PIC16F84A-20/P Microchip Technology, PIC16F84A-20/P Datasheet - Page 33

• Manufacturer Part Number: PIC16F84A-20/P
• Description: IC MCU FLASH 1KX14 EE 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-20/P

• Program Memory Type: FLASH
• Program Memory Size: 1.75KB (1K x 14)
• Package / Case: 18-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Eeprom Size: 64 x 8
• Ram Size: 68 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 68 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 13
• Number Of Timers: 1
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: I3-DB16F84A - BOARD DAUGHTER ICEPIC3DVA16XP180 - ADAPTER DEVICE FOR MPLAB-ICEAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.10.2
It should also be taken into account that under worst
case conditions (V
WDT Prescaler), it may take several seconds before a
WDT time-out occurs.
FIGURE 6-11:
TABLE 6-7:
2007h Config. bits
81h
Legend: x = unknown. Shaded cells are not used by the WDT.
Note 1: See Register 6-1 for operation of the PWRTE bit.
Addr
2001 Microchip Technology Inc.
Note:
2: See Register 6-1 and Section 6.12 for operation of the code and data protection bits.
OPTION_REG RBPU INTEDG
WDT PROGRAMMING
CONSIDERATIONS
Name
PSA and PS2:PS0 are bits in the OPTION_REG register.
SUMMARY OF REGISTERS ASSOCIATED WITH THE WATCHDOG TIMER
DD
= Min., Temperature = Max., Max.
WATCHDOG TIMER BLOCK DIAGRAM
WDT Timer
Bit 7
Enable Bit
(2)
WDT
From TMR0 Clock Source
Bit 6
(2)
(Figure 5-2)
T0CS
•
Bit 5
(2)
0
1
PSA
T0SE
Bit 4
M
U
X
(2)
PWRTE
Bit 3
PSA
0
(1)
Time-out
MUX
WDTE
8 - to -1 MUX
WDT
Bit 2
PS2
Postscaler
•
FOSC1
1
8
Bit 1
PS1
PSA
To TMR0 (Figure 5-2)
FOSC0
Bit 0
PS0
PIC16F84A
PS2:PS0
1111 1111 1111 1111
Power-on
Value on
Reset
(2)
DS35007B-page 31
Value on all
RESETS
other