参数资料
型号: M41T00
厂商: STMICROELECTRONICS
元件分类: 时钟/数据恢复及定时提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封装: 0.150 INCH, PLASTIC, SO-8
文件页数: 1/15页
文件大小: 96K
代理商: M41T00
M41T00
Serial Access TIMEKEEPER
March 1999
1/15
2.0V to 5.5V SUPPLY VOLTAGE
COUNTERS for SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, YEARS and
CENTURY
YEAR 2000 COMPLIANT
SOFTWARE CLOCK CALIBRATION
AUTOMATIC SWITCH-OVER and DESELECT
CIRCUITRY
I2C BUS COMPATIBLE
ULTRA-LOW BATTERY SUPPLY CURRENT
of 1
A
LOW OPERATING CURRENT of 300
A
OPERATING TEMPERATURE of –40 to 85°C
AUTOMATIC LEAP YEAR COMPENSATION
SPECIAL SOFTWARE PROGRAMMABLE
OUTPUT
DESCRIPTION
The M41T00 TIMEKEEPER RAM is a low power
Serial TIMEKEEPER with a built-in 32.768 kHz
oscillator (external crystal controlled). Eigth bytes
of the RAM 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 ad-
dress register is incremented automatically after
each write or read data byte.
AI00530
OSCI
VCC
M41T00
VSS
SCL
OSCO
SDA
FT/OUT
VBAT
Figure 1. Logic Diagram
OSCI
Oscillator Input
OCSO
Oscillator Output
FT/OUT
Frequency Test / Output Driver
SDA
Serial Data Address Input / Output
SCL
Serial Clock
VBAT
Battery Supply Voltage
VCC
Supply Voltage
VSS
Ground
Table 1. Signal Names
8
1
SO8 (M)
150mil Width
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