R01UH0822EJ0100 Rev.1.00
Page 810 of 1041
Jul 31, 2019
RX13T Group
26. 12-Bit A/D Converter (S12ADF)
Figure 26.1
Block Diagram of 12-Bit A/D Converter (Unit 0)
lists the input/output pins of the 12-bit A/D converter.
These units can be operated independently. The input channels of S12AD can be divided into three groups for operation.
A programmable gain amplifier (PGA) is included in AN000 to AN002.
Successive
ap
pro
xi
m
at
io
n
register
Analog multipl
ex
er
12-bit D/A
A/D control register
Bus interface
Control circuit
(including decoder)
A/D data register
Sample and
hold circuit
AVCC0
AVSS0
AN007
AN003
Interrupt signal
(S12ADI, GBADI, GCADI)
Asynchronous trigger
(ADTRG0#)
Comparator
AN002
AN001
AN000
Comparator C
Programmable gain
amplifier
Programmable gain
amplifier
Programmable gain
amplifier
Sample
and hold
circuit
Sample
and hold
circuit
Sample
and hold
circuit
S12AD
Synchronous trigger
(MTU)
Internal reference
voltage