AT89C51AC2 查看數據表（PDF） - Atmel Corporation

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AT89C51AC2

Enhanced 8-bit Microcontroller with 32 KB Flash Memory

Atmel Corporation 

A/T89C51AC2

Table 5. Timers SFRs (Continued)

Mnemonic Add Name

7

T2CON

C8h

Timer/Counter 2

control

TF2

T2MOD

C9h

Timer/Counter 2

Mode

–

Timer/Counter 2

RCAP2H CBh Reload/Capture High

–

byte

Timer/Counter 2

RCAP2L

CAh Reload/Capture Low

–

byte

WDTRST

A6h

Watchdog Timer

Reset

–

WDTPRG

A7h

Watchdog Timer

Program

–

6

5

4

3

2

EXF2

RCLK

TCLK

EXEN2

TR2

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

S2

1

C/T2#

0

CP/RL2#

T2OE

DCEN

–

–

–

–

–

–

S1

S0

Table 6. Serial I/O Port SFRs

Mnemonic Add Name

7

6

5

4

3

2

1

0

SCON

98h Serial Control

FE/SM0

SM1

SM2

REN

TB8

RB8

TI

RI

SBUF

99h Serial Data Buffer

–

–

–

–

–

–

–

–

SADEN

B9h Slave Address Mask

–

–

–

–

–

–

–

–

SADDR

A9h Slave Address

–

–

–

–

–

–

–

–

Table 7. PCA SFRs

Mnemonic Add Name

7

6

5

4

3

2

1

0

CCON

D8h PCA Timer/Counter Control

CF

CR

–

CCF4

CCF3

CCF2

CCF1

CCF0

CMOD D9h PCA Timer/Counter Mode

CIDL

WDTE

–

–

–

CPS1

CPS0

ECF

CL

E9h PCA Timer/Counter Low byte

–

–

–

–

–

–

–

–

CH

F9h PCA Timer/Counter High byte

–

–

–

–

–

–

–

–

CCAPM0

CCAPM1

CCAPM2

CCAPM3

CCAPM4

DAh PCA Timer/Counter Mode 0

DBh PCA Timer/Counter Mode 1

DCh PCA Timer/Counter Mode 2

DDh PCA Timer/Counter Mode 3

DEh PCA Timer/Counter Mode 4

ECOM0 CAPP0 CAPN0 MAT0

ECOM1 CAPP1 CAPN1 MAT1

–

ECOM2 CAPP2 CAPN2 MAT2

ECOM3 CAPP3 CAPN3 MAT3

ECOM4 CAPP4 CAPN4 MAT4

TOG0

TOG1

TOG2

TOG3

TOG4

PWM0

PWM1

PWM2

PWM3

PWM4

ECCF0

ECCF1

ECCF2

ECCF3

ECCF4

CCAP0H

CCAP1H

CCAP2H

CCAP3H

CCAP4H

FAh PCA Compare Capture Module 0 H CCAP0H7 CCAP0H6 CCAP0H5 CCAP0H4 CCAP0H3 CCAP0H2 CCAP0H1 CCAP0H0

FBh PCA Compare Capture Module 1 H CCAP1H7 CCAP1H6 CCAP1H5 CCAP1H4 CCAP1H3 CCAP1H2 CCAP1H1 CCAP1H0

FCh PCA Compare Capture Module 2 H CCAP2H7 CCAP2H6 CCAP2H5 CCAP2H4 CCAP2H3 CCAP2H2 CCAP2H1 CCAP2H0

FDh PCA Compare Capture Module 3 H CCAP3H7 CCAP3H6 CCAP3H5 CCAP3H4 CCAP3H3 CCAP3H2 CCAP3H1 CCAP3H0

FEh PCA Compare Capture Module 4 H CCAP4H7 CCAP4H6 CCAP4H5 CCAP4H4 CCAP4H3 CCAP4H2 CCAP4H1 CCAP4H0

11

4127H–8051–02/08

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