Microchip Technology MA330012 데이터 시트
©
2007 Microchip Technology Inc.
Preliminary
DS70165E-page 321
dsPIC33F
TABLE 26-20: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
(unless otherwise stated)
Operating temperature
-40°C
≤
T
A
≤
+85°C
Param
No.
Symbol
Characteristic
(1)
Min
Typ
(2)
Max
Units
Conditions
SY10
T
MC
L
MCLR Pulse Width (low)
2
—
—
μ
s
-40°C to +85°C
SY11
T
PWRT
Power-up Timer Period
0.75
1.5
3
6
6
12
24
48
96
24
48
96
1
2
4
8
2
4
8
16
32
64
32
64
128
1.25
2.5
5
10
20
40
80
20
40
80
160
ms
-40°C to +85°C
User programmable
User programmable
SY12
T
POR
Power-on Reset Delay
3
10
30
μ
s
-40°C to +85°C
SY13
T
IOZ
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
Low or Watchdog Timer Reset
—
0.8
1.0
μ
s
SY20
T
WDT
1
Watchdog Timer Time-out Period
(No Prescaler)
(No Prescaler)
1.8
2.0
2.2
ms
V
DD
= 5V, -40°C to +85°C
T
WDT
2
1.9
2.1
2.3
ms
V
DD
= 3V, -40°C to +85°C
SY30
T
OST
Oscillator Start-up Timer Period
—
1024 T
OSC
—
—
T
OSC
= OSC1 period
SY35
T
FSCM
Fail-Safe Clock Monitor Delay
—
500
900
μ
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:
Characterized by design but not tested.