3886 datasheet(236/380 Pages) RENESAS

236 / 380 page

3886 Group User’s Manual

APPLICATION

2-119

2.7 A-D converter

An analog input signal from a sensor is converted to the digital value according to the relevant

registers setting shown by Figure 2.7.9. Figure 2.7.10 shows the control procedure for 8-bit read, and

Figure 2.7.11 shows the control procedure for 10-bit read.

Fig. 2.7.10 Control procedure for 8-bit read

Fig. 2.7.11 Control procedure for 10-bit read

ADCON (address 3416)

XXXX00002

Read out AD1 (address 3516)

ADCON (address 3416), bit3 ?

•P60/AN0 pin selected as analog input pin

•A-D conversion start

•Judgment of A-D conversion completion

•Read out of conversion result

q X: This bit is not used here. Set it to “0” or “1” arbitrarily.

ADCON (address 3416)

XXXX00002

Read out AD2 (address 3816)

ADCON (address 3416), bit3 ?

•P60/AN0 pin selected as analog input pin

•A-D conversion start

•Judgment of A-D conversion completion

•Read out of high-order digit (b9, b8) of conversion result

Read out AD1 (address 3516)

•Read out of low-order digit (b7 – b0) of conversion result

q X: This bit is not used here. Set it to “0” or “1” arbitrarily.

3886 Datasheet(PDF) 236 Page - Renesas Technology Corp