参数资料
型号: C8051F226R
厂商: Silicon Laboratories Inc
文件页数: 112/146页
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
标准包装: 1
系列: C8051F2xx
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 32
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 32x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-TQFP
包装: 剪切带 (CT)
其它名称: 336-1010-1
C8051F2xx
68
Rev. 1.6
9.3.
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 CIP-51's resources and peripherals. The
CIP-51 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 MCU. This allows the addition of new
functionality while retaining compatibility with the MCS-51 instruction set. Table 9.3 lists the SFRs imple-
mented in the CIP-51 System Controller.
The SFR registers are accessed anytime 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, P1, SCON, 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 indetermi-
nate effect and should be avoided. Refer to the corresponding pages of the datasheet, as indicated in
Table 9.3, for a detailed description of each register.
Notes:
1. C8051F230/1/6 Do not have these registers.
2. C8051F221/231 Does not have this register (32 pin package).
3. On the C8051F206 and C8051F226/236 only.
4. On the C8051F206 only (12-bit ADC)
Table 9.2. Special Function Register Memory Map
F8
SPI0CN
WDTCN
F0
B
P0MODE
P1MODE
P2MODE
P3MODE2
EIP1
EIP2
E8
ADC0CN1
RSTSRC
E0
ACC
PRT0MX
PRT1MX
PRT2MX
EIE1
EIE2
D8
D0
PSW
REF0CN
C8
T2CON
RCAP2L
RCAP2H
TL2
TH2
C0
ADC0GTL4 ADC0GTH1 ADC0LTL4 ADC0LTH1
B8
IP
AMX0SL1
ADC0CF1
ADC0L4
ADC0H1
B0
P3
OSCXCN
OSCICN
FLSCL
FLACL
A8
IE
SWCINT
EMI0CN3
A0
P2
PRT0CF
PRT1CF
PRT2CF
PRT3CF
98
SCON
SBUF
SPI0CFG
SPI0DAT
SPI0CKR
CPT0CN
CPT1CN
90
P1
88
TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
PSCTL
80
P0
SP
DPL
DPH
PCON
0(8)
Bit Addressable
1(9)
2(A)
3(B)
4(C)
5(D)
6(E)
7(F)
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