MB88111 查看數據表（PDF） - Fujitsu

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MB88111

A/D Converter (With 24-Channel Input at 10-bit Resolution)

Fujitsu 

MB88111

s FUNCTIONAL DESCRIPTION

1. SC (Serial Command) Register (Reset status: 0000H)

The SC register contains an A/D converter command and an input channel identification. Accessing this register

after releasing it from the reset status activates the A/D converter.

Note that this register accepts setting even during A/D conversion.

Note also that input of a command to the register must take an interval of at least 4 CCLKs after input of the

previous command.

MSB

LSB

bf be bd bc bb ba b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

Command

Channel

Don't care

(1) Command bits

A string of command bits selects an A/D converter command such as STOP. Setting a command during execution

of another command cancels the command currently being executed.

bf

be

bd

Command name

Function

0

0

0

STOP

Stops A/D conversion (if it is being executed) and

initializes the A/D converter. This command has the same

effect as RSTX.

0

0

1

STC

Executes A/D conversion of the specified channel once.

(See Section 3 “STC (Standard Conversion) Command.”)

0

1

0

—

Unused (*)

0

1

1

—

Unused (*)

1

0

0

NOP

No-op command. Input of this command during A/D

conversion does not affect operation. If followed by this

command, the ATC command can transfer converted data

while holding the NOP command.

1

0

1

ATC

The basic operation of this command is the same as that

of the STC command. The ATC command can leave the

A/D conversion start timing to the external trigger pin

ATGX. (See Section 4 “ATC (Auto Trigger Conversion)

Command.”)

1

1

0

—

Unused (*)

1

1

1

—

Unused (*)

* : These command settings cause the STOP command to be executed.

8

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