SN8A1702AX datasheet(48/145 Pages) SONIX

48 / 145 page

SN8P1700

8-bit micro-controller build-in 12-bit ADC

SONiX TECHNOLOGY CO., LTD

Page 48

Revision 1.94

TO ACCESS DATA in RAM BANK 0

In the RAM bank 0, this area memory can be read/written by these three access methods.

Example 1: To use RAM bank0 dedicate instruction (Such as B0xxx instruction).

B0MOV

A, 12H

; To move content from location 12H of RAM bank 0 to ACC

Example 2: To use directly addressing mode (Through RBANK register).

B0MOV

RBANK, #00H

; To set RAM bank = 0

MOV

A, 12H

; To move content from location 12H of RAM bank 0 to ACC

Example 3: To use indirectly addressing mode with @YZ register.

CLR

; To clear Y register for accessing RAM bank 0.

B0MOV

Z, #12H

; To set an immediate data 12H into Z register.

B0MOV

A, @YZ

; Use data pointer @YZ reads a data from RAM location

; 012H into ACC.

TO ACCESS DATA in RAM BANK 1

In the RAM bank 1, this area memory can be read/written by these two access methods.

Example 1: To use directly addressing mode (Through RBANK register).

B0MOV

RBANK, #01H

; To set RAM bank = 1

MOV

A, 12H

; To move content from location 12H of RAM bank 0 to ACC

Example 2: To use indirectly addressing mode with @YZ register.

MOV

A, #01H

B0MOV

Y, A

; To set Y = 1 for accessing RAM bank 1.

B0MOV

Z, #12H

; To set an immediate data 12H into Z register.

B0MOV

A, @YZ

; Use data pointer @YZ reads a data from RAM location

; 012H into ACC.

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