C8051F040-TB Silicon Laboratories Inc, C8051F040-TB Datasheet - Page 143

• Manufacturer Part Number: C8051F040-TB
• Description: BOARD PROTOTYPING W/C8051F040
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F040-TB

• Contents: Board
• Processor To Be Evaluated: C8051F04x
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F040
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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