PIC16F819 Microchip Technology Inc., PIC16F819 Datasheet - Page 135

• Manufacturer Part Number: PIC16F819
• Description: 18/20-pin Enhanced Flash Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

FIGURE 15-6:
FIGURE 15-7:
TABLE 15-3:
 2004 Microchip Technology Inc.
30
31*
32
33*
34
35
Param
No.
Watchdog
Note: Refer to Figure 15-3 for load conditions.
Oscillator
Time-out
Time-out
I/O pins
Internal
Internal
PWRT
MCLR
Reset
Reset
Timer
*
†
POR
V
V
T
T
T
T
T
T
DD
WDT
OST
IOZ
DD
MC
PWRT
BOR
These parameters are characterized but not tested.
Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Symbol
L
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET REQUIREMENTS
MCLR Pulse Width (Low)
Watchdog Timer Time-out Period
(no prescaler)
Oscillation Start-up Timer Period
Power-up Timer Period
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
Brown-out Reset Pulse Width
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
BROWN-OUT RESET TIMING
33
Characteristic
32
13.6
61.2
Min
100
—
—
2
V
BOR
1024 T
34
Typ†
16
72
—
—
—
30
OSC
Max
18.4
82.8
2.1
—
—
—
35
PIC16F818/819
Units
ms
ms
—
s
s
s
31
V
V
T
V
V
OSC
DD
DD
DD
DD
= 5V, -40°C to +85°C
= 5V, -40°C to +85°C
= 5V, -40°C to +85°C
= OSC1 period
V
BOR
Conditions
DS39598E-page 133
34
(D005)