參數(shù)資料
型號: MC68HC05P4A
廠商: Motorola, Inc.
英文描述: 28-pin MCU (microcontroller unit) based on the MC68HC05P4(28引腳、基于MC68HC05P4升級的8位微控制器單元)
中文描述: 28引腳單片機(微控制器)的基礎(chǔ)上MC68HC05P4(28引腳,基于MC68HC05P4升級的8位微控制器單元)
文件頁數(shù): 93/102頁
文件大小: 930K
代理商: MC68HC05P4A
Electrical Specifications
3.3-Volt Control Timing
MC68HC05P4A — Rev. 6.0
AdvanceInformation
MOTOROLA
Electrical Specifications
93
Figure 12-2. STOP Recovery Timing
Figure 12-3. External Interrupt Timing
1FFF
1FFE
1FFE
1FFE
1FFE
1FFE
4
RESET OR INTERRUPT
VECTOR FETCH
INTERNAL
CLOCK
IRQ3
OSC1
IRQ2
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
t
RL
t
ILIH
4064
t
cyc
ILIH
t
ILIL
t
ILIH
t
IRQ (PIN)
IRQ
n
IRQ
1
RQ (MCU)
NORMALLY
USED WITH
WIRE-ORed
CONNECTION
Edge-Sensitive Trigger Condition
The mnimumpulse width (t
) is either
125 ns (V
= 5 V) or 250 ns (V
= 3 V).
The period t
should not be less than
the number of t
cycles it takes to
execute the interrupt service routine
plus 19 t
cyc
cycles.
Level-Sensitive Trigger Condition
If after servicing an interrupt theIRQ
remains low, then the next interrupt is
recognized.
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