參數(shù)資料
型號: MC68HC705JJ7S
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Microcontroller Unit
中文描述: 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20
封裝: WINDOWED, CERDIP-20
文件頁數(shù): 93/108頁
文件大小: 718K
代理商: MC68HC705JJ7S
Control Timing
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
93
Figure 10-7. External Interrupt Timing
Table 10-3. Control Timing (V
DD
= 3.3 Vdc)
(1)
1. V
DD
= 3.3 Vdc
±
10%, V
SS
= 0 Vdc,
TA =
40
°
C to +85
°
C,
unless otherwise noted.
2. The maximum width t
ILIL
or t
ILIH
should not be more than the number of cycles it takes to execute the interrupt service
routine plus 19 t
cyc
or the interrupt service routine will be re-entered.
Characteristic
Symbol
Min
Max
Unit
Oscillator frequency
Crystal oscillator option
External clock source
f
OSC
dc
4.2
4.2
MHz
Internal operating frequency (f
OSC
÷
2)
Crystal oscillator
External clock
f
OP
dc
2.1
2.1
MHz
Cycle time (1
÷
f
OP
)
t
cyc
476
ns
RESET pulse width low
t
RL
1.5
t
cyc
IRQ interrupt pulse width low
(edge-triggered)
t
ILIH
1.5
t
cyc
IRQ interrupt pulse width low
(edge- and level-triggered)
t
ILIL
1.5
Note
(2)
t
cyc
PA0–PA3 interrupt pulse width high
(edge-triggered)
t
IHIL
1.5
t
cyc
PA0–PA3 interrupt pulse width
(edge- and level-triggered)
t
IHIH
1.5
Note
(2)
t
cyc
OSC1 pulse width
t
OH
, t
OL
200
ns
IRQ
t
ILIH
t
ILIL
t
ILIH
IRQ PIN
IRQ
1
.
.
.
IRQ
n
(INTERNAL)
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PDF描述
MC68HC705JJ7CP HCMOS Microcontroller Unit
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