PIC32MX3XX_1 Datasheet, PDF (166/208 Pages) Microchip Technology – High-Performance, General Purpose and USB 32-bit Flash Microcontrollers

PIC32MX3XX/4XX
FIGURE 29-4:
POWER-ON RESET TIMING CHARACTERISTICS
Internal Voltage Regulator Enabled
Clock Sources = (FRC, FRCDIV, FRCDIV16, FRCPLL, EC, ECPLL and LPRC)
VDD
VPOR
Power Up Sequence
(Note 2)
(TSYSDLY)
SY02
SY00
(TPU)
(Note 1)
CPU starts fetching code
Internal Voltage Regulator Enabled
Clock Sources = (HS, HSPLL, XT, XTPLL and SOSC)
VDD
VPOR
(TSYSDLY)
SY02
Power Up Sequence
(Note 2)
SY00
(TPU)
(Note 1)
SY10
(TOST)
CPU starts fetching code
External VDDCORE Provided
Clock Sources = (FRC, FRCDIV, FRCDIV16, FRCPLL, EC, ECPLL and LPRC)
VDD
VPOR
VDDCORE
Power Up Sequence
(Note 3)
(TSYSDLY)
SY02
SY01
(TPWRT)
(Note 1)
CPU starts fetching code
Note 1: The Power-up period will be extended if the power-up sequence completes before the device
exits from BOR (VDD < VDDMIN).
2: Includes interval voltage regulator stabilization delay.
3: Power-up Timer (PWRT); only active when the internal voltage regulator is disabled
DS61143G-page 166
© 2010 Microchip Technology Inc.