Rainbow Electronics AT89C5122 - Manual (Page 37)

37
AT8xC5122/23
4202E–SCR–06/06
Table 13. Timers SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
TH0 8Ch Timer/Counter 0 High byte TH0
TL0 8Ah Timer/Counter 0 Low byte TL0
TH1 8Dh Timer/Counter 1 High byte TH1
TL1 8Bh Timer/Counter 1 Low byte TL1
TCON 88h
Timer/Counter 0 and 1
control
TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0
TMOD 89h
Timer/Counter 0 and 1
Modes
GATE1 C/T1# M11 M01 GATE0 C/T0# M10 M00
Table 14. Watchdog SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
WDTRST A6h Watchdog Timer Reset WDTRST
WDTPRG A7h Watchdog Timer Program S2-0
Table 15. Serial I/O Ports 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 SBUF
SADEN B9h Slave Address Mask SADEN
SADDR A9h Slave Address SADDR
Table 16. Baud Rate Generator SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
BRL 9Ah Baud Rate Reload BRL
BDRCON 9Bh Baud Rate Control BRR TBCK RBCK SPD M0SRC
Table 17. Interrupt SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
IEN0 A8h Interrupt Enable Control 0 EA ES ET1 EX1 ET0 EX0
IEN1 B1h Interrupt Enable Control 1 EUSB ESCI ESPI (1) EKB (1)
IPL0 B8h
Interrupt Priority Control
Low 0
PSL PT1L PX1L PT0L PX0L