HD404374FT datasheet(106/161 Pages) RENESAS

Part #	HD404374FT

Description	Low-Voltage AS Microcomputers with On-Chip A/D Converter

PDF	161 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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106 / 161 page

HD404374/HD404384/HD404389/HD404082/HD404084 Series

Rev.5.00, Sep.11.2003, page 106 of 161

Bit

Read/Write

Initial value on reset

Bit name

R/W

DTON

R/W

ADSF

R/W

WDON

R/W

LSON

A/D start flag (ADSF: $020,2)

DTON (see low-power mode section)

WDON (see timer section)

LSON (see low-power mode section)

A/D start flag (ADSF)

A/D conversion starts

Indicates end of A/D conversion

Figure 65 A/D Start Flag (ADSF)

A/D data register (ADRL: $029, ADRM: $02A, ADRU: $02B):

The A/D data register is a read-only register consisting of a middle 4 bits and lower 2 bits. This register is

not cleared by a reset. Also, data read during A/D conversion is not guaranteed. At the end of A/D

conversion, the resulting 10-bit data is stored in this register, and is held until the next conversion operation

starts (figures 66, 67, 68, and 69).

MSB

LSB

bit9

bit0

ADRU : $02B

ADRM : $02A

ADRL : $029

Figure 66 A/D Data Register

HD404374FT Datasheet(PDF) 106 Page - Renesas Technology Corp