PIC16F887I-PT Datasheet, PDF (259/338 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

PIC16F882/883/884/886/887
17.8 AC Characteristics: PIC16F882/883/884/886/887 (Industrial, Extended)
FIGURE 17-4:
CLOCK TIMING
Q4
Q1
Q2
Q3
Q4
Q1
OSC1/CLKIN
OSC2/CLKOUT
(LP,XT,HS Modes)
OS02
OS04 OS04
OS03
OSC2/CLKOUT
(CLKOUT Mode)
TABLE 17-1: CLOCK OSCILLATOR TIMING REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating temperature
-40°C  TA  +125°C
Param
No.
Sym.
Characteristic
Min. Typ† Max. Units
Conditions
OS01 FOSC External CLKIN Frequency⁽¹⁾
DC
—
37
kHz LP Oscillator mode
DC
—
4
MHz XT Oscillator mode
DC
—
20
MHz HS Oscillator mode
Oscillator Frequency⁽¹⁾
DC
—
20
— 32.768 —
MHz EC Oscillator mode
kHz LP Oscillator mode
0.1
—
4
MHz XT Oscillator mode
1
—
20
MHz HS Oscillator mode
OS02 TOSC External CLKIN Period⁽¹⁾
DC
—
27
—
4
MHz RC Oscillator mode
•
s LP Oscillator mode
250
—
•
ns XT Oscillator mode
50
—
•
ns HS Oscillator mode
Oscillator Period⁽¹⁾
50
—
•
—
30.5
—
ns EC Oscillator mode
s LP Oscillator mode
250
— 10,000 ns XT Oscillator mode
50
— 1,000 ns HS Oscillator mode
OS03 TCY Instruction Cycle Time⁽¹⁾
250
—
—
ns RC Oscillator mode
200
TCY
DC
ns TCY = 4/FOSC
OS04* TosH, External CLKIN High,
TosL External CLKIN Low
2
—
100
—
—
s LP oscillator
—
ns XT oscillator
20
—
—
ns HS oscillator
OS05* TosR, External CLKIN Rise,
TosF External CLKIN Fall
0
—
•
ns LP oscillator
0
—
•
ns XT oscillator
0
—
•
ns HS oscillator
*
†
Note 1:
These parameters are characterized but not tested.
Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and
are not tested.
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 OSC1 pin. When an external clock input is used, the “max” cycle time limit is “DC” (no clock) for
all devices.
 2006-2012 Microchip Technology Inc.
DS41291G-page 259