ISL12023 데이터 시트보기 (PDF) - Renesas Electronics
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ISL12023
Renesas Electronics
ISL12023 Datasheet PDF : 29 Pages
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ISL12023
Block Diagram
SDA
SCL
SDA
BUFFER
SCL
BUFFER
I2C
INTERFACE
CONTROL
LOGIC
REGISTERS
X1
X2
VDD
VTRIP
VBAT
GND
CRYSTAL
OSCILLATOR
RTC
DIVIDER
POR
FREQUENCY
OUT
SWITCH
INTERNAL
SUPPLY
TEMPERATURE
SENSOR
FREQUENCY
CONTROL
ALARM
BROWNOUT
ALARM
SECONDS
MINUTES
HOURS
DAY OF WEEK
DATE
MONTH
YEAR
CONTROL
REGISTERS
USER
SRAM
IRQ
FOUT
LVRST
Pin Configuration
ISL12023
(14 LD TSSOP)
TOP VIEW
NC 1
14
X1 2
13
X2 3
12
VBAT
4
11
GND 5
10
LVRST 6
9
NC 7
8
NC
VDD
IRQ
SCL
SDA
FOUT
NC
Pin Descriptions
PIN
NUMBER SYMBOL
DESCRIPTION
1, 7, 8, 14 NC No connect. Do not connect.
2
X1 Crystal Input. 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.
3
X2 Crystal Output. 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.
4
VBAT Backup Supply. 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.
5
GND Ground.
6
LVRST Low Voltage Reset pin for VCC Brownout Mode.
Open drain configuration
9
FOUT Frequency Output. Frequency selectable through
Control Register. Open drain configuration.
10
SDA Serial Data. SDA is a bi-directional 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.
11
SCL Serial Clock. The SCL input is used to clock all
serial data into and out of the device.
12
IRQ Interrupt Output. Provides active low interrupt
signal. Open drain configuration.
13
VDD Power Supply.
FN6682 Rev 3.00
December 6, 2011
Page 2 of 29
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