Rainbow-electronics AT89C5131 Manual do Utilizador descarregar pdf (Página 12)

AT89C5131

4136A–USB–03/03

SFR Mapping The Special Function Registers (SFRs) of the AT89C5131 fall into the following

categories:

• C51 core registers: ACC, B, DPH, DPL, PSW, SP

• I/O port registers: P0, P1, P2, P3, P4

• Timer registers: T2CON, T2MOD, TCON, TH0, TH1, TH2, TMOD, TL0, TL1, TL2,

RCAP2L, RCAP2H

• Serial I/O port registers: SADDR, SADEN, SBUF, SCON

• PCA (Programmable Counter Array) registers: CCON, CMOD, CCAPMx, CL, CH,

CCAPxH, CCAPxL (x: 0 to 4)

• Power and clock control registers: PCON

• Hardware Watchdog Timer registers: WDTRST, WDTPRG

• Interrupt system registers: IE0, IPL0, IPH0, IE1, IPL1, IPH1

• Keyboard Interface registers: KBE, KBF, KBLS

• LED register: LEDCON

• Serial Port Interface (SPI) registers: SPCON, SPSTA, SPDAT

• USB registers: Uxxx (17 registers)

• PLL registers: PLLCON, PLLDIV0

• BRG (Baud Rate Generator) registers: BRL, BDRCON

• Flash register: FCON (FCON access is reserved for the Flash API and ISP

software)

• EEPROM register: EECON

• Clock Prescaler register: CKRL

• 32 kHz Sub Clock Oscillator registers: CKSEL

• Others: AUXR, AUXR1, CKCON0, CKCON1

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