SH7041A datasheet(578/923 Pages) RENESAS

tên linh kiện	SH7041A

Giải thích chi tiết về linh kiện	Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

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15.2

15.2.1

A/D Data Registers A–H (ADDRA–ADDRH)

The ADDR are 16-bit read only registers for storing A/D conversion results. There are eight of

these registers, ADDRA through ADDRH.

The A/D converted data is 10-bit data which is sent to the ADDR for the corresponding converted

channel for storage. The lower 8 bits of the A/D converted data are transferred to and stored in the

lower byte (bits 7–0) of the ADDR, and the upper 2 bits are stored into the upper byte (bits 9, 8).

Bits 15–10 always read as 0. Data reads can be either byte or word. The upper 8 bits of the

converted data are transferred upon byte data reads. Additionally, buffered operation is possible by

combining ADDRA–ADDRD.

Table 15.3 shows the correspondence between the analog input channels and the ADDR.

The ADDR are initialized to H'0000 by power-on reset or in standby mode. Manual reset does not

initialize ADDR.

Bit:

—

AD9

AD8

Initial value:

/W:

RRRRRRRR

Bit:

AD7

AD6

AD5

AD4

AD3

AD2

AD1

AD0

Initial value:

/W:

RRRRRRRR

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