Datasheet

Description M41T82, M41T83
8/64 DocID012578 Rev 16
Table 1. Signal names
Symbol Description
XI
(1)
1. For SO8 and QFN16 packages only.
32 KHz oscillator input
XO
(1)
32 KHz oscillator output
IRQ1/OUT/FT
(2)
2. For SOX18 and QFN16 packages only.
Interrupt 1/output driver/frequency test output (open drain)
SQW
(3)
3. Defaults to 32 KHz on power-up.
32 KHz programmable square wave output
RST Power-on reset output (open drain)
FT/
RST Frequency test output/power-on reset (open drain - M41T82 only)
IRQ2
(2)
Interrupt for alarm 2 (open drain)
SDA Serial data address input/output
SCL Serial clock input
V
BAT
Battery supply voltage (tie V
BAT
to V
SS
if no battery is connected.)
DU
(4)
4. DU pin must be tied to V
CC
.
Do not use
V
CC
Supply voltage
V
SS
Ground