PIC32MX440F256H-80I Datasheet, PDF (608/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
FIGURE 30-5:
EXTERNAL RESET TIMING CHARACTERISTICS
Clock Sources = (FRC, FRCDIV, FRCDIV16, FRCPLL, EC, ECPLL and LPRC)
MCLR
BOR
TMCLR
(SY20)
Reset Sequence
TBOR
(SY30)
(TSYSDLY)
SY02
CPU starts fetching code
Clock Sources = (HS, HSPLL, XT, XTPLL and SOSC)
Reset Sequence
(TSYSDLY)
SY02
TOST
(SY10)
CPU starts fetching code
TABLE 30-22: RESETS TIMING
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
Param.
No.
Symbol
Characteristics⁽¹⁾
Min. Typical⁽²⁾ Max. Units
Conditions
SY00 TPU
Power-up Period
—
400
600
μs -40°C to +85°C
Internal Voltage Regulator Enabled
SY01
TPWRT
Power-up Period
External VDDCORE Applied
(Power-Up-Timer Active)
48
64
80
ms -40°C to +85°C
SY02 TSYSDLY System Delay Period:
—
1 μs
—
Time required to reload Device
+
Configuration Fuses plus SYSCLK
8 SYSCLK
delay before first instruction is
cycles
fetched.
— _{-40°C to +85°C}
SY20 TMCLR MCLR Pulse Width (low)
—
2
—
μs -40°C to +85°C
SY30 TBOR 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.
DS61143E-page 606
Preliminary
© 2008 Microchip Technology Inc.