PIC17C7XX_13 Datasheet, PDF (26/306 Pages) Microchip Technology – High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
In Figure 5-5, Figure 5-6 and Figure 5-7, the TPWRT
timer time-out is greater then the TOST timer time-out,
as would be the case in higher frequency crystals. For
lower frequency crystals (i.e., 32 kHz), TOST may be
greater.
FIGURE 5-5:
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD)
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
TPWRT
TOST
INTERNAL RESET
FIGURE 5-6:
TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD)
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
TPWRT
TOST
INTERNAL RESET
FIGURE 5-7:
SLOW RISE TIME (MCLR TIED TO VDD)
Minimum VDD Operating Voltage
5V
VDD
0V
1V
MCLR
INTERNAL POR
TPWRT
PWRT TIME-OUT
TOST
OST TIME-OUT
INTERNAL RESET
DS30289C-page 26
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