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參數資料
型號: MC68HC05C9A
廠商: Motorola, Inc.
元件分類: 8位微控制器
英文描述: 8-Bit Microcontroller(8位微控制器)
中文描述: 8位微控制器(8位微控制器)
文件頁數: 129/160頁
文件大小: 783K
代理商: MC68HC05C9A
Electrical Specifications
Control Timing
MC68HC05C9A
Rev. 4.0
General Release Specification
MOTOROLA
Electrical Specifications
129
L
G
R
Figure 12-5. External Interrupt Timing
Figure 12-6. STOP Recovery Timing Diagram
IRQ
t
ILIH
t
ILIL
t
ILIH
IRQ PIN
I.
.
.
IRQN
a.
Edge-Sensitive Trigger Condition
. The minimum pulse width (t
) is either 125 ns (f
= 2.1 MHz)
or 250 ns (f
= 1 MHz). The period t
should not be less than the number of t
CYC
cycles it takes to
execute the interrupt service routine plus 19 t
CYC
cycles.
b.
Level-Sensitive Trigger Condition
. If after servicing an interrupt the IRQ remains low,
the next interrupt is recognized
(INTERNAL)
NORMALLY
USED WITH
WIRED-OR
CONNECTION
t
ILIH
4064 t
CYC
OSC
1
t
RL
RESET
IRQ
2
IRQ
3
INTERNAL
CLOCK
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
RESET OR INTERRUPT
VECTOR FETCH
3FFE
3FFE
3FFE
3FFE
3FFE
3FFF4
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