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Description
CDP1879 View Datasheet(PDF) - Intersil
Part Name
Description
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CDP1879
CMOS Real-Time Clock
Intersil
CDP1879 Datasheet PDF : 18 Pages
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CDP1879, CDP1879C-1
FREEZE
CIRCUIT
AM - PM
AND
HOUR LOGIC
CALENDAR
LOGIC
XTAL
OSCILLATOR
XTAL
PRESCALE
SECOND
MINUTE
HOUR
DAY
MONTH
PRESCALE CLOCK
SELECT SELECT
CLOCK OUT
INT
RESET
V
DD
V
SS
CLOCK AND
INT. LOGIC
CONTROL
REGISTER
INT. STATUS
REGISTER
8-BIT DATA BUS
COMPARATOR
SECOND
LATCH
MINUTE
LATCH
HOUR
LATCH
I/O
INTERFACE
DB0-DB7
A0
A1
A2
TPA
IO/MEM
TPB/WR
RD
CS
POWER DOWN
ADDRESS DECODE
AND
CONTROL LOGIC
FIGURE 2. FUNCTIONAL DIAGRAM - TIME COUNTERS HIGHLIGHTED
4-110
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