CDP1879 Intersil Corporation, CDP1879 Datasheet - Page 7

• Manufacturer Part Number: CDP1879
• Description: CMOS Real-Time Clock
• Manufacturer: Intersil Corporation

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