Datasheet

© 2009 Microchip Technology Inc. Preliminary DS39937B-page 203
PIC24F04KA201 FAMILY
TABLE 26-26: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 1.8V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +85°C for Industrial
Param
No.
Symbol Characteristic Min. Typ
(1)
Max. Units Conditions
SY10 TmcL MCLR
Pulse Width (low) 2 — — μs
SY11 T
PWRT Power-up Timer Period 50 64 90 ms
SY12 T
POR Power-on Reset Delay 1 5 10 μs
SY13 T
IOZ I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
——100ns
SY20 T
WDT Watchdog Timer Time-out Period 0.85 1.0 1.15 ms 1.32 prescaler
3.4 4.0 4.6 ms 1:128 prescaler
SY25 T
BOR Brown-out Reset Pulse Width 1 — — μs
SY35 T
FSCM Fail-Safe Clock Monitor Delay — 2 2.3 μs
SY45 T
RST Configuration Update Time — 20 — μs
TVREG On-Chip Voltage Regulator
Output Delay
—10—μs
SY55 T
LOCK PLL Start-up Time — 1 — ms
SY65 TOST Oscillator Start-up Time — 1024 — TOSC
SY75 TFRC Fast RC Oscillator Start-up Time — 1 1.5 μs
SY85 TLPRC Low-Power Oscillator Start-up
Time
——100μs
Note 1: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.