DS1318 counter equivalent, parallel-interface elapsed time counter.
* Byte-Wide Parallel Interface
* 44-Bit Binary Counter Provides Timer with 244µs Resolution
* Automatic Power-Fail Detect and Switch Circuitry Selects Power S.
Typical Operating Circuit
VCC RPU
VCC SQW IRQ
WE EXT
OE
CPU
CE
DS1318
VBAT
A3
–A0
X1
DQ
&n.
The DS1318 parallel-interface elapsed time counter (ETC) is a 44-bit counter that maintains the amount of time that the device operates from main and/or backup power or during an external event. The internal frequency of the counter clock is 4.096kHz.
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