MB88111 Datasheet, PDF (8/26 Pages) Fujitsu Component Limited. – A/D Converter (With 24-Channel Input at 10-bit Resolution)

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.
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