Datasheet

 2008-2011 Microchip Technology Inc. DS41364E-page 399
PIC16(L)F1934/6/7
TABLE 30-5: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET PARAMETERS
FIGURE 30-10: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C T
A +125°C
Param
No.
Sym. Characteristic Min. Typ† Max. Units Conditions
30 TMCLMCLR Pulse Width (low) 2 — — s
31 T
WDTLP Low-Power Watchdog Timer
Time-out Period
10 16 27 ms VDD = 3.3V-5V
1:16 Prescaler used
32 T
OST Oscillator Start-up Timer Period
(1), (2)
— 1024 — Tosc (Note 3)
33* T
PWRT Power-up Timer Period, PWRTE = 0 40 65 140 ms
34* TIOZ I/O high-impedance from MCLR Low
or Watchdog Timer Reset
——2.0s
35 V
BOR Brown-out Reset Voltage 2.38
1.80
2.5
1.9
2.73
2.11
VBORV=2.5V
BORV=1.9V
36* V
HYST Brown-out Reset Hysteresis 0 25 60 mV -40°C to +85°C
37* T
BORDC Brown-out Reset DC Response
Time
1335sVDD  VBOR
* 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 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: By design.
3: Period of the slower clock.
4: To ensure these voltage tolerances, V
DD and VSS must be capacitively decoupled as close to the device as
possible. 0.1 F and 0.01 F values in parallel are recommended.
T0CKI
T1CKI
40
41
42
45
46
47
49
TMR0 or
TMR1