PIC16C5X
FIGURE 5-3:
TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD)
VDD
MCLR
INTERNAL POR
TDRT
DRT TIME-OUT
INTERNAL RESET
FIGURE 5-4:
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD): FAST VDD RISE
TIME
VDD
MCLR
INTERNAL POR
TDRT
DRT TIME-OUT
INTERNAL RESET
FIGURE 5-5:
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD): SLOW VDD RISE
TIME
V1
VDD
MCLR
INTERNAL POR
TDRT
DRT TIME-OUT
INTERNAL RESET
When VDD rises slowly, the TDRT time-out expires long before VDD has reached its final value. In
this example, the chip will RESET properly if, and only if, V1 VDD min
DS30453E-page 22
Preliminary
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