C8051T603 View Datasheet(PDF) - Silicon Laboratories
Part Name
Description
MFG CO.
'C8051T603' PDF : 168 Pages View PDF
C8051T600/1/2/3/4/5/6
16. Special Function Registers
The direct-access data memory locations from 0x80 to 0xFF constitute the special function registers
(SFRs). The SFRs provide control and data exchange with the C8051T600/1/2/3/4/5/6's resources and
peripherals. The CIP-51 controller core duplicates the SFRs found in a typical 8051 implementation as well
as implementing additional SFRs used to configure and access the sub-systems unique to the
C8051T600/1/2/3/4/5/6. This allows the addition of new functionality while retaining compatibility with the
MCS-51™ instruction set. Table 16.1 lists the SFRs implemented in the C8051T600/1/2/3/4/5/6 device
family.
The SFR registers are accessed any time the direct addressing mode is used to access memory locations
from 0x80 to 0xFF. SFRs with addresses ending in 0x0 or 0x8 (e.g. P0, TCON, SCON0, IE, etc.) are bit-
addressable as well as byte-addressable. All other SFRs are byte-addressable only. Unoccupied
addresses in the SFR space are reserved for future use. Accessing these areas will have an indeterminate
effect and should be avoided. Refer to the corresponding pages of the data sheet, as indicated in
Table 16.2, for a detailed description of each register.
Table 16.1. Special Function Register (SFR) Memory Map
F8 CPT0CN PCA0L PCA0H PCA0CPL0 PCA0CPH0
F0
B
P0MDIN
EIP1
E8 ADC0CN PCA0CPL1 PCA0CPH1 PCA0CPL2 PCA0CPH2
E0 ACC
XBR0
XBR1
XBR2
IT01CF
EIE1
D8 PCA0CN PCA0MD PCA0CPM0 PCA0CPM1 PCA0CPM2
D0 PSW REF0CN
C8 TMR2CN
TMR2RLL TMR2RLH TMR2L TMR2H
C0 SMB0CN SMB0CF SMB0DAT ADC0GTL ADC0GTH ADC0LTL ADC0LTH
B8 IP
AMX0SL ADC0CF ADC0L ADC0H
B0
OSCXCN OSCICN OSCICL
A8 IE
A0
TOFFL TOFFH P0MDOUT
98 SCON0 SBUF0
CPT0MD
90
88 TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
80 P0
SP
DPL
DPH
0(8)
1(9)
2(A)
3(B)
4(C)
5(D)
6(E)
(bit addressable)
RSTSRC
REG0CN
CPT0MX
PCON
7(F)
Table 16.2. Special Function Registers
SFRs are listed in alphabetical order. All undefined SFR locations are reserved
Register
Address
Description
ACC
0xE0
Accumulator
ADC0CF
0xBC
ADC0 Configuration
ADC0CN
0xE8
ADC0 Control
ADC0GTH
0xC4
ADC0 Greater-Than Compare High
Page
72
44
46
47
Rev. 1.2
77
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