Renesas Electronics /R7FA2A1AB /SDADC24 /STC1

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Interpret as STC1

15 1211 87 43 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (0000)CLKDIV0Reserved 0 (0)SDADLPM 0 (0000)VSBIAS0Reserved 0 (0)VREFSEL

CLKDIV=0000, VSBIAS=0000, VREFSEL=0, SDADLPM=0

Description

Startup Control Register 1

Fields

CLKDIV

SDADC24 reference clock division select

0 (others): Settings are prohibited.

0 (0000): SDADCCLK (no division)

1 (0001): SDADCCLK/2 (1/2)

2 (0010): SDADCCLK/3 (1/3)

3 (0011): SDADCCLK/4 (1/4)

4 (0100): SDADCCLK/5 (1/5)

5 (0101): SDADCCLK/6 (1/6)

6 (0110): SDADCCLK/8 (1/8)

7 (0111): SDADCCLK/12 (1/12)

8 (1000): SDADCCLK/16 (1/16).

Reserved

These bits are read as 000. The write value should be 000.

SDADLPM

A/D conversion operation mode select

0 (0): Normal A/D conversion mode: SDADC24 reference clock:4 MHz, Oversampling clock:1 MHz

1 (1): Low-power A/D conversion mode(1/8 of the clock in normal A/D conversion mode): SDADC24 reference clock:500 kHz,Oversampling clock: 125 kHz

VSBIAS

Reference voltage select

0 (others): Settings are prohibited.

0 (0000): 0.8 V

1 (0001): 1.0 V

2 (0010): 1.2 V

3 (0011): 1.4 V

4 (0100): 1.6 V

5 (0101): 1.8 V

6 (0110): 2.0 V

7 (0111): 2.2 V

15 (1111): 2.4 V (This voltage can be set only if VREFSEL = 1. When VREFSEL = 0, 2.2 V is set (rather than 2.4 V))

Reserved

These bits are read as 000. The write value should be 000.

VREFSEL

VREF mode select

0 (0): Internal VREF mode

1 (1): External VREF mode

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