參數(shù)資料
型號(hào)： ISL1208IU8Z-TK
廠商： INTERSIL CORP
元件分類(lèi)： XO, clock
英文描述： I2C Real Time Clock/Calendar
中文描述： REAL TIME CLOCK, PDSO8
封裝： ROHS COMPLIANT, PLASTIC, MO-187AA, MSOP-8
文件頁(yè)數(shù)： 2/21頁(yè)
文件大小： 393K
代理商： ISL1208IU8Z-TK
2
FN8085.3
July 29, 2005
Block Diagram
I
2
C
INTERFACE
RTC
CONTROL
LOGIC
ALARM
FREQUENCY
OUT
RTC
DIVIDER
SDA
BUFFER
CRYSTAL
OSCILLATOR
POR
SWITCH
SCL
BUFFER
SDA
SCL
X1
X2
V
DD
V
BAT
IRQ/
F
OUT
INTERNAL
SUPPLY
V
TRIP
Seconds
Minutes
Hours
Day of Week
Date
Month
Year
USER
SRAM
CONTROL
REGISTERS
Pin Descriptions
PIN
NUMBER
SYMBOL
DESCRIPTION
1
X1
The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz
quartz crystal. X1 can also be driven directly from a 32.768kHz source.
2
X2
The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz
quartz crystal.
3
V
BAT
This input provides a backup supply voltage to the device. V
BAT
supplies power to the device in the event that the
V
DD
supply fails. This pin should be tied to ground if not used.
4
GND
Ground.
5
SDA
Serial Data (SDA) is a bidirectional pin used to transfer serial data into and out of the device. It has an open drain
output and may be wire OR’ed with other open drain or open collector outputs.
6
SCL
The Serial Clock (SCL) input is used to clock all serial data into and out of the device.
7
IRQ/F
OUT
Interrupt Output/Frequency Output is a
multi-functional pin that can be used as interrupt or frequency output pin. The
function is set via the configuration register.
8
V
DD
Power supply.
ISL1208
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