PIC16LF1938-ESP データシートの表示（PDF） - Microchip Technology

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PIC16LF1938-ESP

28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP™ Technology

Microchip Technology 

PIC16F193X/LF193X

TABLE 3-5: TIME-OUT IN VARIOUS SITUATIONS

Oscillator Configuration

Power-up and Brown-out Reset

PWRTE = 0

PWRTE = 1

XT, HS, LP

64 ms + 1024 • TOSC

External RC

64 ms

EC

64 ms

INTOSC

64 ms

Note 1: LP mode with T1OSC disabled.

1024 • TOSC

—

—

1 μs

Wake-up from Sleep

or Oscillator Switch

1024 • TOSC

—

—

1 μs

TABLE 3-6: RESET BITS AND THEIR SIGNIFICANCE

STKOVF STKUNF RMCLR

RI

POR

BOR

TO

0

0

1

1

0

x

1

0

0

1

1

0

x

0

0

0

1

1

0

x

x

0

0

1

u

u

0

1

u

u

u

u

u

u

0

u

u

u

u

u

u

0

u

u

u

u

u

u

1

u

u

0

u

u

u

u

u

u

0

u

u

u

1

u

u

u

0

u

u

u

1

u

u

u

u

u

u

u

1

u

u

u

u

u

Legend: u = unchanged, x = unknown

PD

Condition

1 Power-on Reset

x Illegal, TO is set on POR

0 Illegal, PD is set on POR

1 Brown-out Reset

u WDT Reset

0 WDT Wake-up from Sleep

0 Interrupt Wake-up from Sleep

u MCLR Reset during normal operation

0 MCLR Reset during Sleep

u RESET instruction executed

u Stack Overflow Reset (STVREN = 1)

u Stack Underflow Reset (STVREN = 1)

FIGURE 3-5:

TIME-OUT SEQUENCE ON POWER-UP (DELAYED MCLR): CASE 1

VDD

MCLR

Internal POR

PWRT Time-out

OST Time-out

Internal Reset

TPWRT

TOST

DS41364B-page 66

Preliminary

© 2009 Microchip Technology Inc.

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