Datasheet
1999-2012 Microchip Technology Inc. DS40192D-page 65
PIC16C505
TABLE 10-3: CALIBRATED INTERNAL RC FREQUENCIES - PIC16C505
3 TosL, TosH Clock in (OSC1) Low or High Time 50* — — ns XT oscillator
2* — — µs LP oscillator
10 ns HS oscillator
4 TosR, TosF Clock in (OSC1) Rise or Fall Time — — 25* ns XT oscillator
— — 50* ns LP oscillator
— — 15 ns HS oscillator
AC Characteristics Standard Operating Conditions (unless otherwise specified)
Operating Temperature 0C T
A +70C (commercial),
–40C T
A +85C (industrial),
–40C T
A +125C (extended)
Operating Voltage V
DD range is described in Section 10.1
Parameter
No.
Sym Characteristic Min* Typ
(1)
Max* Units Conditions
Internal Calibrated RC Frequency 3.65 4.00 4.28 MHz VDD = 5.0V
Internal Calibrated RC Frequency
3.55 4.00 4.31 MHz V
DD = 2.5V
* These parameters are characterized but not tested.
Note 1: Data in the Typical (“Typ”) column is at 5V, 25C unless otherwise stated. These parameters are for design guidance only
and are not tested.
TABLE 10-2: EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16C505 (CONTINUED)
AC Characteristics Standard Operating Conditions (unless otherwise specified)
Operating Temperature 0C T
A +70C (commercial),
–40C T
A +85C (industrial),
–40C T
A +125C (extended)
Operating Voltage V
DD range is described in Section 10.1
Parameter
No.
Sym Characteristic Min Typ
(1)
Max Units Conditions
* These parameters are characterized but not tested.
Note 1: Data in the Typical (“Typ”) column is at 5V, 25C unless otherwise stated. These parameters are for design guidance only
and are not tested.
2: All specified values are based on characterization data for that particular oscillator type under standard operating condi-
tions with the device executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or
higher than expected current consumption.
When an external clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.