MB88111 Datasheet, PDF (12/26 Pages) Fujitsu Component Limited. – A/D Converter (With 24-Channel Input at 10-bit Resolution)

MB88111
5. Port Input Command
The port input command executes I/O evaluation of 8-channel inputs from the AN16 to AN23 pins at a prescribed
threshold in 10 clock cycles and outputs the results as port input data. The processing sequence is activated
each time port input is selected by the STC command. Port input data is output in the following format:
MSB
LSB
Bf Be Bd Bc Bb Ba B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Evaluation data
“0” ENDC
“1”
Evaluation data:
The evaluation values of AN23 to AN16 are output to bits Bf to B8.
Evaluation value
“H”: Vin ≥ 0.8 x Vcc
“L”: Vin ≤ 0.2 x Vcc
ENDC (A/D completion flag):
This bit is set to “1” upon completion of A/D conversion. It is set to “0” upon completion of serial transfer.
• Example of STC command execution (3) (Port input command)
SCK
SIN
SOT
ENDC
IRQX
AN16
to
AN23
A/D
16 Cycle
CH9
0000H
10 Cycle
16 Cycle
STOP
Data 9
Evaluation
12