PIC18F23K22 Datasheet, PDF (447/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

PIC18(L)F2X/4XK22
TABLE 27-10: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min Typ Max Units
Conditions
30
TmcL MCLR Pulse Width (low)
2
—
—
s
31
TWDT Watchdog Timer Time-out Period
(no postscaler)
3.5
4.1
4.7
ms 1:1 prescaler
32
TOST Oscillation Start-up Timer Period
1024
— 1024 TOSC — TOSC = OSC1 period
TOSC
33
TPWRT Power-up Timer Period
54.8 64.4 74.1
ms
34
TIOZ I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
—
2
—
s
35
TBOR Brown-out Reset Pulse Width
200
—
—
s VDD  BVDD (see
D005)
36
TIVRST Internal Reference Voltage Stable
—
25
35
s
37
THLVD High/Low-Voltage Detect Pulse
Width
200
—
—
s VDD  VHLVD
38
TCSD CPU Start-up Time
5
—
10
s
39
TIOBST Time for HF-INTOSC to Stabilize
—
0.25
1
ms
FIGURE 27-8:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
T0CKI
T1OSO/T13CKI
40
41
42
45
46
47
48
TMR0 or
TMR1
Note: Refer to Figure 27-3 for load conditions.
 2010 Microchip Technology Inc.
Preliminary
DS41412B-page 447