PIC16F84A-04/P Microchip Technology Inc., PIC16F84A-04/P Datasheet - Page 33
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PIC16F84A-04/P
Manufacturer Part Number
PIC16F84A-04/P
Description
18 PIN, 1.75 KB FLASH, 68 RAM, 13 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F84A-04P.pdf
(88 pages)
Specifications of PIC16F84A-04/P
Cpu Speed
5 MIPS
Eeprom Memory
64 Bytes
Input Output
13
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
1.75K Bytes
Ram Size
68 Bytes
Speed
20 MHz
Timers
1-8-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F84A-04/P
Manufacturer:
MICROCHIP
Quantity:
1 450
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