PIC16F84AT-20E/SO Microchip Technology, PIC16F84AT-20E/SO Datasheet - Page 486
![IC MCU CMOS 20MHZ 1K FLSH 18SOIC](/photos/6/76/67656/150-18-soic_sml.jpg)
PIC16F84AT-20E/SO
Manufacturer Part Number
PIC16F84AT-20E/SO
Description
IC MCU CMOS 20MHZ 1K FLSH 18SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F688T-ISL.pdf
(688 pages)
2.PIC16F84A-04P.pdf
(88 pages)
3.PIC16F84A-04P.pdf
(6 pages)
Specifications of PIC16F84AT-20E/SO
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
POR, WDT
Number Of I /o
13
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
68 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
18-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Connectivity
-
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PICmicro MID-RANGE MCU FAMILY
26.1
DS31026A-page 26-2
Introduction
The Watchdog Timer (WDT) is a free running on-chip RC oscillator which does not require any
external components. The block diagram is shown in
from the device RC oscillator of the OSC1/CLKIN pin. This means that the WDT will run, even if
the clock on the OSC1 and OSC2 pins has been stopped, for example, by execution of a
instruction.
The Watchdog Timer (WDT) is enabled/disabled by a device configuration bit. If the WDT is
enabled, software execution may not disable this function.
Figure 26-1: Watchdog Timer Block Diagram
WDT Timer
Enable Bit
WDT
From TMR0 Clock Source
Note: PSA and PS2:PS0 are bits in the OPTION register.
0
1
PSA
M
U
X
0
Time-out
Figure
8 - to - 1 MUX
MUX
WDT
Postscaler
1
26-1. This RC oscillator is separate
8
1997 Microchip Technology Inc.
PSA
To TMR0
PS2:PS0
SLEEP
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