C8051F360 datasheet(95/288 Pages) SILABS

95 / 288 page

Rev. 1.0

C8051F360/1/2/3/4/5/6/7/8/9

SFR Definition 9.3. SFRNEXT: SFR Next Register

Bits 7–0: SFR Page Stack Bits: 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 SFR-

LAST 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 inter-

rupts cause pushes and pops of the SFR Page Stack.

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:

SFR Address:

all pages

0x85

R/W

Reset Value

00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SFR Definition 9.4. SFRLAST: SFR Last Register

Bits 7–0: SFR Page Stack Bits: 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 SFR-

LAST 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 inter-

rupts cause pushes and pops of 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.

SFR Page:

SFR Address:

all pages

0x86

R/W

Reset Value

00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

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