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5.
Table of SFRs
The special function registers (SFRs) include the I/O ports and peripheral control registers
allocated to the 4-Kbyte address space from 000000H to 000FFFH.
(1) I/O port
(2) I/O port control
(3) Interrupt control
(4) Chip select/wait control
(5) Clock gear
(6) 8-bit timer
(7) 16-bit timer
(8) UART/serial channel
(9) AD converter
(10) Watchdog timer
(11) Multi vector controller
Table layout
Symbol
Note: "Prohibit RMW" in the a table means that you cannot use RMW instructions on these register.
Example: When setting bit0 only of the register PxCR, the instruction "SET 0, (PxCR)" cannot be
used. The LD (Transfer) instruction must be used to write all eight bits.
Read/Write
R/W: Both read and write are possible.
R:
Only read is possible.
W:
Only write is possible.
W*: Both read and write are possible (when this bit is read as 1).
Prohibit RMW: Read-modify-write instructions are prohibited. (The EX, ADD, ADC, BUS,
R/W*:
Name
Address
7
SBC, INC, DEC, AND, OR, XOR, STCF, RES, SET, CHG, TSET, RLC, RRC,
RL, RR, SLA, SRA, SLL, SRL, RLD, and RRD instruction are
read-modify-write instructions.)
Read-modify-write is prohibited when controlling the pull-up resistor.
91C829-175
6
1
0
TMP91C829
Bit symbol
Read/Write
Initial value after Reset
Remarks
2006-03-15
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