PIC12F639 Microchip Technology, PIC12F639 Datasheet - Page 167

• Manufacturer Part Number: PIC12F639
• Description: (PIC12F635 / PIC12F636 / PIC12F639) 8/14-PIN FLASH-BASED / 8-BIT CMOS MICROCONTROLLERS WITH NANOWATT TECHNOLOGY
• Manufacturer: Microchip Technology

FIGURE 15-7:
TABLE 15-4:
© 2005 Microchip Technology Inc.
30
31
32
33*
34
35
36
Legend: TBD = To Be Determined
Param
No.
Reset (due to BOD)
Note 1: 64 ms delay only if PWRTE bit in Configuration Word register is programmed to ‘0’.
*
† Data in ‘Typ’ column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance
T
T
T
T
T
V
T
OST
WDT
IOZ
MC
PWRT
BOD
BOD
Sym
These parameters are characterized but not tested.
only and are not tested.
(Device in Brown-out Detect)
L
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT DETECT 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 Detect Voltage
Brown-out Detect Pulse Width
BROWN-OUT DETECT TIMING AND CHARACTERISTICS
V
DD
Characteristic
V
BOD
PIC12F635/PIC16F636/639
Preliminary
2.025
100*
TBD
Min
28*
10
10
11
—
—
2
35
1024 T
Typ†
TBD
18
17
17
64
—
—
—
—
OSC
2.175
132*
Max Units
TBD
2.0
24
25
30
—
—
—
ms
ms
ms
ms
ms
64 ms Time-out
—
V
(Device not in Brown-out Detect)
s
s
s
V
Extended temperature
V
Extended temperature
T
V
Extended Temperature
V
OSC
DD
DD
DD
DD
= 5.0V, -40°C to +85°C
= 5.0V, -40°C to +85°C
= 5.0V, -40°C to +85°C
= OSC1 period
V
BOD
(1)
Conditions
DS41232B-page 165
(D005)