TMP92CF30
2009-06-12
92CF30-517
3.22 Analog-Digital Converter (ADC)
A 10-bit serial conversion analog/digital converter (AD converter) having six channels of
analog input is built in.
Figure 3.22.1 shows the block diagram of the AD converter.
The 6-analog input channels (AN0-AN5) can be used as general-purpose inputs.
Note1: To reduce the power supply current by IDLE2, IDLE1 and STOP mode, the standby state may be maintained
with the internal comparator still being enabled, depending on the timing. Check that the AD converter
operation is in a stop before executing HALT instruction. In IDLE2 mode it operates only the case of
ADMOD0<I2AD>
=
“0”.
Note2: Setting ADMOD1<DACON>
=
"0" while the AD converter is in a stop can reduce current consumption.
Figure 3.22.1 ADC Block Diagram
AD Monitor function interrupt
INTADM
Complete interrupt AD
INTADHP
Normal AD Conversion
complete interrupt
INTAD
Comparator
VREFH
VREFL
Sample
Hold
ADMOD1
Scan
repeat
Busy
End
Start
+
−
Internal data bus
Channel
selection
control circuit
A / D
Conversion
Result Register
ADREG0L~5L
ADREG0H~5H
D/A Converter
Normal AD
Converter Control
Circuit
ADMOD0
ADMOD2
ADMOD3
High-Priority AD
Converter Control
End
Compare
register
AD Monitor
Function control
Busy
AD start control
ADMOD4/5
TMRB/ I
2
S
ADS
HTSEL/HHTRGE
ITM/LAT
VREF
TSEL/HTRGE
Start
ADTRG
AN5 (PG5)
AN4 (PG4)
ADTRG
, AN3 (PG3)
AN2 (PG2)
AN1 (PG1)
AN0 (PG0)
Compare circuit
1&2
High-Priority AD
Conversion
Result Register
ADREGSPH/L
Internal dat
a b
u
s
Multiplexer
Summary of Contents for TLCS-900/H1 Series
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