M41T81MX6TR STMicroelectronics, M41T81MX6TR Datasheet - Page 6

• Manufacturer Part Number: M41T81MX6TR
• Description: Real Time Clock Serial 512 (64x8)
• Manufacturer: STMicroelectronics

Specifications of M41T81MX6TR

• Function: Clock, Calendar, Alarm, Timer Interrupt
• Rtc Memory Size: 20 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Package / Case: SO-28
• Time Format: HH:MM:SS:hh
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Description
Figure 2.
Figure 3.
1. Open drain output
2. Square wave function has the highest priority on IRQ/FT/OUT/SQW output.
3. V
6/29
CRYSTAL
SO
= V
V
SDA
SCL
BAT
CC
8-pin SOIC (M) connections
Block diagram
– 0.5 V (typ)
V
BAT
V
SO
(3)
OSCILLATOR
INTERFACE
COMPARE
32KHz
I
2
C
PROTECT
WRITE
V
V
XO
BAT
SS
XI
Doc ID 7529 Rev 10
1
2
3
4
M41T81
FREQUENCY TEST
REAL TIME CLOCK
OUTPUT DRIVER
& CALIBRATION
SQUARE WAVE
RTC W/ALARM
WATCHDOG
CALENDAR
5
8
7
6
V
IRQ/FT/OUT/SQW
SCL
SDA
CC
INTERNAL
POWER
AFE
SQWE
FT
OUT
IRQ/FT/OUT/SQW
AI04769
AI04616
M41T81
(1,2)