參數(shù)資料
型號(hào): PIC16C620A
廠商: Microchip Technology Inc.
元件分類: 8位微控制器
英文描述: EPROM-Based 8-Bit CMOS Microcontroller
中文描述: 存儲(chǔ)器為基礎(chǔ)的8位CMOS微控制器
文件頁數(shù): 87/108頁
文件大?。?/td> 645K
代理商: PIC16C620A
1998 Microchip Technology Inc.
Preliminary
DS30235G-page 87
PIC16C62X
12.6
Timing Diagrams and Specifications
FIGURE 12-2: EXTERNAL CLOCK TIMING
TABLE 12-4:
EXTERNAL CLOCK TIMING REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ
Max
Units Conditions
Fos
External CLKIN Frequency
(Note 1)
DC
DC
DC
DC
0.1
1
DC
250
50
5
250
250
50
5
1.0
100*
2*
20*
4
MHz
MHz
kHz
MHz
MHz
MHz
kHz
ns
ns
μ
s
ns
ns
ns
μ
s
μ
s
ns
μ
s
ns
XT and RC osc mode, V
DD
=5.0V
HS osc mode
LP osc mode
RC osc mode, V
DD
=5.0V
XT osc mode
HS osc mode
LP osc mode
XT and RC osc mode
HS osc mode
LP osc mode
RC osc mode
XT osc mode
HS osc mode
LP osc mode
T
CYS
=F
OSC
/4
XT oscillator, T
OSC
L/H duty cycle
LP oscillator, T
OSC
L/H duty cycle
HS oscillator, T
OSC
L/H duty
cycle
XT oscillator
LP oscillator
HS oscillator
20
200
4
4
20
200
10,000
1,000
DC
Oscillator Frequency
(Note 1)
1
Tosc
External CLKIN Period
(Note 1)
Oscillator Period
(Note 1)
2
3*
T
CY
TosL,
TosH
Instruction Cycle Time (Note 1)
External Clock in (OSC1) High or
Low Time
Fosc/4
4*
TosR,
TosF
External Clock in (OSC1) Rise or
Fall Time
25*
50*
15*
ns
ns
ns
*
These parameters are characterized but not tested.
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 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 pin.
When an external clock input is used, the "Max." cycle time limit is "DC" (no clock) for all devices.
OSC1
CLKOUT
Q4
Q1
Q2
Q3
Q4
Q1
1
3
3
4
4
2
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