Datasheet

TC7109/A
DS21456D-page 18  2002-2012 Microchip Technology Inc.
FIGURE 4-2: Three-Stating Several TC7109As to a Small Bus
FIGURE 4-3: Full Time Parallel Interface to
 PD8748H/494 Microcontrollers
TC7109A
MODE CE/LOAD
B
9
- B
12
POL, OR
B
1
- B
8
LBENHBEN
GND
8
Analog In
6
RUN/HOLD
+5V
Converter Select
Converter Select Converter Select
TC7109A
MODE CE/LOAD
B
9
-
B
12
POL, OR
B
1
- B
8
LBENHBEN
GND
8
Analog In
6
RUN/HOLD
+5V
TC7109A
MODE CE/LOAD
B
9
- B
12
POL, OR
B
1
- B
8
LBENHBEN
GND
8
Analog In
6
RUN/HOLD
+5V
Byte Select Flags
TC7109A
MODE
CE/LOAD
B
9
- B
12
POL, OR
B
1
- B
8
STATUS
RUN/HOLD
LBENHBEN
GND
GND
8
6
See Text
μPD8255A
(Mode 0)
RD WR D7 - D0
A0 - A1
CS
PA5 - PA0
PB7 - PB0
PC5
μPD8748H/49H
Data Bus
Control Bus
Address Bus
Analog In
+5V