PIC16F84A-20I/SS Microchip Technology, PIC16F84A-20I/SS Datasheet - Page 136
![IC MCU FLASH 1KX14 EE 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16F84A-20I/SS
Manufacturer Part Number
PIC16F84A-20I/SS
Description
IC MCU FLASH 1KX14 EE 20SSOP
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-20I/SS
Core Size
8-Bit
Program Memory Size
1.75KB (1K x 14)
Core Processor
PIC
Speed
20MHz
Peripherals
POR, WDT
Number Of I /o
13
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 ~ 85°C
Package / Case
20-SSOP
Controller Family/series
PIC16F
No. Of I/o's
13
Eeprom Memory Size
64Byte
Ram Memory Size
68Byte
Cpu Speed
20MHz
No. Of Timers
1
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
8
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000
Minimum Operating Temperature
- 40 C
Data Rom Size
64 B
Height
1.75 mm
Length
7.2 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4 V
Width
5.3 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPI3-DB16F84A - BOARD DAUGHTER ICEPIC3AC164307 - MODULE SKT FOR PM3 28SSOPAC164018 - MODULE SKT PROMATEII 20SSOP
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F84A-20I/SS
Manufacturer:
MICROCHIP
Quantity:
2 560
Part Number:
PIC16F84A-20I/SS
Manufacturer:
MIC
Quantity:
20 000
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- Download datasheet (3Mb)
PICmicro MID-RANGE MCU FAMILY
8.6
DS31008A-page 8-14
Initialization
Example 8-4
is the value to write into the interrupt enable register.
Example 8-5
before they are used. For debugging ease, it may help if macros are placed in other files that are
included at assembly time. This allows the source to be viewed without all the clutter of the
required macros. These files must be included before the macro is used, but it simplifies debug-
ging, if all include files are done at the top of the source file.
Example 8-7
saving and restoring of registers before the execution of the interrupt code.
Example 8-4: Initialization and Enabling of Interrupts
Example 8-5: Register Saving / Restoring as Macros
PIE1_MASK1
PUSH_MACRO
;
POP_MACRO
MOVWF
SWAPF
MOVWF
ENDM
SWAPF
MOVWF
SWAPF
SWAPF
ENDM
:
:
CLRF
CLRF
CLRF
BSF
MOVLW
MOVWF
BCF
BSF
shows the initialization and enabling of device interrupts, where PIE1_MASK1 value
shows a typical Interrupt Service Routine structure. This ISR uses macros for the
shows how to create macro definitions for functions. Macros must be defined
EQU B‘01101010’
STATUS
INTCON
PIR1
STATUS, RP0
PIE1_MASK1
PIE1
STATUS, RP0
INTCON, GIE
MACRO
W_TEMP
STATUS,W
STATUS_TEMP
MACRO
STATUS_TEMP,W
STATUS
W_TEMP,F
W_TEMP,W
; Bank0
; Disable interrupts and clear some flags
; Clear all flag bits
; Bank1
; This is the initial masking for PIE1
;
; Bank0
; Enable Interrupts
; This Macro Saves register contents
; Copy W to a Temporary Register
;
; Swap STATUS nibbles and place
;
; Save STATUS to a Temporary register
;
; End this Macro
; This Macro Restores register contents
; Swap original STATUS register value
;
; Restore STATUS register from
;
; Swap W_Temp nibbles and return
;
; Swap W_Temp to W to restore original
;
; End this Macro
; This is the Interrupt Enable
;
regardless of current bank
into W register
in Bank0
into W (restores original bank)
W register
value to W_Temp
W value without affecting STATUS
Register mask value
Example 8-6
1997 Microchip Technology Inc.
shows this structure.
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