msm62x42b Oki Semiconductor, msm62x42b Datasheet - Page 24

• Manufacturer Part Number: msm62x42b
• Description: Real Time Clock Ic With Built-in Crystal
• Manufacturer: Oki Semiconductor

MSM62X42B
TYPICAL APPLICATION INTERFACE WITH MSM62X42B AND MICROCOMPUTER
Note 1) If the address of program memory and the address of MSM62X42B do not overlap, the
Note 2) If the address of IO/MSM62X42B for the decoder does not overlap with other
Note 3) If 8085 does not enter into the state of HALT or HOLD during CS
64
(8085)
A
S
addresses, this is not required.
R
4
1
8085
1
~A
IO/M
ALE
AD
AD
AD
AD
WR
and S
RD
and R
S
S
15
1
2
3
2
1
0
0
2
+5.7V
of the Decoder are not required.
are not required.
V
F
C372
= 0.69V
or
R
R
MSM62X42B
IS1588
1
2
D
D
D
D
CS
ALE
A
A
A
A
WR
RD
3
2
1
0
3
2
1
0
100 W
0
V
F
= 0.69V
1.2 ¥ 3 = 3.6V
Ni–Cd batteries
+
–
Tantalum
capacitor
4.7µF
+
or
Ceramic
capacitor
0.01µ
AD
A
A
8085
12
0
0
IO/M
~AD
~A
~A
WR
RD
11
S
S
GND
15
V
3
1
0
DD
MSM62X42BRS
¡ Semiconductor
1
= "H" of MSM62X42B,
R
R
MSM62X42B
2
1
ALE
D
D
D
D
CS
A
A
A
A
WR
RD
3
2
1
0
3
2
1
0
0