參數(shù)資料
型號： PIC12C67X
廠商： Microchip Technology Inc.
英文描述： 8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory
中文描述： 8引腳，8位CMOS微控制器與A / D轉(zhuǎn)換器和EEPROM數(shù)據(jù)存儲器
文件頁數(shù)： 100/129頁
文件大?。?/td> 931K
代理商： PIC12C67X
PIC12C67X
DS30561B-page 100
1999 Microchip Technology Inc.
12.6
Timing Diagrams and Specifications
FIGURE 12-5: EXTERNAL CLOCK TIMING
TABLE 12-1:
CLOCK TIMING REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ
Max
Units Conditions
F
OSC
External CLKIN Frequency
(Note 1)
DC
DC
DC
DC
DC
.455
4
4
5
250
250
100
5
250
250
250
100
5
400
50
2.5
10
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4
4
MHz
MHz
MHz
kHz
MHz
MHz
MHz
MHz
kHz
ns
ns
ns
μ
s
ns
ns
ns
ns
μ
s
ns
ns
μ
s
ns
ns
ns
ns
XT and EXTRC osc mode
HS osc mode (PIC12CE67X-04)
HS osc mode (PIC12CE67X-10)
LP osc mode
EXTRC osc mode
XT osc mode
HS osc mode (PIC12CE67X-04)
HS osc mode (PIC12CE67X-10)
LP osc mode
XT and EXTRC osc mode
HS osc mode (PIC12CE67X-04)
HS osc mode (PIC12CE67X-10)
LP osc mode
EXTRC osc mode
XT osc mode
HS osc mode (PIC12CE67X-04)
HS osc mode (PIC12CE67X-10)
LP osc mode
T
CY
= 4/F
OSC
XT oscillator
LP oscillator
HS oscillator
XT oscillator
LP oscillator
HS oscillator
10
200
4
4
4
10
200
—
—
—
—
—
10,000
250
250
—
DC
—
—
—
25
50
15
Oscillator Frequency
(Note 1)
1
T
OSC
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
4
TosR,
TosF
External Clock in (OSC1) Rise
or Fall Time
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 exe-
cuting 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. OSC2 is discon-
nected (has no loading) for the PIC12C67X.
OSC1
CLKOUT
Q4
Q1
Q2
Q3
Q4
Q1
1
2
3
3
4
4
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