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ISL1221 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Real Time Clock/Calendar - Intersil Corporation

भाग संख्या ISL1221
समारोह Real Time Clock/Calendar
मैन्युफैक्चरर्स Intersil Corporation 
लोगो Intersil Corporation लोगो 
पूर्व दर्शन
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<?=ISL1221?> डेटा पत्रक पीडीएफ

ISL1221 pdf
Block Diagram
SDA
SCL
SDA
BUFFER
SCL
BUFFER
ISL1221
I2C
INTERFACE
CONTROL
LOGIC
X1
X2
VDD
VTRIP
VBAT
CRYSTAL
OSCILLATOR
RTC
DIVIDER
POR
FREQUENCY
OUT
SWITCH
INTERNAL
SUPPLY
ALARM
EVIN
GND
Seconds
Minutes
Hours
Day of Week
Date
Month
Year
CONTROL
REGISTERS
USER
SRAM
IRQ/
EVDET
FOUT
Pin Descriptions
PIN
NUMBER
1
2
3
4
5
6
7
8
9
10
SYMBOL
DESCRIPTION
X1 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.
X2 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. X2 should be left open when X1 is driven from external source.
VBAT
GND
VBAT. This input provides a backup supply voltage to the device. VBAT supplies power to the device in the event that
the VDD supply fails. This pin should be tied to ground if not used.
Ground.
EVIN
Event Input (EVIN). The EVIN is an input pin that is used to detect an externally monitored event. When a high signal
is present at the EVIN pin an “event” is detected.
FOUT
SDA
Frequency Output FOUT, Frequency output pin, 15 selectable frequencies. Open drain output.
Serial Data (SDA). 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.
SCL Serial Clock (SCL). The SCL input is used to clock all serial data into and out of the device.Open drain output.
IRQ/EVDET Interrupt (IRQ)/Event Detect (EVDET) Output. Multi-functional pin that can be used as interrupt for Alarm and Event
Detect. Open Drain Output.
VDD
VDD. Power supply.
2 FN6316.1
July 15, 2010

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