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Table 2: Special Function Registers - Functional Blocks
Block
Symbol
CPU
ACC
B
DPH
DPL
PSW
SP
A/D-
ADCON
Converter
ADDAT
DAPR
Interrupt
EN0
System
IEN1
IP0
IP1
IRCON
TCON
T2CON
Compare/
CCEN
Capture-
CCH1
Unit
CCH2
(CCU)
CCH3
CCL1
CCL2
CCL3
CRCH
CRCL
TH2
TL2
T2CON
1)
Bit-addressable special function registers
2)
This special function register is listed repeatedly since some bits of it also belong
to other functional blocks.
3)
X means that the value is indeterminate and the location is reserved
Semiconductor Group
Name
Accumulator
B-Register
Data Pointer, High Byte
Data Pointer, Low Byte
Program Status Word Register
Stack Pointer
A/D Converter Control Register
A/D Converter Data Register
D/A Converter Program Register
Interrupt Enable Register 0
Interrupt Enable Register 1
Interrupt Priority Register 0
Interrupt Priority Register 1
Interrupt Request Control Register
2)
Timer Control Register
2)
Timer 2 Control Register
Comp./Capture Enable Reg.
Comp./Capture Reg. 1, High Byte
Comp./Capture Reg. 2, High Byte
Comp./Capture Reg. 3, High Byte
Comp./Capture Reg. 1, Low Byte
Comp./Capture Reg. 2, Low Byte
Comp./Capture Reg. 3, Low Byte
Com./Rel./Capt. Reg. High Byte
Com./Rel./Capt. Reg. Low Byte
Timer 2, High Byte
Timer 2, Low Byte
Timer 2 Control Register
Address
0E0
0F0
83
82
0D0
81
0D8
0D9
0DA
0A8
0B8
0A9
0B9
0C0
88
0C8
*
0C1
0C3
0C5
0C7
0C2
0C4
0C6
0CB
0CA
0CD
0CC
0C8
233
Device Specifications
Contents
after Reset
1)
00
H
H
1)
00
H
H
00
H
H
00
H
H
1)
00
H
H
07
H
H
1)
00X0 0000
H
00
H
H
00
H
H
1)
00
H
H
1)
00
H
H
00
H
H
X000 0000
H
1)
XX00 0000
H
1)
00
H
H
1)
00
H
H
00
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
00
H
H
1)
00
H
H
2)
B
2)
B
3)
B
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