參數(shù)資料
型號: M41T00M
廠商: 意法半導(dǎo)體
英文描述: Serial Access TIMEKEEPER
中文描述: 串行訪問計時
文件頁數(shù): 1/15頁
文件大小: 99K
代理商: M41T00M
1/15
May 2000
M41T00
Serial Access TIMEKEEPER
I
2.0V to 5.5V SUPPLY VOLTAGE
I
COUNTERS for SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, YEARS and
CENTURY
I
YEAR 2000 COMPLIANT
I
SOFTWARE CLOCK CALIBRATION
I
AUTOMATIC SWITCH-OVER and DESELECT
CIRCUITRY
I
I
2
C BUS COMPATIBLE
I
ULTRA-LOW BATTERY SUPPLY CURRENT
of 1μA
I
LOW OPERATING CURRENT of 300μA
I
OPERATING TEMPERATURE of –40 to 85°C
I
AUTOMATIC LEAP YEAR COMPENSATION
I
SPECIAL SOFTWARE PROGRAMMABLE
OUTPUT
DESCRIPTION
The M41T00 TIMEKEEPER
RAM is a low power
Serial TIMEKEEPER with a built-in 32.768kHz os-
cillator (external crystal controlled). Eight 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 serial-
ly via a two-line bi-directional bus. The built-in ad-
dress register is incremented automatically after
each write or read data byte.
Figure 1. Logic Diagram
AI00530
OSCI
VCC
M41T00
VSS
SCL
OSCO
SDA
FT/OUT
VBAT
8
1
SO8 (M)
150mil Width
Table 1. Signal Names
OSCI
Oscillator Input
OCSO
Oscillator Output
FT/OUT
Frequency Test / Output Driver
(Open Drain)
SDA
Serial Data Address Input / Output
SCL
Serial Clock
V
BAT
Battery Supply Voltage
V
CC
Supply Voltage
V
SS
Ground
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