參數(shù)資料
型號(hào): PIC16F77
廠商: Microchip Technology Inc.
英文描述: 40-Pin 8-Bit CMOS FLASH Microcontrollers(40腳、8位CMOS 閃速微控制器)
中文描述: 40引腳8位CMOS閃存微控制器(40腳,8位的CMOS閃速微控制器)
文件頁數(shù): 132/170頁
文件大?。?/td> 3150K
代理商: PIC16F77
PIC16F7X
DS30325A-page 132
Advance Information
2000 Microchip Technology Inc.
FIGURE 15-4: EXTERNAL CLOCK TIMING
OSC1
CLKOUT
Q4
Q1
Q2
Q3
Q4
Q1
1
2
3
3
4
4
TABLE 15-1:
EXTERNAL CLOCK TIMING REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ
Max
Units Conditions
F
OSC
External CLKIN Frequency
(Note 1)
DC
DC
DC
DC
0.1
4
5
1000
50
5
250
250
50
5
200
T
CY
1
20
32
4
4
20
200
10,000
250
DC
MHz
MHz
kHz
MHz
MHz
MHz
kHz
ns
ns
ms
ns
ns
ns
ms
ns
XT osc mode
HS osc mode
LP osc mode
RC osc mode
XT osc mode
HS osc mode
LP osc mode
XT osc mode
HS osc mode
LP osc mode
RC osc mode
XT osc mode
HS osc mode
LP osc mode
T
CY
= 4/F
OSC
Oscillator Frequency
(Note 1)
1
T
OSC
External CLKIN Period
(Note 1)
Oscillator Period
(Note 1)
2
T
CY
Instruction Cycle Time
(Note 1)
External Clock in (OSC1) High
or Low Time
3
TosL,
TosH
500
2.5
15
25
50
15
ns
ms
ns
ns
ns
ns
XT oscillator
LP oscillator
HS oscillator
XT oscillator
LP oscillator
HS oscillator
4
TosR,
TosF
External Clock in (OSC1) Rise
or Fall Time
Legend:
Data in "Typ" column is at 5V, 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 operation and/or
higher than expected current consumption. All devices are tested to operate at "min." values with an external
clock applied to the OSC1/CLKIN pin. When an external clock input is used, the "max." cycle time limit is
"DC" (no clock) for all devices.
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