Microchip Technology AC244045 Data Sheet
2010-2012 Microchip Technology Inc.
DS41440C-page 361
PIC16(L)F1825/1829
30.8
AC Characteristics: PIC16(L)F1825/1829-I/E
FIGURE 30-6:
CLOCK TIMING
TABLE 30-1:
CLOCK OSCILLATOR TIMING REQUIREMENTS
OSC1/CLKIN
OSC2/CLKOUT
Q4
Q1
Q2
Q3
Q4
Q1
OS02
OS03
OS04
OS04
OSC2/CLKOUT
(LP,XT,HS Modes)
(CLKOUT Mode)
Standard Operating Conditions (unless otherwise stated)
Operating temperature
Operating temperature
-40°C
T
A
+125°C
Param
No.
Sym.
Characteristic
Min.
Typ†
Max.
Units
Conditions
OS01
F
OSC
External CLKIN Frequency
(1)
DC
—
0.5
MHz
EC Oscillator mode (low)
DC
—
4
MHz
EC Oscillator mode (medium)
DC
—
32
MHz
EC Oscillator mode (high)
Oscillator Frequency
(1)
—
32.768
—
kHz
LP Oscillator mode
0.1
—
4
MHz
XT Oscillator mode
1
—
4
MHz
HS Oscillator mode, V
DD
2.7V
1
—
20
MHz
HS Oscillator mode, V
DD
>
2.7V
DC
—
4
MHz
RC Oscillator mode
OS02
T
OSC
External CLKIN Period
(1)
27
—
s
LP Oscillator mode
250
—
ns
XT Oscillator mode
50
—
ns
HS Oscillator mode
31.25
—
ns
EC Oscillator mode
Oscillator Period
(1)
—
30.5
—
s
LP Oscillator mode
250
—
10,000
ns
XT Oscillator mode
50
—
1,000
ns
HS Oscillator mode
250
—
—
ns
RC Oscillator mode
OS03
T
CY
Instruction Cycle Time
(1)
125
—
DC
ns
T
CY
= F
OSC
/4
OS04*
TosH,
TosL
TosL
External CLKIN High,
External CLKIN Low
External CLKIN Low
2
—
—
s
LP oscillator
100
—
—
ns
XT oscillator
20
—
—
ns
HS oscillator
OS05*
TosR,
TosF
TosF
External CLKIN Rise,
External CLKIN Fall
External CLKIN Fall
0
—
ns
LP oscillator
0
—
ns
XT oscillator
0
—
ns
HS oscillator
*
These parameters are characterized but not tested.
†
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
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 OSC1 pin. When an
external clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.
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.