参数资料
型号: ST52E430B/D
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 20 MHz, MICROCONTROLLER, CDIP32
封装: WINDOWED, SHRINK, CERAMIC, DIP-32
文件页数: 6/120页
文件大小: 502K
代理商: ST52E430B/D
103/120
ST52T430/E430
RETI
Return from Interrupt
Format:
reti
Operation:
PC (SP)
(PC = Program Counter)
SP SP + 2 (SP = Stack Pointer)
Flag saved flags
Description: This instruction performs the return from a interrupt service routine. It determines the re-
turn of the device to the state it was before the interrupt. The value of the PC is popped
from the top of the stack, together with the saved flags.
Flags:
Z
not affected.
C
not affected.
S
not affected.
Bytes:
1
Cycles:
12
Example:
If the value to the top of the stack is 0e4h, the instruction:
reti
00110000
determinates the PC to be loaded with the value 0e4h, the previous value to be lost and
the flags status before the interrupt to be restored.
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