參數(shù)資料
型號(hào): MC68HC05P4ADWR3
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 96/102頁
文件大?。?/td> 930K
代理商: MC68HC05P4ADWR3
Electrical Specifications
3.3-Volt Control Timing
MC68HC05P4A — Rev. 6.0
Advance Information
MOTOROLA
Electrical Specifications
93
Figure 12-2. STOP Recovery Timing
Figure 12-3. External Interrupt Timing
1FFF
1FFE
4
RESET OR INTERRUPT
VECTOR FETCH
INTERNAL
CLOCK
IRQ 3
OSC 1
IRQ 2
INTERNAL
ADDRESS
BUS
RESET
Notes:
1. Represents the internal clocking of the OSC1 pin.
2. IRQ pin edge-sensitive mask option
3. IRQ pin level- and edge-sensitive mask option
4. RESET vector address shown for timing example
tRL
tILIH
4064
tcyc
ILIH
t
ILIL
t
ILIH
t
IRQ (PIN)
IRQn
IRQ1
RQ (MCU)
NORMALLY
USED WITH
WIRE-ORed
CONNECTION
Edge-Sensitive Trigger Condition
The minimum pulse width (tILIH) is either
125 ns (VDD = 5 V) or 250 ns (VDD = 3 V).
The period tILIL should not be less than
the number of tcyc cycles it takes to
execute the interrupt service routine
plus 19 tcyc cycles.
Level-Sensitive Trigger Condition
If after servicing an interrupt the IRQ
remains low, then the next interrupt is
recognized.
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