M38045F2HKP datasheet(257/387 Pages) RENESAS

257 / 387 page

2-133

APPLICATION

2.8 D/A converter

Rev.1.00 Jan 14, 2005

REJ09B0212-0100Z

3804 Group (Spec.H)

2.8.2 Relevant registers

Fig. 2.8.2 Structure of Port P5 direction register

Fig. 2.8.3 Structure of AD/DA control register

Port P3 direction register

b7 b6 b5 b4 b3 b2 b1 b0

Port P3 direction register

(P3D: address 000716)

0 : Port P30 input mode

1 : Port P30 output mode

Name

Functions

At reset R W

0 : Port P32 input mode

1 : Port P32 output mode

0 : Port P33 input mode

1 : Port P33 output mode

0 : Port P34 input mode

1 : Port P34 output mode

0 : Port P35 input mode

1 : Port P35 output mode

0 : Port P36 input mode

1 : Port P36 output mode

0 : Port P37 input mode

1 : Port P37 output mode

Port P3 direction

0 : Port P31 input mode

1 : Port P31 output mode

AD/DA control register

b7 b6 b5 b4 b3 b2 b1 b0

AD/DA control register

(ADCON: address 003416)

Name

Functions

At reset R W

Analog input pin

selection bits 1

b2 b1 b0

0 0 0: P60/AN0 or P00/AN8

0 0 1: P61/AN1 or P01/AN9

0 1 0: P62/AN2 or P02/AN10

0 1 1: P63/AN3 or P03/AN11

1 0 0: P64/AN4 or P04/AN12

1 0 1: P65/AN5 or P05/AN13

1 1 0: P66/AN6 or P06/AN14

1 1 1: P67/AN7 or P07/AN15

Analog input pin

selection bit 2

0: AN0 to AN7 side

1: AN8 to AN15 side

AD conversion

completion bit

0: Conversion in progress

1: Conversion completed

DA1 output enable

bit

0: DA1 output disabled

1: DA1 output enabled

DA2 output enable

bit

0: DA2 output disabled

1: DA2 output enabled

5 Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

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