參數(shù)資料
型號： MCV14A-I/SL
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO14
封裝： 3.90 MM, PLASTIC, SOIC-14
文件頁數(shù)： 65/82頁
文件大?。?/td> 1053K
代理商： MCV14A-I/SL
MCV14A
DS41338C-page 68
Preliminary
2009 Microchip Technology Inc.
FIGURE 11-4:
EXTERNAL CLOCK TIMING
TABLE 11-6:
EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions (unless otherwise specified)
Operating Temperature -40
°C ≤ TA ≤ +85°C (industrial),
Operating Voltage VDD range is described in Section 11.1 “DC
Param
No.
Sym
Characteristic
Min
Typ(1)
Max
Units
Conditions
1A
FOSC
External CLKIN Frequency(2)
DC
—
4
MHz
XT Oscillator mode
DC
—
20
MHz
HS Oscillator mode
DC
—
200
kHz
LP Oscillator mode
Oscillator Frequency(2)
—
4
MHz
EXTRC Oscillator mode
0.1
—
4
MHz
XT Oscillator mode
4
—
20
MHz
HS Oscillator mode
—
200
kHz
LP Oscillator mode
1TOSC
External CLKIN Period(2)
250
—
ns
XT Oscillator mode
50
—
ns
HS Oscillator mode
5—
—
μs
LP Oscillator mode
Oscillator Period(2)
250
—
ns
EXTRC Oscillator mode
250
—
10,000
ns
XT Oscillator mode
50
—
250
ns
HS Oscillator mode
5—
—
μs
LP Oscillator mode
2TCY
Instruction Cycle Time
200
4/FOSC
—ns
3
TosL,
TosH
Clock in (OSC1) Low or High
Time
50*
—
ns
XT Oscillator
2*
—
μs
LP Oscillator
10*
—
ns
HS Oscillator
4TosR,
TosF
Clock in (OSC1) Rise or Fall
Time
—
25*
ns
XT Oscillator
—
50*
ns
LP Oscillator
—
15*
ns
HS Oscillator
*
These parameters are characterized but not tested.
Note 1:
Data in the Typical (“Typ”) column is at 5V, 25
°C unless otherwise stated. These parameters are for
design guidance only and are not tested.
2:
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. When an external clock
input is used, the “max” cycle time limit is “DC” (no clock) for all devices.
OSC1
Q4
Q1
Q2
Q3
Q4
Q1
13
3
44
2
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