Datasheet
2010-2012 Microchip Technology Inc. DS41419D-page 367
PIC16(L)F1824/1828
30.8 AC Characteristics: PIC16(L)F1824/1828-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 -40°C T
A +125°C
Param
No.
Sym. Characteristic Min. Typ† Max. Units Conditions
OS01 F
OSC External CLKIN Frequency
(NOTE 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 (NOTE 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 (NOTE 1) 27 — s LP Oscillator mode
250 — ns XT Oscillator mode
50 — ns HS Oscillator mode
50 — ns EC Oscillator mode
Oscillator Period (NOTE 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 (NOTE 1) 200 — DC ns TCY = FOSC/4
OS04* TosH,
Tos L
External CLKIN High,
External CLKIN Low
2——s LP oscillator
100 — — ns XT oscillator
20 — — ns HS oscillator
OS05* TosR,
Tos F
External CLKIN Rise,
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.
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 con-
sumption. 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.