C8051F064EK Silicon Laboratories Inc, C8051F064EK Datasheet - Page 137
C8051F064EK
Manufacturer Part Number
C8051F064EK
Description
KIT EVAL FOR C8051F064
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F064EK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F06x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F064
Silicon Family Name
C8051F06x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F064
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1219
- Current page: 137 of 328
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On exit from the PCA interrupt service routine, the CIP-51 will return to the ADC2 Window Comparator
ISR. On execution of the RETI instruction, SFR Page 0x00 used to access the PCA registers will be auto-
matically popped off of the SFR Page Stack, and the contents of the SFRNEXT register will be moved to
the SFRPAGE register. Software in the ADC2 ISR can continue to access SFRs as it did prior to the PCA
interrupt. Likewise, the contents of SFRLAST are moved to the SFRNEXT register. Recall this was the
SFR Page value 0x0F being used to access Port 5 before the ADC2 interrupt occurred. See Figure 13.7
below.
SFRNEXT
SFRLAST
SFRPAGE
popped to
SFRNEXT
popped to
Figure 13.7. SFR Page Stack Upon Return From PCA Interrupt
stack on return from
popped off of the
SFR Page 0x00
(ADC2)
(Port 5)
Automatically
0x0F
0x02
interrupt
Rev. 1.2
C8051F060/1/2/3/4/5/6/7
SFRPAGE
SFRNEXT
SFRLAST
137
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