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C-51
REGISTERS
WSR
P4_DIR 1FDBH 7EH 00FBH 3FH 00DBH 1FH 00DBH
P4_MODE 1FD9H 7EH 00F9H 3FH 00D9H 1FH 00D9H
P4_PIN 1FDFH 7EH 00FFH 3FH 00DFH 1FH 00DFH
P4_REG 1FDDH 7EH 00FDH 3FH 00DDH 1FH 00DDH
PWM0_CONTROL 1FB0H 7DH 00F0H 3EH 00F0H 1FH 00B0H
PWM1_CONTROL 1FB2H 7DH 00F2H 3EH 00F2H 1FH 00B2H
PWM2_CONTROL 1FB4H 7DH 00F4H 3EH 00F4H 1FH 00B4H
SBUF_RX 1FB8H 7DH 00F8H 3EH 00F8H 1FH 00B8H
SBUF_TX 1FBAH 7DH 00FAH 3EH 00FAH 1FH 00BAH
SP_BAUD 1FBCH 7DH 00FCH 3EH 00FCH 1FH 00BCH
SP_CON 1FBBH 7DH 00FBH 3EH 00FBH 1FH 00BBH
SP_STATUS 1FB9H 7DH 00F9H 3EH 00F9H 1FH 00B9H
T1CONTROL 1F90H 7CH 00F0H 3EH 00D0H 1FH 0090H
T2CONTROL 1F94H 7CH 00F4H 3EH 00D4H 1FH 0094H
TIMER1
†
1F92H 7CH 00F2H 3EH 00D2H 1FH 0092H
TIMER2
†
1F96H 7CH 00F6H 3EH 00D6H 1FH 0096H
Table C-18. WSR Settings and Direct Addresses for Windowable SFRs (Continued)
Register
Mnemonic
Memory
Location
32-byte Windows
(00E0–00FFH)
64-byte Windows
(00C0–00FFH)
128-byte Windows
(0080–00FFH)
WSR
Direct
Address
WSR
Direct
Address
WSR
Direct
Address
†
Must be addressed as a word.