Real-Time Clock
(l)UMC
UM82C8167A
Real Time Clock (RTC)
Feature
• Microprocessor compatible (8-bit data bus) • Milliseconds through mo...
Description
(l)UMC
UM82C8167A
Real Time Clock (RTC)
Feature
Microprocessor compatible (8-bit data bus) Milliseconds through month counters 56 bits of RAM with comparator to compare the real
time counter to the RAM data 2 INTERRUPT OUTPUTS with 8 possible interrupt
signals Single +5V power supply
POWE R DOWN input that disables all inputs and outputs except for one of the interrupts
Status bit to indicate rollover during a read 32,768 Hz crystal oscillator Four-year calendar (no leap year) 24-hour clock 24 pin dual-in-line package
General Description
The UM82C8167A is a Si-gate CMOS LSI used as a real time clock in micro system. This product includes an addressable real time counter, 56 bits of static RAM and two interrupt outputs. User can disable the chip from the
rest of the system for standby low power operation by using of a POWER DOWN inpLIt. With an on chip oscillation circuit, it can generate the 32,768 Hz time base.
Pin Configuration
Block...
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