C8051F040-TB Silicon Laboratories Inc, C8051F040-TB Datasheet - Page 140
C8051F040-TB
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
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C8051F040/1/2/3/4/5/6/7
On the execution of the RETI instruction in the ADC2 Window Comparator ISR, the value in SFRPAGE
register is overwritten with the contents of SFRNEXT. The CIP-51 may now access the Port 5 SFR bits as
it did prior to the interrupts occurring. See Figure 12.8 below.
140
Figure 12.7. SFR Page Stack Upon Return From PCA Interrupt
SFRNEXT
SFRLAST
SFRPAGE
popped to
SFRNEXT
popped to
stack on return from
popped off of the
SFR Page 0x00
(ADC2)
(Port 5)
Automatically
0x0F
0x02
interrupt
Rev. 1.5
SFRPAGE
SFRNEXT
SFRLAST
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