參數(shù)資料
型號(hào): 35007B
廠商: Microchip Technology Inc.
英文描述: 18-pin Enhanced FLASH/EEPROM 8-bit Microcontroller
中文描述: 18針/ EEPROM的8位微控制器的閃存
文件頁數(shù): 59/88頁
文件大?。?/td> 1495K
代理商: 35007B
2001 Microchip Technology Inc.
DS35007B-page 57
PIC16F84A
9.3.3
TIMING DIAGRAMS AND SPECIFICATIONS
FIGURE 9-6:
EXTERNAL CLOCK TIMING
OSC1
CLKOUT
Q4
Q1
Q2
Q3
Q4
Q1
1
3
3
4
4
2
TABLE 9-2:
EXTERNAL CLOCK TIMING REQUIREMENTS
Param No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
F
OSC
External CLKIN Frequency
(1)
DC
DC
DC
DC
DC
DC
0.1
0.1
1.0
DC
500
250
50
5.0
500
250
500
250
50
5.0
0.2
60
50
2.0
17.5
25
50
7.5
2
4
MHz
MHz
MHz
kHz
MHz
MHz
MHz
MHz
MHz
kHz
ns
ns
ns
μ
s
ns
ns
ns
ns
ns
μ
s
μ
s
ns
ns
μ
s
ns
ns
ns
ns
XT, RC osc
XT, RC osc
HS osc
LP osc
RC osc
RC osc
XT osc
XT osc
HS osc
LP osc
XT, RC osc
XT, RC osc
HS osc
LP osc
RC osc
RC osc
XT osc
XT osc
HS osc
LP osc
XT osc
XT osc
LP osc
HS osc
XT osc
LP osc
HS osc
(-04, LF)
(-04)
(-20)
(-04, LF)
(-04, LF)
(-04)
(-04, LF)
(-04)
(-20)
(-04, LF)
(-04, LF)
(-04)
(-20)
(-04, LF)
(-04, LF)
(-04)
(-04, LF)
(-04)
(-20)
(-04, LF)
20
200
2
4
2
4
20
200
10,000
10,000
1,000
DC
Oscillator Frequency
(1)
1
T
OSC
External CLKIN Period
(1)
Oscillator Period
(1)
2
3
T
CY
TosL,
TosH
Instruction Cycle Time
(1)
Clock in (OSC1) High or Low
Time
4/F
OSC
(-04, LF)
(-04)
(-04, LF)
(-20)
(-04)
(-04, LF)
(-20)
4
TosR,
TosF
Clock in (OSC1) Rise or Fall
Time
Data in "Typ" column is at 5.0V, 25
°
C unless otherwise stated. These parameters are for design guidance
only and are not tested.
Note 1:
Instruction cycle period (T
CY
) equals four times the input oscillator time-base period. All specified values
are based on characterization data for that particular oscillator type under standard operating conditions
with the device executing code. Exceeding these specified limits may result in an unstable oscillator opera-
tion and/or higher than expected current consumption. All devices are tested to operate at "Min." values
with an external clock applied to the OSC1 pin.
When an external clock input is used, the "Max." cycle time limit is "DC" (no clock) for all devices.
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