CDP1879 Intersil Corporation, CDP1879 Datasheet - Page 14

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

MEMORY
FIGURE 10. CPU WAKE-UP CIRCUIT USING THE CDP1879 REAL-TIME CLOCK
FIGURE 11. TYPICAL CDP1802 MEMORY MAPPED SYSTEM
ADDRESS
CDP1800
LINES
CLEAR
XTAL
XTAL
EFI
N0
N1
N2
CDP1879, CDP1879C-1
Q
V
INTERRUPT
DD
CDP1802
DATA BUS
V
CLEAR
DD
CD40107
MWR
MRD
MA0
MA1
MA2
MA7
TPA
1/2
CD40107
4-117
1/2
V
V
DD
DD
RESET
TPB/WR
RD
TPA
INTERRUPT
A0
A1
A2
CS
XTAL
A0
A1
A2
IO/MEM
PD
INT
XTAL
CDP1879
DB0 - DB7
CDP1879
XTAL
IO/MEM
CLOCK
XTAL
OUT
V
SS