Datasheet

 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  T
A  +85°C for Industrial
-40°C  T
A  +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 T
PWRT Power-up Timer Period 2
10
43
4
16
64
8
32
128
ms -40°C to +85°C,
V
DD = 5V
User programmable
SY12 T
POR Power-on Reset Delay 3 10 30 s -40°C to +85°C
SY13 T
IOZ I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
—0.81.0s
SY20 T
WDT1
T
WDT2
T
WDT3
Watchdog Timer Time-out Period
(no prescaler)
1.1
1.2
1.3
2.0
2.0
2.0
6.6
5.0
4.0
ms
ms
ms
VDD = 2.5V
V
DD = 3.3V, ±10%
V
DD = 5V, ±10%
SY25 TBOR Brown-out Reset Pulse Width
(3)
100 — — sVDD VBOR (D034)
SY30 T
OST 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: Refer to Figure 23-2 and Table 23-11 for BOR.
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  T
A  +85°C for Industrial
-40°C  T
A  +125°C for Extended
Param
No.
Symbol Characteristic
(1)
Min Typ
(2)
Max Units Conditions
SY40 T
BGAP 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