Toshiba TLCS-900/H1 Series Manual page 308

ADMOD1 Bit symbol VREFON
(12B9H)
Read/Write
Reset State
Function VREF
application
control
0: Off
1: On
ADMOD2 Bit symbol
(12BAH)
Read/Write
Reset
State
Function
Note: As pin AN3 also functions as the
ADTRG
AD Mode Control Register 1
7 6 5
−
I2AD
R/W R/W
0 0 0
IDLE2 Always
write "0"
0: Stop
1: Operate
<ADCH1:0>
AD Mode Control Register 2
7 6
Always
write "0"
ADTRG
with < ADTRGE > set to "1".
Figure 3.11.3 AD Converter Related Register
92CH21-306
4 3
− −
0 0
Always Always
write "0" write "0"
Analog input channel selection
<SCAN> 0
Channel
fixed
00 AN0
01 AN1
10 AN2
11 (Note) AN3
IDLE2 control
0 Stopped
1 In operation
Control of application of reference voltage to AD
converter
0 Off
1 On
Before starting conversion (before writing 1 to
ADMOD0<ADS>), set the <VREFON> bit to 1.
5 4 3
− − −
0 0 0
Always Always
write "0" write "0"
AD conversion start control by external trigger
( input)
ADTRG
0 Disabled
1 Enabled
input pin, do not set < ADCH1:0 > = "11" when using
TMP92CH21
2 1
−
ADCH1
R/W
0 0
Always Analog input channel
write "0" selection
1
Channel
scanned
AN0
AN0→AN1
AN0→AN1→AN2
AN0→AN1→AN2→AN3
2 1
− −
R/W
0 0
Always Always
write "0" write "0"
2009-06-19
0
ADCH0
0
0
ADTRGE
0
AD external
trigger start
control
0: Disable
1: Enable