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Table 4.
Special function registers
* indicates SFRs that are bit addressable
Name
Description
SFR
Bit functions and addresses
address
MSB
E7
LSB
E0
Bit address
E0H
E6
E5
E4
-
E3
E2
E1
ACC*
Accumulator
AUXR
AUXR1
Auxiliary function register
Auxiliary function register 1
8EH
-
-
-
-
-
-
-
-
0
EXTRAM
AO
DPS
F0
A2H
GF2
F3
-
Bit address
F0H
F7
F6
F5
F4
F2
F1
B*
B register
CCAP0H
CCAP1H
CCAP2H
CCAP3H
CCAP4H
CCAP0L
CCAP1L
CCAP2L
CCAP3L
CCAP4L
CCAPM0
CCAPM1
CCAPM2
CCAPM3
CCAPM4
Module 0 Capture HIGH
Module 1 Capture HIGH
Module 2 Capture HIGH
Module 3 Capture HIGH
Module 4 Capture HIGH
Module 0 Capture LOW
Module 1 Capture LOW
Module 2 Capture LOW
Module 3 Capture LOW
Module 4 Capture LOW
Module 0 Mode
FAH
FBH
FCH
FDH
FEH
EAH
EBH
ECH
EDH
EEH
DAH
-
-
ECOM_0
ECOM_1
ECOM_2
ECOM_3
ECOM_4
DE
CAPP_0
CAPP_1
CAPP_2
CAPP_3
CAPP_4
DD
CAPN_0
CAPN_1
CAPN_2
CAPN_3
CAPN_4
DC
MAT_0
MAT_1
MAT_2
MAT_3
MAT_4
DB
TOG_0
TOG_1
TOG_2
TOG_3
TOG_4
DA
PWM_0
PWM_1
PWM_2
PWM_3
PWM_4
D9
ECCF_0
ECCF_1
ECCF_2
ECCF_3
ECCF_4
D8
Module 1 Mode
DBH
Module 2 Mode
DCH
-
Module 3 Mode
DDH
-
Module 4 Mode
DEH
-
Bit address
D8H
DF
CF
CCON*
CH
PCA Counter Control
PCA Counter HIGH
PCA Counter LOW
PCA Counter Mode
Data Pointer (2 B)
Data Pointer HIGH
Data Pointer LOW
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
F9H
CL
E9H
CMOD
DPTR
DPH
DPL
D9H
CIDL
WDTE
-
-
-
CPS1
CPS0
ECF
83H
82H
NXP [ NXP ]
