3823 datasheet(39/76 Pages) RENESAS

Part #	3823

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

PDF	76 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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39 / 76 page

Rev.2.02

Jun 19, 2007

page 39 of 73

REJ03B0146-0202

3823 Group

Fig. 34 A/D conversion register reading

Fig. 35 A/D converter block diagram

AD conversion

high-order register

Data bus

A/D control circuit

Resistor ladder

AVSS

VREF

Comparator

ADT/A/D interrupt

request

AD control register

P60/SIN2/AN0

P61/AN1

P62/AN2

P63/AN3

P64/AN4

P65/AN5

P66/AN6

P67/AN7

P57/ADT

(Address 003516)

(Address 003616)

AD conversion

low-order register

Conversion mode selection bit

AD conversion speed selection bit

AD conversion low-order register

(Address 003616) ADL

AD conversion high-order register

(Address 003516) ADH

b1 b0

• 10 bit reading (Read address 003516 before 003616)

b9 b8

b7 b6 b5 b4 b3 b2

(High-order)

(low-order)

Note: The bit 5 to bit 3 of address 003616 become "0" at reading.

• 8 bit reading (Read only address 003516)

b7 b6

b5b4b3b2b1b0

(Address 003516)

3823 Datasheet(PDF) 39 Page - Renesas Technology Corp

3823 Datasheet(HTML) 39 Page - Renesas Technology Corp

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