PIC16F631_08 Datasheet, PDF (244/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
TABLE 17-2: OSCILLATOR PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature
-40°C ≤ TA ≤ +125°C
Param
No.
Sym.
Characteristic
Freq.
Tolerance
Min.
Typ†
Max. Units
Conditions
OS06 TWARM Internal Oscillator Switch
—
when running⁽³⁾
—
—
2
TOSC Slowest clock
OS07
TSC
Fail-Safe Sample Clock
Period⁽¹⁾
—
—
21
—
ms LFINTOSC/64
OS08
HFOSC Internal Calibrated
HFINTOSC Frequency⁽²⁾
±1%
±2%
7.92 8.0 8.08 MHz VDD = 3.5V, 25°C
7.84 8.0 8.16 MHz 2.5V ≤ VDD ≤ 5.5V,
0°C ≤ TA ≤ +85°C
±5%
7.60 8.0 8.40 MHz 2.0V ≤ VDD ≤ 5.5V,
-40°C ≤ TA ≤ +85°C (Ind.),
-40°C ≤ TA ≤ +125°C (Ext.)
OS09*
LFOSC
Internal Uncalibrated
LFINTOSC Frequency
—
15
31
45
kHz
OS10*
TIOSC ST HFINTOSC Oscillator
Wake-up from Sleep
Start-up Time
—
5.5
12
24
μs VDD = 2.0V, -40°C to +85°C
—
3.5
7
14
μs VDD = 3.0V, -40°C to +85°C
—
3
6
11
μs VDD = 5.0V, -40°C to +85°C
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Note 1: 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 the OSC1 pin.
When an external clock input is used, the ‘max’ cycle time limit is ‘DC’ (no clock) for all devices.
2: To ensure these oscillator frequency tolerances, VDD and VSS must be capacitively decoupled as close to the device as
possible. 0.1 μF and 0.01 μF values in parallel are recommended.
3: By design.
DS41262E-page 242
© 2008 Microchip Technology Inc.