Datasheet

PIC32MX3XX/4XX
DS61143H-page 166 © 2011 Microchip Technology Inc.
FIGURE 29-5: EXTERNAL RESET TIMING CHARACTERISTICS
TABLE 29-22: RESETS TIMING
MCLR
(SY20)
Reset Sequence
(SY10)
CPU starts fetching code
BOR
(SY30)
TOST
TMCLR
TBOR
Reset Sequence
CPU starts fetching code
Clock Sources = (FRC, FRCDIV, FRCDIV16, FRCPLL, EC, ECPLL and LPRC)
Clock Sources = (HS, HSPLL, XT, XTPLL and SOSC)
(TSYSDLY)
SY02
(T
SYSDLY)
SY02
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ T
A ≤ +105°C for V-Temp
Param.
No.
Symbol Characteristics
(1)
Min. Typical
(2)
Max. Units Conditions
SY00 T
PU Power-up Period
Internal Voltage Regulator Enabled
—400600
μs -40°C to +85°C
SY01 T
PWRT Power-up Period
External Vcore Applied
(Power-Up-Timer Active)
48 64 80 ms -40°C to +85°C
SY02 T
SYSDLY System Delay Period:
Time required to reload Device
Configuration Fuses plus SYSCLK
delay before first instruction is
fetched.
—
1 μs
+
8
SYSCLK
cycles
——
-40°C to +85°C
SY20 T
MCLR MCLR Pulse Width (low)
—
2
—
μs -40°C to +85°C
SY30 T
BOR BOR Pulse Width (low)
—1 —
μs -40°C to +85°C
Note 1: These parameters are characterized, but not tested in manufacturing.
2: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Characterized by design but not tested.