TMS370 datasheet(42/73 Pages) TI

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TMS370Cx6x

8-BIT MICROCONTROLLER

SPNS033C – SEPTEMBER 1995 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

analog-to-digital converter 1 (ADC1) module (continued)

D The ADDATA register, which contains the digital result of the last ADC1 conversion

D ADC1 operations can be accomplished through either interrupt driven or polled algorithms.

D Six ADC1 module control registers are located in the control register frame beginning at address 1070h.

The ADC1 module control registers are illustrated in Table 21.

Table 21. ADC1 Module Control Register Memory Map

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

REG

P070

CONVERT

START

SAMPLE

START

REF VOLT

SELECT2

REF VOLT

SELECT1

REF VOLT

SELECT0

AD INPUT

SELECT2

AD INPUT

SELECT1

AD INPUT

SELECT0

ADCTL

P071

—

AD READY

AD INT

FLAG

AD INT

ENA

ADSTAT

P072

A-to-D Conversion Data Register

ADDATA

P073

P07C

Reserved

P07D

Port E Data Input Register

ADIN

P07E

Port E Input Enable Register

ADENA

P07F

AD STEST

PRIORITY

AD ESPEN

—

ADPRI

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