PIC16F688
TABLE 14-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT DETECT REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature-40°C ≤ TA ≤ +125°C
Param
No.
Sym
TMCL
Characteristic
Min
Typ†
Max Units
Conditions
30
MCLR Pulse Width (low)
2
—
—
µs VDD = 5V, -40°C to +85°C
11
18
24
ms Extended temperature
31
32
TWDT
TOST
Watchdog Timer Time-out
Period (No Prescaler)
10
10
17
17
25
30
ms VDD = 5V, -40°C to +85°C
ms Extended temperature
Oscillation Start-up Timer
Period
—
1024TOSC
—
—
TOSC = OSC1 period
33*
34
TPWRT Power-up Timer Period
28*
TBD
64
TBD
132*
TBD
ms VDD = 5V, -40°C to +85°C
ms Extended Temperature
TIOZ
I/O High-impedance from
MCLR Low or Watchdog Timer
Reset
—
—
2.0
µs
BVDD
TBOD
Brown-out Detect Voltage
2.025
100*
—
—
2.175
—
V
35
Brown-out Detect Pulse Width
µs VDD ≤ BVDD (D005)
Legend: TBD = To Be Determined
*
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.
2004 Microchip Technology Inc.
Preliminary
DS41203B-page 149
MICROCHIP [ MICROCHIP ]
