Microchip Technology MA240017 数据表
2008-2011 Microchip Technology Inc.
DS39927C-page 239
PIC24F16KA102 FAMILY
FIGURE 29-8:
BAUD RATE GENERATOR OUTPUT TIMING
TABLE 29-28: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 1.8V to 3.6V
(unless otherwise stated)
(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
Min.
Typ
Max.
Units
Conditions
SY10
TmcL
MCLR Pulse Width (low)
2
—
—
s
SY11
T
PWRT
Power-up Timer Period
50
64
90
ms
SY12
T
POR
Power-on Reset Delay
1
5
10
s
SY13
T
IOZ
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
Low or Watchdog Timer Reset
—
—
100
ns
SY20
T
WDT
Watchdog Timer Time-out Period
0.85
1.0
1.15
ms
1.32 prescaler
3.4
4.0
4.6
ms
1:128 prescaler
SY25
T
BOR
Brown-out Reset Pulse Width
1
—
—
s
SY35
T
FSCM
Fail-Safe Clock Monitor Delay
—
2
2.3
s
SY45
T
RST
Configuration Update Time
—
20
—
s
SY55
T
LOCK
PLL Start-up Time
—
1
—
ms
SY65
T
OST
Oscillator Start-up Time
—
1024
—
T
OSC
SY75
T
FRC
Fast RC Oscillator Start-up Time
—
1
1.5
s
SY85
T
LPRC
Low-Power Oscillator Start-up
Time
Time
—
—
100
s
Note 1:
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
BCLKx
UxTX
T
BLD
T
BHD
BRGx + 1 * T
CY
T
LW
T
HW