Datasheet

© 2011 Microchip Technology Inc. DS70149E-page 193
dsPIC30F5015/5016
FIGURE 24-6: BAND GAP START-UP TIME CHARACTERISTICS
TABLE 24-21: 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 — — μs -40°C to +85°C
SY11 TPWRT Power-up Timer Period 2
8
32
4
16
64
6
24
96
ms -40°C to +85°C, VDD =
5V
User programmable
SY12 TPOR Power-on Reset Delay
(4)
31030μs -40°C to +85°C
SY13 T
IOZ I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
—0.81.0μs—
SY20 T
WDT1
T
WDT2
TWDT3
Watchdog Timer Time-out Period
(No Prescaler)
0.6
0.8
1.0
2.0
2.0
2.0
3.4
3.2
3.0
ms
ms
ms
V
DD = 2.5V
V
DD = 3.3V, ±10%
VDD = 5V, ±10%
SY25 T
BOR Brown-out Reset Pulse Width
(3)
100 — — μsVDD ≤ VBOR (D034)
SY30 TOST Oscillator Start-up Timer Period — 1024 T OSC ——TOSC = OSC1 period
SY35 T
FSCM Fail-Safe Clock Monitor Delay — 500 900 μs -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 24-1 and Table 24-11 for BOR.
4: Characterized by design but not tested.
TABLE 24-22: 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 ≤ T
A ≤ +125°C for Extended
Param
No.
Symbol Characteristic
(1)
Min Typ Max Units Conditions
SY40 T
BGAP Band Gap Start-up Time — 40 65 µs 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.
VBGAP
Enable Band Gap
Band Gap
0V
(see Note)
Stable
Note: Set FBORPOR<7>.
SY40