PIC16LF720_11 Datasheet, PDF (201/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F720/721
TABLE 23-4: RESET, WATCHDOG TIME, OSCILLATOR START-UP TIMER, POWER-UP TIMER,
AND BROWN-OUT RESET PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C TA +125°C
Param
No.
Sym.
Characteristic
Min. Typ† Max. Units
Conditions
30* TMCL MCLR Pulse Width (low)
2
—
— s VDD = 5V, -40°C to +85°C
5
—
—
s VDD = 5V⁽¹⁾
31 TWDT Standard Watchdog Timer Time-out 10 18 27 ms VDD = 3.3V-5V, -40°C to +85°C
Period (No Prescaler)⁽²⁾
10
18
33 ms VDD = 3.3V-5V⁽¹⁾
33* TPWRT Power-up Timer Period, PWRTE = 0 40 65 140 ms
34* TIOZ
I/O high-impedance from MCLR Low —
or Watchdog Timer Reset
— 2.0 s
35 VBOR Brown-out Reset Voltage
1.80 1.9 2.1 V
36* VHYST Brown-out Reset Hysteresis
0
25 50 mV
37* TBORDC Brown-out Reset DC Response
Time
1
3
5 s VDD  VBOR, -40°C to +85°C
10
VDD  VBOR
* 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.
Note 1: Voltages above 3.6V require that the regulator be enabled.
2: Design Target. If unable to meet this target, the maximum can be increased, but the minimum cannot be
changed.
FIGURE 23-9:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
T0CKI
40
41
42
T1CKI
TMR0 or
TMR1
45
46
47
49
 2011 Microchip Technology Inc.
Preliminary
DS41430B-page 201