參數(shù)資料
型號: MC68HC11A8BCFU2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
封裝: QFP-64
文件頁數(shù): 126/158頁
文件大小: 776K
代理商: MC68HC11A8BCFU2
MOTOROLA
A-6
ELECTRICAL CHARACTERISTICS
MC68HC11A8
TECHNICAL DATA
A
NOTES:
1.RESET is recognized during the first clock cycle it is held low. Internal circuitry then drives the pin low for four
clock cycles, releases the pin, and samples the pin level two cycles later to determine the source of the interrupt.
Refer to
9 RESETS, INTERRUPTS, AND LOW POWER MODES
for further detail.
2.All timing is shown with respect to 20% V
DD
and 70% V
DD
, unless otherwise noted.
Table A-4a Control Timing (MC68L11A8)
V
DD
= 3.0 Vdc to 5.5 Vdc, V
SS
= 0 Vdc, T
A
= T
L
to T
H
Characteristic
Symbol
1.0 MHz
Min
dc
1000
dc
325
2.0 MHz
Min
dc
500
dc
200
Unit
Max
1.0
4.0
4.0
Max
2.0
8.0
8.0
Frequency of Operation
E-Clock Period
Crystal Frequency
External Oscillator Frequency
Processor Control Setup
Time
Reset Input Pulse Width
(Note 1)
f
o
MHz
ns
MHz
MHz
ns
t
cyc
f
XTAL
4 f
o
t
PCSU
t
PCSU
= 1/4 t
cyc
+ 50 ns
(To Guarantee External
Reset Vector)
(Minimum Input Time;
Can Be Preempted by
Internal Reset)
PW
RSTL
8
1
8
1
t
cyc
Mode Programming Setup Time
Mode Programming Hold Time
Interrupt Pulse Width,
IRQ Edge-Sensitive Mode
Wait Recovery Start-up Time
Timer Pulse Width
Input Capture,
Pulse Accumulator Input
t
MPS
t
MPH
PW
IRQ
2
2
t
cyc
ns
ns
10
1020
10
520
PW
IRQ
= t
cyc
+ 20 ns
t
WRS
PW
TIM
4
520
4
t
cyc
ns
PW
TIM
= t
cyc
+ 20 ns
1020
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