参数资料
型号: MC68HC05C12AB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 89/156页
文件大小: 3848K
代理商: MC68HC05C12AB
NON-DISCLOSURE
AGREEMENT
REQUIRED
Interrupts
General Release Specification
MC68HC05C12A Rev. 3.0
Interrupts
Figure 4-1. Interrupt Flowchart
INTERNAL
TIMER
INTERRUPT
?
INTERNAL
SCI
INTERRUPT
?
N
RESTORE REGISTERS
FROM STACK:
CCR, A, X, PC
IRQ
EXTERNAL
INTERRUPT
?
LOAD PC FROM:
SWI: $3FFC–$3FFD
IRQ: $3FFA–$3FFB
TIMER: $3FF8–$3FF9
SCI: $3FF6–$3FF7
SPI: $3FF4–$3FF5
SET I BIT IN
CC REGISTER
STACK
PC, X, A, CCR
CLEAR IRQ
REQUEST LATCH
FETCH NEXT
INSTRUCTION
EXECUTE
INSTRUCTION
N
Y
N
I BIT
IN CCR SET?
INTERNAL
SPI
INTERRUPT
?
SWI
INSTRUCTION
?
N
Y
RTI
INSTRUCTION
?
Y
FROM
RESET
N
Y
N
Y
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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