Datasheet

 2002-2012 Microchip Technology Inc. DS21456D-page 19
TC7109/A
FIGURE 4-4: Full Time Parallel Interface to  PD8748H/494 Microcontrollers
FIGURE 4-5: TC7109A Handshake Interface to
 PD8748H/494 Microcontrollers
TC7109A
MODE
CE/LOAD
B
9
- B
12
POL, OR
B
1
- B
8
STATUS
RUN/HOLD
LBENHBEN
GND
GND
8
6
+5V
(See Text)
1mF
μPD8255A
RD WR D7 - D0
PC6
A0 - A1
CS
PA5 - PA0
PB7 - PB0
PC4
STB
A
PC6 INTR
μPD8748H/49H
Data Bus
Control Bus
Address Bus
INTR
A
Analog In
10kW
TC7109A
B
9
- B
12
POL, OR
B
1
- B
8
CE/LOAD
SEND
RUN/HOLD
MODE
8
6
μPD8255A
(Mode 1)
RD WR D7 - D0
PC
A0 - A1
CS
PA7 - PA0
PC4
PC5
PC6
PC7
INTR
μPD8748H/49H
Data Bus
Control Bus
Address Bus
Analog In
STB
A
PC3
IBF
A