Datasheet

538
15.1.2 Block Diagram
Figure 15.1 is the block diagram of the high speed A/D converter.
+
−
AV
cc
AV
ref
*
AV
ss
AN0
AN1
AN2
AN3
AN4
AN5
AN6
ADTRG
AN7
D/A
conversion
circuit
S&H A
S&H B
ADDRA
ADDRB
ADDRC
ADDRD
ADDRE
ADDRF
ADDRG
ADDRH
ADCR ADCSR
Internal
data bus
Bus I/F
Interrupt signal
ADI
8-bit timer or
MTU conversion
start trigger
CMP
Module internal data bus
Control logic
Multiplexer
ADCR:
ADSCR:
ADDRA:
ADDRB:
ADDRC:
ADDRD:
A/D control register
A/D control status register
A/D data register A
A/D data register B
A/D data register C
A/D data register D
CMP:
S&H:
ADDRE:
ADDRF:
ADDRG:
ADDRH:
Comparator array
Sample and hold circuit
A/D data register E
A/D data register F
A/D data register G
A/D data register H
Note: * SH7043 only
Figure 15.1 High Speed A/D Converter Block Diagram
15.1.3 Pin Configuration
Table 15.1 shows the input pins used by the high speed A/D converter.
The AV
cc
and AV
ss
pins are for the A/D converter internal analog section power supply. The
AV
ref
pin is for the A/D conversion standard voltage.