SH7055S Datasheet, PDF (621/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Section 17 A/D Converter
17.1 Overview
The SH7055SF includes a 10-bit successive-approximation A/D converter, with software selection
of up to 32 analog input channels.
The A/D converter is composed of three independent modules, A/D, A/D1, and A/D2. A/D0 and
A/D1 each comprise three groups, while A/D2 comprises two groups.
Module
A/D0
A/D1
A/D2
Analog Groups
Analog group 0
Analog group 1
Analog group 2
Analog group 3
Analog group 4
Analog group 5
Analog group 6
Analog group 7
Channels
AN0–AN3
AN4–AN7
AN8–AN11
AN12–AN15
AN16–AN19
AN20–AN23
AN24–AN27
AN28–AN31
17.1.1 Features
The features of the A/D converter are summarized below.
• 10-bit resolution
32 input channels (A/D0: 12 channels, A/D1: 12 channels, A/D2: 8 channels)
• High-speed conversion
Conversion time: minimum 13.4 µs per channel (when φ = 40 MHz)
• Two conversion modes
 Single mode: A/D conversion on one channel
 Scan mode: cotinuous scan mode, single-cycle scan mode (AN0–AN3, AN4–AN7, AN8–
AN11, AN12–AN15, AN16–AN19, AN20–AN23, AN24–AN27, AN28–AN31)
Continuous conversion on 1 to 12 channels (A/D0)
Continuous conversion on 1 to 12 channels (A/D1)
Continuous conversion on 1 to 8 channels (A/D2)
• Thirty-two 10-bit A/D data registers
A/D conversion results are transferred for storage into data registers corresponding to the
channels.
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