ML670100 datasheet(6/27 Pages) OKI

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Semiconductor

ML670100

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PIN DESCRIPTIONS (Cont.)

Type

Signal

Name

I/O Direction Description

Analog-

to-digital

VREF

Input

This input is the reference voltage for the analog-to-digital

converter channels 7-0. Connect it to VDD.

converter AI[7:0]

Input

These are analog signal input pins for analog-to-digital

converter channels 7-0.

Debugg-

ing

TDI

Input

This input is the serial data input for the debugging scan circuit.

It represents a secondary function for I/O port PIO8[7].

interface TDO

Output

This output is the serial data output for the debugging scan

circuit.

It represents a secondary function for I/O port

PIO8[6].

nTRST

Input

"L" level input to this pin resets the debugging scan circuit.

It represents a secondary function for I/O port PIO8[5].

TMS

Input

This input selects the mode for the debugging scan circuit.

It represents a secondary function for I/O port PIO8[4].

TCK

Input

This input is the serial clock input for the debugging scan

circuit.

It represents a secondary function for I/O port

PIO8[3].

DBGEN

Input

"H" level input to this pin enables the CPU's debugging

function.

It represents a secondary function for I/O port

PIO8[2].

DBGRQ

Input

This input is a debugging request signal from an external

device.

It represents a secondary function for I/O port

PIO8[1].

DBGACK

Output

This output is an acknowledgment signal to a debugging

request signal from an external device. It represents a secondary

function for I/O port PIO8[0].

I/O ports PIO8[7:0]