C8051F540-TB Silicon Laboratories Inc, C8051F540-TB Datasheet - Page 99
![BOARD PROTOTYPE W/C8051F540](/photos/9/25/92559/c8051f540-tb_sml.jpg)
C8051F540-TB
Manufacturer Part Number
C8051F540-TB
Description
BOARD PROTOTYPE W/C8051F540
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F540-TB
Contents
Board
Processor To Be Evaluated
C8051F54x
Processor Series
C8051F54x
Interface Type
USB
Operating Supply Voltage
5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F54x
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1672
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SFR Definition 12.4. SFRLAST: SFR Last
SFR Address = 0xA7; SFR Page = All Pages
Bit
7:0
Name
Reset
Type
Bit
SFRLAST[7:0]
Name
7
0
SFR Page Stack Bits.
This is the value that will go to the SFRNEXT register upon a return from inter-
rupt.
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.
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 return from interrupts cause pushes and pops of the SFR Page
Stack.
6
0
5
0
Rev. 1.1
4
SFRLAST[7:0]
0
R/W
Function
3
0
2
0
C8051F54x
1
0
0
0
99
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