Datasheet

PIC24FJ256DA210 FAMILY
DS39969B-page 382  2010 Microchip Technology Inc.
TABLE 30-15: INTERNAL RC ACCURACY
AC CHARACTERISTICS
Standard Operating Conditions: 2.2V to 3.6V (unless otherwise stated)
Operating temperature -40°C  T
A +85°C for Industrial
Param
No.
Characteristic Min Typ Max Units Conditions
F20 FRC Accuracy @
8MHz
(1,2)
-1 ±0.15 1 % -40°C  TA +85°C 2.2V  VDD 3.6V
F21 LPRC @ 31 kHz -20 — 20 % -40°C  T
A +85°C VCAP (on-chip regulator
output voltage) = 1.8V
Note 1: Frequency calibrated at 25°C and 3.3V. OSCTUN bits can be used to compensate for temperature drift.
2: To achieve this accuracy, physical stress applied to the microcontroller package (ex., by flexing the PCB)
must be kept to a minimum.
TABLE 30-16: RC OSCILLATOR START-UP TIME
AC CHARACTERISTICS
Standard Operating Conditions: 2.2V to 3.6V (unless otherwise stated)
Operating temperature -40°C  T
A  +85°C for Industrial
Param
No.
Characteristic Min Typ Max Units Conditions
T
FRC —15—s
TLPRC —50—s
TABLE 30-17: RESET AND BROWN-OUT RESET REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.2V to 3.6V (unless other-
wise stated)
Operating temperature -40°C  T
A  +85°C for Industrial
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
SY10 TMCL MCLR Pulse width (Low) 2 — — s
SY12 TPOR Power-on Reset Delay — 2 — s
SY13 T
IOZ I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
— — 100 ns
SY25 T
BOR Brown-out Reset Pulse Width 1 — — sVDD VBOR
TRST Internal State Reset Time — 50 — s