參數(shù)資料
型號： MTA85412S-04I/SS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO20
封裝： 0.209 INCH, PLASTIC, SSOP-20
文件頁數(shù)： 35/72頁
文件大?。?/td> 760K
代理商： MTA85412S-04I/SS
MTA85XXX
DS40115C-page 40
1995 Microchip Technology Inc.
FIGURE 15-4: EXTERNAL CLOCK TIMING
TABLE 15-7:
EXTERNAL CLOCK TIMING REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
Fosc
External CLKIN Frequency
(Note 1)
DC
—
4
MHz
XT and RC osc mode
DC
—
4
MHz
HS osc mode (PIC16C5XA-04)
DC
—
10
MHz
HS osc mode (PIC16C5XA-10)
DC
—
20
MHz
HS osc mode (PIC16C5XA-20)
DC
—
200
kHz
LP osc mode
Oscillator Frequency
(Note 1)
DC
—
4
MHz
RC osc mode
0.1
—
4
MHz
XT osc mode
4
—
4
MHz
HS osc mode (PIC16C5XA-04)
4
—
10
MHz
HS osc mode (PIC16C5XA-10)
4
—
20
MHz
HS osc mode (PIC16C5XA-20)
5
—
200
kHz
LP osc mode
1TOSC
External CLKIN Period
(Note 1)
250
—
ns
XT and RC osc mode
250
—
ns
HS osc mode (PIC16C5XA-04)
100
—
ns
HS osc mode (PIC16C5XA-10)
50
—
ns
HS osc mode (PIC16C5XA-20)
5.0
—
s
LP osc mode
Oscillator Period
(Note 1)
250
—
ns
RC osc mode
250
—
10,000
ns
XT osc mode
250
—
250
ns
HS osc mode (PIC16C5XA-04)
100
—
250
ns
HS osc mode (PIC16C5XA-10)
50
—
250
ns
HS osc mode (PIC16C5XA-20)
5—
200
s
LP osc mode
2TCY
Instruction Cycle Time (Note 1)
1.0
—
DC
s
3
TosL, TosH Clock in (OSC1) Low or High Time
50
—
ns
XT oscillator
2.5
—
s
LP oscillator
10
—
ns
HS oscillator
4
TosR, TosF 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/CLKIN 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
13
3
4
2
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