C8051F047R Silicon Labs, C8051F047R Datasheet - Page 143
![no-image](/images/no-image-200.jpg)
C8051F047R
Manufacturer Part Number
C8051F047R
Description
8-bit Microcontrollers - MCU 25 MIPS 32KB 10ADC
Manufacturer
Silicon Labs
Datasheet
1.C8051F044R.pdf
(328 pages)
Specifications of C8051F047R
Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
32 KB
Data Ram Size
4.25 KB
On-chip Adc
Yes
Operating Supply Voltage
2.7 V to 3.6 V
Package / Case
TQFP-64
Mounting Style
SMD/SMT
A/d Bit Size
10 bit
A/d Channels Available
13
Data Rom Size
64 KB
Interface Type
CAN, SMBus, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
32
Number Of Timers
16 bit
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
500
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
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Bits7-0:
Bits7-0:
R/W
R/W
Bit7
Bit7
SFR page context is retained upon interrupts/return from interrupts in a 3 byte SFR Page
Stack: SFRPAGE is the first entry, SFRNEXT is the second, and SFRLAST is third entry.
The SFRPAGE, SFRSTACK, and SFRLAST bytes may be used alter the context in the SFR
Page Stack. Only interrupts and returns from interrupt service routines push and pop the
SFR Page Stack. (See
Write:
Sets the SFR Page contained in the second byte of the SFR Stack. This will cause the
SFRPAGE SFR to have this SFR page value upon a return from interrupt.
Read:
Returns the value of the SFR page contained in the second byte of the SFR stack. This is
the value that will go to the SFR Page register upon a return from interrupt.
SFR page context is retained upon interrupts/return from interrupts in a 3 byte SFR Page
Stack: SFRPAGE is the first entry, SFRNEXT is the second, and SFRLAST is the third
entry. The SFR stack bytes may be used alter the context in the SFR Page Stack, and will
not cause the stack to ‘push’ or ‘pop’. Only interrupts and returns from the interrupt service
routine push and pop the SFR Page Stack.
Write:
Sets the SFR Page in the last entry of the SFR Stack. This will cause the SFRNEXT SFR to
have this SFR page value upon a return from interrupt.
Read:
Returns the value of the SFR page contained in the last entry of the SFR stack.
R/W
R/W
Bit6
Bit6
SFR Definition 12.3. SFR Next Register: SFRNEXT
SFR Definition 12.4. SFR Last Register: SFRLAST
R/W
R/W
Bit5
Bit5
Section 12.2.6.2
R/W
R/W
Bit4
Bit4
Rev. 1.5
R/W
R/W
Bit3
Bit3
and
C8051F040/1/2/3/4/5/6/7
Section 12.2.6.3
R/W
R/W
Bit2
Bit2
R/W
R/W
Bit1
Bit1
for further information.)
SFR Address:
SFR Address:
SFR Page:
SFR Page:
R/W
R/W
Bit0
Bit0
0x85
All Pages
0x86
All Pages
00000000
00000000
Reset Value
Reset Value
143
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