
2010 Microchip Technology Inc.
DS70138G-page 187
dsPIC30F3014/4013
FIGURE 23-7:
BAND GAP START-UP TIME CHARACTERISTICS
TABLE 23-20: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature
-40°C
TA +85°C for Industrial
-40°C
TA +125°C for Extended
Param
No.
Symbol
Characteristic(1)
Min
Typ(2)
Max
Units
Conditions
SY10
TmcL
MCLR Pulse Width (low)
2
—
s
-40°C to +85°C
SY11
TPWRT
Power-up Timer Period
2
10
43
4
16
64
8
32
128
ms
-40°C to +85°C,
VDD = 5V
User programmable
SY12
TPOR
Power-on Reset Delay
3
10
30
s
-40°C to +85°C
SY13
TIOZ
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
—0.8
1.0
s
SY20
TWDT1
TWDT2
TWDT3
Watchdog Timer Time-out Period
(no prescaler)
1.1
1.2
1.3
2.0
6.6
5.0
4.0
ms
VDD = 2.5V
VDD = 3.3V, ±10%
VDD = 5V, ±10%
SY25
TBOR
Brown-out Reset Pulse Width(3)
100
—
sVDD VBOR (D034)
SY30
TOST
Oscillator Start-up Timer Period
—
1024 TOSC
——
TOSC = OSC1 period
SY35
TFSCM
Fail-Safe Clock Monitor Delay
—
500
900
s
-40°C to +85°C
Note 1:
These parameters are characterized but not tested in manufacturing.
2:
Data in “Typ” column is at 5V, 25°C unless otherwise stated.
3:
TABLE 23-21: BAND GAP START-UP TIME REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature
-40°C
TA +85°C for Industrial
-40°C
TA +125°C for Extended
Param
No.
Symbol
Characteristic(1)
Min
Typ(2)
Max
Units
Conditions
SY40
TBGAP
Band Gap Start-up Time
—
40
65
s
Defined as the time between the
instant that the band gap is enabled
and the moment that the band gap
reference voltage is stable
(RCON<13> status bit)
Note 1:
These parameters are characterized but not tested in manufacturing.
2:
Data in “Typ” column is at 5V, 25°C unless otherwise stated.
VBGAP
Enable Band Gap(1)
Band Gap
0V
Stable
Note 1:
Note: Set LVDEN bit (RCON<12>) or FBORPOR<7>set.
SY40