3-108

TELCOM SEMICONDUCTOR, INC.

TC7109

TC7109A

12-BIT

ANALOG-TO-DIGITAL CONVERTERS

TC7109A

MODE

B9–B12

POL, OR

B1–B8

STATUS

LBEN

ANALOG

IN

HBEN

GND

GND

8

6

MC6820

PA–5

PB–7

CB2

MC6800

OR

MCS650X

CONTROL

BUS

ADDRESS

BUS

CE/

LOAD

RUN/HOLD

CB1

DATA

BUS

CRB - -11R-01

Figure 16. Full-Time Parallel Interface to MC6800 or MCS650X Microprocessor

TC7109A

B9–B12

POL, OR

B1–B8

RUN/HOLD

MODE

8

6

8008, 8080, 8085

DATA BUS

CONTROL BUS

ADDRESS BUS

ANALOG

IN

RD

A15

A14

CE/LOAD

LBEN

HBEN

+5V

GND

* MEMR or IOR for 8080/8228 system.

*

Figure 17. TC7109A Direct Interface to 8080/8085