參數(shù)資料
型號: PIC16LF818T-I/SS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 10 MHz, RISC MICROCONTROLLER, PDSO20
封裝: 0.209 INCH, PLASTIC, MO-150, SSOP-20
文件頁數(shù): 39/176頁
文件大小: 3124K
代理商: PIC16LF818T-I/SS
2004 Microchip Technology Inc.
DS39598E-page 131
PIC16F818/819
FIGURE 15-4:
EXTERNAL CLOCK TIMING
OSC1
CLKO
Q4
Q1
Q2
Q3
Q4
Q1
1
2
3
4
TABLE 15-1:
EXTERNAL CLOCK TIMING REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
FOSC
External CLKI Frequency (Note 1)
DC
1
MHz
XT and RC Oscillator mode
DC
20
MHz
HS Oscillator mode
DC
32
kHz
LP Oscillator mode
Oscillator Frequency (Note 1)
DC
4
MHz
RC Oscillator mode
0.1
4
MHz
XT Oscillator mode
4
5
20
200
MHz
kHz
HS Oscillator mode
LP Oscillator mode
1TOSC
External CLKI Period (Note 1)
1000
ns
XT and RC Oscillator mode
50
ns
HS Oscillator mode
5
ms
LP Oscillator mode
Oscillator Period (Note 1)
250
ns
RC Oscillator mode
250
10,000
ns
XT Oscillator mode
50
250
ns
HS Oscillator mode
5
ms
LP Oscillator mode
2TCY
Instruction Cycle Time (Note 1)
200
TCY
DC
ns
TCY = 4/FOSC
3TOSL,
TOSH
External Clock in (OSC1) High
or Low Time
500
ns
XT Oscillator
2.5
ms
LP Oscillator
15
ns
HS Oscillator
4TOSR,
TOSF
External Clock in (OSC1) Rise or
Fall Time
25
ns
XT Oscillator
50
ns
LP Oscillator
15
ns
HS Oscillator
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 (TCY) 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/CLKI pin. When an external clock input is used, the
“max.” cycle time limit is “DC” (no clock) for all devices.
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