SH7261 datasheet(1051/1348 Pages) RENESAS

1051 / 1348 page

Section 22 A/D Converter (ADC)

Rev. 2.00 Sep. 07, 2007 Page 1019 of 1312

REJ09B0320-0200

Bit

Bit Name

Initial

Value

R/W

Description

5 to 3

MDS[2:0]

000

R/W

Multi-scan Mode

These bits select the operating mode for A/D

conversion.

0xx: Single mode

100: Multi mode: A/D conversion on 1 to 4 channels

101: Multi mode: A/D conversion on 1 to 8 channels

110: Scan mode: A/D conversion on 1 to 4 channels

111: Scan mode: A/D conversion on 1 to 8 channels

Channel Select

These bits and the MDS bits in ADCSR select the

analog input channels.

MDS2 = 0

MDS2 = 1,

MDS0 = 0

MDS2 = 1,

MDS0 = 1

000: AN0

001: AN1

001: AN0, AN1

010: AN2

010: AN0 to AN2

011: AN3

011: AN0 to AN3

100: AN4

100: AN0 to AN4

101: AN5

101: AN4, AN5

101: AN0 to AN5

110: AN6

110: AN4 to AN6

110: AN0 to AN6

111: AN7

111: AN4 to AN7

111: AN0 to AN7

2 to 0

CH[2:0]

000

R/W

Note: These bits must be set so that ADCSR_0 and

ADCSR_1 do not have the same analog inputs.

[Legend]

Don't care

Notes: 1. Only 0 can be written to clear the flag after 1 is read.

2. To satisfy the absolute accuracy of the A/D converter characteristics, set a value

greater than the minimum conversion time.

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