SN8A1702AX datasheet(44/145 Pages) SONIX

44 / 145 page

SN8P1700

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

SONiX TECHNOLOGY CO., LTD

Page 44

Revision 1.94

PROGRAM COUNTER

The program counter (PC) is a 12-bit binary counter separated into the high-byte 4 bits and the low-byte 8 bits. This

counter is responsible for pointing a location in order to fetch an instruction for kernel circuit. Normally, the program

counter is automatically incremented with each instruction during program execution.

Besides, it can be replaced with specific address by executing CALL or JMP instruction. When JMP or CALL

instruction is executed, the destination address will be inserted to bit 0 ~ bit 11.

PC Initial value = xxxx 0000 0000 0000

Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9

Bit 8

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PCH

PCL

PCH Initial value = xxxx 0000

0CFH

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PCH

PC11

PC10

PC9

PC8

R/W

PCL Initial value = 0000 0000

0CEH

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PCL

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

R/W

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