RFPIC12C509AG Datasheet, PDF (86/104 Pages) Microchip Technology – 18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter

rfPIC12C509AG/509AF
FIGURE 11-6:
RESET, WATCHDOG TIMER AND DEVICE RESET TIMER
VDD
MCLR
Internal
POR
32
DRT
Timeout
(Note 2)
Internal
RESET
Watchdog
Timer
Reset
I/O pin
(Note 1)
30
32
32
31
34
34
Note 1: I/O pins must be taken out of hi-impedance mode by enabling the output drivers in software.
2: Runs in MCLR or WDT Reset only in XT and LP modes.
TABLE 11-6: RESET, WATCHDOG TIMER, AND DEVICE RESET TIMER
Standard Operating Conditions (unless otherwise specified)
AC Characteristics Operating Temperature
–40°C ≤ TA ≤ +85°C (industrial)
Operating Voltage VDD range is described in Section 11.1
Parameter
No.
Sym
Characteristic
Min Typ⁽¹⁾ Max Units
Conditions
30
TmcL MCLR Pulse Width (low)
2000* — — ns VDD = 5 V
31
Twdt Watchdog Timer Time-out Period 9* 18* 30* ms VDD = 5 V (Commercial)
(No Prescaler)
32
TDRT Device Reset Timer Period⁽²⁾
9* 18* 30* ms VDD = 5 V (Commercial)
34
TioZ I/O Hi-impedance from MCLR Low — — 2000* ns
* These parameters are characterized but not tested.
Note 1: Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design
guidance only and are not tested.
2: See Table 13-6.
DS70031A-page 84
Preliminary
© 2001 Microchip Technology Inc.