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Intel 80C196NU User Manual

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8XC196NP, 80C196NU USER’S MANUAL
5-8
Table 5-5.  Peripheral SFRs 
Reserved Locations
EPORT SFRs
Address
High (Odd) Byte
Low (Even) Byte
Address
High (Odd) Byte
Low (Even) Byte
1FEEH
Reserved
Reserved
††
1FE6H
EP_PIN
Reserved
1FECH
Reserved
Reserved
††
1FE4H
EP_REG
Reserved
1FEAH
Reserved
Reserved
††
1FE2H
EP_DIR
Reserved
1FE8H
Reserved
Reserved
††
1FE0H
EP_MODE
Reserved
Ports 1–4 SFRs
Serial I/O and PWM SFRs
Address
High (Odd) Byte
Low (Even) Byte
Address
High (Odd) Byte
Low (Even) Byte
1FDEH
P4_PIN
P3_PIN
1FBEH
Reserved
Reserved
1FDCH
P4_REG
P3_REG
1FBCH
SP_BAUD (H)
SP_BAUD (L)
1FDAH
P4_DIR
P3_DIR
1FBAH
SP_CON
SBUF_TX
1FD8H
P4_MODE
P3_MODE
1FB8H
SP_STATUS
SBUF_RX
1FD6H
P2_PIN
P1_PIN
1FB6H
Reserved
CON_REG0
1FD4H
P2_REG
P1_REG
1FB4H
Reserved
PWM2_CONTROL
1FD2H
P2_DIR
P1_DIR
1FB2H
Reserved
PWM1_CONTROL
1FD0H
P2_MODE
P1_MODE
1FB0H
Reserved
PWM0_CONTROL
1FCEH
Reserved
Reserved
1FAEH
Reserved
Reserved
• • •
• • •
• • •
• • •
• • •
• • •
1FC0H
Reserved
Reserved
1FA0H
Reserved
Reserved
EPA, Timer 1, and Timer 2 SFRs 
Chip-select SFRs
Address
High (Odd) Byte
Low (Even) Byte
Address
High (Odd) Byte
Low (Even) Byte
1F9EH
Reserved
EPA_PEND 
†††
†
1F6EH
Reserved
Reserved
1F9CH
Reserved
EPA_MASK
†
1F6CH
Reserved
BUSCON5
1F9AH
Reserved
Reserved
†
1F6AH
ADDRMSK5 (H)
ADDRMSK5 (L)
1F98H
Reserved
Reserved
1F68H
ADDRCOM5 (H)
ADDRCOM5 (L)
†
1F96H
TIMER2 (H)
TIMER2 (L)
†
1F66H
Reserved
Reserved
1F94H
Reserved
T2CONTROL
†
1F64H
Reserved
BUSCON4
†
1F92H
TIMER1 (H)
TIMER1 (L)
†
1F62H
ADDRMSK4 (H)
ADDRMSK4 (L)
1F90H
Reserved
T1CONTROL
1F60H
ADDRCOM4 (H)
ADDRCOM4 (L)
†
1F8EH
EPA3_TIME (H)
EPA3_TIME (L)
1F5EH
Reserved
Reserved
†
1F8CH
EPA3_CON (H)
EPA3_CON (L)
1F5CH
Reserved
BUSCON3
†
1F8AH
EPA2_TIME (H)
EPA2_TIME (L)
1F5AH
ADDRMSK3 (H)
ADDRMSK3 (L)
1F88H
Reserved
EPA2_CON
1F58H
ADDRCOM3 (H)
ADDRCOM3 (L)
†
1F86H
EPA1_TIME (H)
EPA1_TIME (L)
1F56H
Reserved
Reserved
†
1F84H
EPA1_CON (H)
EPA1_CON (L)
1F54H
Reserved
BUSCON2
†
1F82H
EPA0_TIME (H)
EPA0_TIME (L)
1F52H
ADDRMSK2 (H)
ADDRMSK2 (L)
1F80H
Reserved
EPA0_CON
1F50H
ADDRCOM2 (H)
ADDRCOM2 (L)
†
 
Must be addressed as a word.
††
  For the 8XC196NP, these are memory-mapped locations. They must be addressed with indirect or 
indexed instructions, and they cannot be windowed.
†††
  The EPA_PEND register was called EPA_STAT in previous documentation for the 8XC196NP.
††††
 The 8XC196NP can be identified by its signature word, 80EFH, at locations 1F46–1F47H. The 
8XC196NU has no signature word; locations 1F46–1F47H are reserved.