9
OFIRQ/OUT
NC
SCL
SDA
AI08869
AI08870
(1)
Summary description
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