Rainbow-electronics AT89C5122 Manual de usuario descargar pdf (Pagina 36)

AT8xC5122/23

4202E–SCR–06/06

SFR’s Description

Note: 1. Only for AT8xC5122

Table 10. C51 Core SFRs

MnemonicAddName 76543210

ACC E0h Accumulator ACC

B F0h B Register B

PSW D0h Program Status Word CY AC F0 RS1 RS0 OV F1 P

SP 81h Stack Pointer SP

DPL 82h

Data Pointer Low byte (LSB

of DPTR)

DPL

DPH 83h

Data Pointer High byte

(MSB of DPTR)

DPH

Table 11. Clock SFRs

MnemonicAddName 76 5 43210

PCON 87h Power Controller SMOD1 SMOD0

POF GF1 GF0 PD IDL

CKCON0 8Fh Clock Controller 0

WDX2 SIX2 T1X2 T0X2 X2

CKCON1 AFh Clock Controller 1

SPIX2

CKSEL 85h Clock Selection

CKS

CKRL 97h Clock Reload Register

CKREL 3-0

PLLCON A3h PLL Controller Register

EXT48 PLLEN PLOCK

PLLDIV A4h PLL Divider register R3-0 N3-0

AUXR 8Eh Auxiliary Register 0 DPU

XRS0 EXTRAM A0

AUXR1 A2h Auxiliary Register 1

ENBOOT

(1)

GF3 DPS

RCON

(1)

D1h

CRAM memory

Configuration

RPS

Table 12. I/O Port SFRs

Mnemonic Add Name 7 6 5 4 3 2 1 0

(1)

80h Port 0 P0

P1 90h Port 1 P1

(1)

A0h Port 2 P2

P3 B0h Port 3 P3

(1)

C0h Port 4 P4

P5 E8h Port 5 P5 (only P5.0 for AT8xC5122)

PMOD0 91h Port Mode Register 0 P3C1 P3C0 P2C1

(1)

P2C0

(1)

CPRESRES - P0C1

(1)

P0C0

(1)

PMOD1 84h Port Mode Register 1 P5HC1

(1)

P5HC0

(1)

P5MC1

(1)

P5MC0

(1)

P5LC1 P5LC0 P4C1

(1)

P4C0

(1)

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 212 213

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Rainbow-electronics AT89C5122 Manual de usuario Pagina 36

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