PIC16F636-I Datasheet, PDF (181/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
15.10 AC Characteristics: PIC12F635/PIC16F636/639 (Industrial, Extended)
FIGURE 15-5:
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 15-1: 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⁾
Oscillator Frequency⁽¹⁾
DC
—
37
DC
—
4
DC
—
20
DC
—
20
— 32.768 —
0.1
—
4
1
—
20
kHz
MHz
MHz
MHz
kHz
MHz
MHz
LP Oscillator mode
XT Oscillator mode
HS Oscillator mode
EC Oscillator mode
LP Oscillator mode
XT Oscillator mode
HS Oscillator mode
OS02 TOSC External CLKIN Period⁽¹⁾
Oscillator Period⁽¹⁾
OS03
OS04*
TCY
TosH,
TosL
Instruction Cycle Time⁽¹⁾
External CLKIN High,
External CLKIN Low
OS05* TosR, External CLKIN Rise,
TosF External CLKIN Fall
DC
—
4
MHz RC Oscillator mode
27
—
∞
μs LP Oscillator mode
250
—
∞
ns XT Oscillator mode
50
—
∞
ns HS Oscillator mode
50
—
∞
ns EC Oscillator mode
—
30.5
—
μs LP Oscillator mode
250
— 10,000 ns XT Oscillator mode
50
— 1,000 ns HS Oscillator mode
250
—
—
ns RC Oscillator mode
200
TCY
DC
ns TCY = 4/FOSC
2
—
—
μs LP oscillator
100
—
—
ns XT oscillator
20
—
—
ns HS oscillator
0
—
50
ns LP oscillator
0
—
25
ns XT oscillator
*
†
Note 1:
0
—
15
ns HS oscillator
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.
© 2007 Microchip Technology Inc.
DS41232D-page 179