PIC18F258-ESLASHLSQTP datasheet(347/402 Pages) MICROCHIP

347 / 402 page

DS41159E-page 345

PIC18FXX8

FIGURE 27-8:

RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND

POWER-UP TIMER TIMING

FIGURE 27-9:

BROWN-OUT RESET AND LOW-VOLTAGE DETECT TIMING

TABLE 27-9:

RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER,

BROWN-OUT RESET AND LOW-VOLTAGE DETECT REQUIREMENTS

Param

No.

Symbol

Characteristic

Min

Typ

Max

Units

Conditions

TmcL

MCLR Pulse Width (low)

—

μs

TWDT

Watchdog Timer Time-out Period

(no prescaler)

718

TOST

Oscillation Start-up Timer Period

1024 TOSC

—

1024 TOSC

—TOSC = OSC1 period

TPWRT

Power-up Timer Period

132

TIOZ

I/O High-Impedance from MCLR Low

or Watchdog Timer Reset

—2

—

μs

TBOR

Brown-out Reset Pulse Width

200

—

μsFor VDD ≤ BVDD (see D005)

TIRVST

Time for Internal Reference

Voltage to become stable

—20

μs

TLVD

Low-Voltage Detect Pulse Width

200

—

μsFor VDD ≤ VLVD (see D420)

VDD

MCLR

Internal

POR

PWRT

Time-out

Oscillator

Time-out

Internal

Reset

Watchdog

Timer

Reset

I/O Pins

Note: Refer to Figure 27-5 for load conditions.

VDD

BVDD (for 35)

35, 37

VBGAP = 1.2V

VIRVST

Enable Internal

Internal Reference

VLVD (for 37)

Reference Voltage

Voltage Stable

PIC18F258-E/LSQTP Datasheet(PDF) 347 Page - Microchip Technology

PIC18F258-E/LSQTP Datasheet(HTML) 347 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL