PIC16F84A-20/P Microchip Technology, PIC16F84A-20/P Datasheet - Page 144
PIC16F84A-20/P
Manufacturer Part Number
PIC16F84A-20/P
Description
IC MCU FLASH 1KX14 EE 18DIP
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 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F84A-20/P
Manufacturer:
MICROCHI
Quantity:
12 240
Company:
Part Number:
PIC16F84A-20/P
Manufacturer:
MICROCHI
Quantity:
12 240
Company:
Part Number:
PIC16F84A-20/P
Manufacturer:
MICROCHIP
Quantity:
2
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PICmicro MID-RANGE MCU FAMILY
9.2
DS31009A-page 9-4
PORTA and the TRISA Register
The RA4 pin is a Schmitt Trigger input and an open drain output. All other RA port pins have TTL
input levels and full CMOS output drivers. All pins have data direction bits (TRIS registers) which
can configure these pins as output or input.
Setting a TRISA register bit puts the corresponding output driver in a hi-impedance mode. Clear-
ing a bit in the TRISA register puts the contents of the output latch on the selected pin(s).
Example 9-1: Initializing PORTA
Figure 9-2: Block Diagram of RA3:RA0 and RA5 Pins
WR PORT
WR TRIS
RD PORT
Data bus
CLRF
CLRF
BSF
MOVLW
MOVWF
To Peripheral Module(s)
Note: I/O pin has protection diodes to V
STATUS
PORTA
STATUS, RP0
0xCF
TRISA
Data Latch
TRIS Latch
D
CK
D
CK
RD TRIS
Q
Q
Q
Q
; Bank0
; Initialize PORTA by clearing output
;
; Select Bank1
; Value used to initialize data direction
; PORTA<3:0> = inputs PORTA<5:4> = outputs
;
data latches
TRISA<7:6> always read as '0'
DD
and V
Q
SS
EN
.
D
V
V
P
N
DD
SS
Analog
input
mode
1997 Microchip Technology Inc.
TTL
or ST
input
buffer
I/O pin
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