Datasheet

12
FN3093.3
FIGURE 13. ICL7135 TO UART INTERFACE FIGURE 14. COMPLEX ICL7135 TO UART INTERFACE
FIGURE 15. ICL7135 TO MC6800, MCS650X INTERFACED FIGURE 16. ICL7135 TO MCS-48, -80, -85 INTERFACE
EPE
POL
D5
ICL7135
NC
RUN/HOLD
STROBE
TBR
TBRL
+5V
D4 D3 D2 D1 B1 B2 B4
TRO
B8
123456 87
UART
SERIAL OUTPUT
TO RECEIVING UART
IM6402/3
1A 2A 3A
B4B2B1
1B 2B 3B
234
D2D3
D5
876
D1
5
1Y 2Y 3Y
1
B8
POL
OVER
UNDER
SELECT
RUN/HOLD
STROBE
BUSY
ICL7135
ENABLE
IM6402/3
TRO RRI DRR
DR
TBRL
EPE
+5V
100pF 10K
74C157
TBR
D4
EN
74C157
1B 2B 3B 1A 2A 3A
1Y
2Y
3Y
B1D5 B8 B4 B2
D1
D2
D3
D4
ICL7135
1Y PA0
PA1
PA2
PA4
PA5
PA6
PA7
POL
OVER
UNDER
SELECT
RUN/
HOLD
STROBE
CA1 CA2
MC6820
MC680X
OR
MCS650X
PA3
EN
74C157
1B 2B 3B 1A 2A 3A
1Y
2Y
3Y
B1D5 B8 B4 B2
D1
D2
D3
D4
ICL7135
1Y PA0
PA1
PA2
PA4
PA5
PA6
PA7
POL
OVER
UNDER
SELECT
RUN/
HOLD
STROBE
STB
A
PB0
8255
(MODE1)
80C48
8080
8085,
ETC.
PA3
ICL7135