SN8P2711A
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 33
Version 0.1
2.1.4.8 R
REGISTERS
R register is an 8-bit buffer. There are two major functions of the register.
z
Can be used as working register
z
For store high-byte data of look-up table
(MOVC instruction executed, the high-byte data of specified ROM address will be stored in R register and the
low-byte data will be stored in ACC).
082H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R
RBIT7 RBIT6 RBIT5 RBIT4 RBIT3 RBIT2 RBIT1 RBIT0
Read/Write R/W
R/W
R/W R/W R/W R/W R/W R/W
After
reset
- - - - - - - -
Note: Please refer to the “LOOK-UP TABLE DESCRIPTION” about R register look-up table application.