SN8P2624
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD Page 32 Version 0.3
2.1.4.9 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.