C8051F930-TB Silicon Laboratories Inc, C8051F930-TB Datasheet - Page 127
![BOARD TARGET/PROTO W/C8051F930](/photos/9/25/92560/c8051f930-tb_sml.jpg)
C8051F930-TB
Manufacturer Part Number
C8051F930-TB
Description
BOARD TARGET/PROTO W/C8051F930
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F930-TB
Contents
Board
Processor To Be Evaluated
C8051F930
Processor Series
C8051F9xx
Data Bus Width
8 bit
Interface Type
I2C, UART, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
0.9 V to 3.6 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F930
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1472
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11.1. SFR Paging
To accommodate more than 128 SFRs in the 0x80 to 0xFF address space, SFR paging has been
implemented. By default, all SFR accesses target SFR Page 0x0 to allow access to the registers listed in
Table 11.1. During device initialization, some SFRs located on SFR Page 0xF may need to be accessed.
Table 11.2 lists the SFRs accessible from SFR Page 0x0F. Some SFRs are accessible from both pages,
including the SFRPAGE register. SFRs accessible only from Page 0xF are in bold .
The following procedure should be used when accessing SFRs from Page 0xF:
F8
F0
E8
E0
D8
D0
C8
C0
B8
B0
A8
A0
98
90
88
80
(bit addressable)
PSW
ACC
0(8)
P2
P1
P0
IE
Step 1. Save the current interrupt state (EA_save = EA).
Step 2. Disable Interrupts (EA = 0).
Step 3. Set SFRPAGE = 0xF.
Step 4. Access the SFRs located on SFR Page 0xF.
Step 5. Set SFRPAGE = 0x0.
Step 6. Restore interrupt state (EA = EA_save).
B
Table 11.2. Special Function Register (SFR) Memory Map (Page 0xF)
CRC0DAT
CLKSEL
1(9)
SP
ADC0PWR
CRC0CN
DPL
2(A)
CRC0IN
DPH
3(B)
Rev. 1.1
P0DRV
4(C)
C8051F93x-C8051F92x
CRC0FLIP
ADC0TK
P1DRV
TOFFL
5(D)
CRC0AUTO CRC0CNT
P2DRV
TOFFH
EIP1
EIE1
6(E)
SFRPAGE
PCON
EIP2
EIE2
7(F)
127
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