Datasheet

PIC12C5XX
DS40139E-page 90 1999 Microchip Technology Inc.
TABLE 13-6: DRT (DEVICE RESET TIMER PERIOD) - PIC12C508A, PIC12C509A, PIC12CE518,
PIC12CE519, PIC12LC508A, PIC12LC509A, PIC12LCR509A, PIC12LCE518 and
PIC12LCE519
FIGURE 13-5: TIMER0 CLOCK TIMINGS - PIC12C508A, PIC12C509A, PIC12CE518, PIC12CE519,
PIC12LC508A, PIC12LC509A, PIC12LCR509A, PIC12LCE518 and PIC12LCE519
TABLE 13-7: TIMER0 CLOCK REQUIREMENTS - PIC12C508A, PIC12C509A, PIC12CE518,
PIC12CE519, PIC12LC508A, PIC12LC509A, PIC12LCR509A, PIC12LCE518 and
PIC12LCE519
Oscillator Configuration POR Reset Subsequent Resets
IntRC & ExtRC
18 ms (typical)
(1)
300 µs (typical)
(1)
XT & LP
18 ms (typical)
(1)
18 ms (typical)
(1)
Note 1: Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only
and are not tested.
AC Characteristics Standard Operating Conditions (unless otherwise specified)
Operating Temperature 0°C T
A +70°C (commercial)
–40°C T
A +85°C (industrial)
–40°C T
A +125°C (extended)
Operating Voltage V
DD range is described in Section 13.1.
Parameter
No.
Sym Characteristic Min Typ
(1)
Max Units Conditions
40 Tt0H T0CKI High Pulse Width - No Prescaler 0.5 TCY + 20* ——ns
- With Prescaler 10* ns
41 Tt0L T0CKI Low Pulse Width - No Prescaler 0.5 T
CY + 20* ns
- With Prescaler 10* ns
42 Tt0P T0CKI Period 20 or T
CY + 40*
N
ns Whichever is greater.
N = Prescale Value
(1, 2, 4,..., 256)
* These parameters are characterized but not tested.
Note 1: Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only
and are not tested.
T0CKI
40 41
42