SH7041A datasheet(611/923 Pages) RENESAS

Part #	SH7041A

Description	Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

PDF	923 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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• Bit 5—A/D Start (ADST): Selects start/end of A/D conversion. A1 is maintained during A/D

conversion start. It is also possible to set a 1 by the A/D conversion trigger input pin

(ADTRG).

Bit 5:

ADST

Description

A/D conversion halted

(Initial value)

1. Single mode: Starts A/D conversion. Automatically clears to 0 when conversion of

the designated channel is complete

2. Scan mode: Starts A/D conversion. Continuous conversion until cleared to 0 by the

software

• Bit 4—Scan Mode (SCAN): Selects the A/D conversion mode from single mode and scan

mode. For operations during single/scan mode, see section 16.4, Operation. When switching

modes, proceed while ADST=0.

Bit 4:

SCAN

Description

Single mode

(Initial value)

Scan mode

• Bit 3—Clock Select (CKS): Sets the A/D conversion time. Proceed conversion time switch

while adst=0. Always set CKS=0 when operating frequency exceeds 20MHz.

Bit 3:

CKS

Description

Conversion time = 266 states (max)

(Initial value)

Conversion time = 134 states (max)

• Bit 2—Reserved bit: Bit 2 always reads 0. Furthermore, always write 0.

• Bits 1, 0—Channel select 1, 0 (CH1, CH0): Selects the analog input channel along with the

SCAN bit. Switch channels while ADST=0.

SH7041A Datasheet(PDF) 611 Page - Renesas Technology Corp