GMS90C320

12

OCT. 2000 Ver 1.2

Table 2

Special Function Registers - Functional Blocks

Block

Symbol

Name

Address

Content

after Reset

CPU

ACC

B

DPH

DPL

PSW

SP

Accumulator

B-Register

Data Pointer, High Byte

Data Pointer, Low Byte

Program Status Word Register

Stack Pointer

1)

Bit-addressable Special Function Registers

Interrupt System

IE

IP

Interrupt Enable Register

Interrupt Priority Register

2)

This special function register is listed repeatedly since some bits of it also belong to other functional blocks

Ports

P0

P1

P2

P3

Port 0

Port 1

Port 2

Port 3

Serial Channels

PCON

SBUF

SCON

Power Control Register

Serial Channel Buffer Register

Serial Channel 0 Control Register

3)

X means that the value is indeterminate and the location is reserved

Timer 0 / Timer 1

TCON

TH0

TH1

TL0

TL1

TMOD

Timer 0/1 Control Register

Timer 0, High Byte

Timer 1, High Byte

Timer 0, Low Byte

Timer 1, Low Byte

Timer Mode Register

Timer 2

T2CON

T2MOD

RC2H

RC2L

TH2

TL2

Timer 2 Control Register

Timer 2 Mode Register

Timer 2 Reload Capture Register, High Byte

Timer 2 Reload Capture Register, Low Byte

Timer 2, High Byte

Timer 2, Low Byte

Power Saving

Modes

PCON

Power Control Register