12032IVZ 데이터 시트보기 (PDF) - Renesas Electronics
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12032IVZ
Renesas Electronics
12032IVZ Datasheet PDF : 26 Pages
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ISL12032 Real Time Clock with 50/60 Hz clock and Crystal Backup
Functional Pin Descriptions
PIN
NUMBER
SYMBOL
DESCRIPTION
1
X1
The input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal.
X1 also can be driven directly from a 32.768kHz source with no crystal connected.
2
X2
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 an external source.
3
VBAT Battery Voltage. This pin 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.
4
GND
Ground.
5
AC
AC Input. The AC input pin accepts either 50Hz of 60Hz AC 2.5VP-P sine wave signal.
6
LV
Low Voltage detection output/Brownout Alarm. Open drain active low output.
7
EVIN
Event Input - The EVIN is a logic 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.
8
EVDET Event Detect Output. Active when EVIN is triggered. Open Drain active low output.
9
FOUT Frequency Output. Register selectable frequency clock output. CMOS output levels.
10
ACRDY AC Ready. Open Drain output. When High, AC input signal is qualified for timing use.
11
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.
12
SCL
Serial Clock. The SCL input is used to clock all serial data into and out of the device.
13
IRQ
Interrupt Output. Open Drain active low output. Interrupt output pin to indicate alarm is triggered.
14
VDD
Power supply.
FN6618 Rev 3.00
May 5, 2011
Page 3 of 26
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