PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 502

• Manufacturer Part Number: PIC16F877-20/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-20/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
27.2.1
DS31027A-page 27-6
MPASM’s CONFIG Directive
Microchip’s assembler, MPASM, has a nice feature that allows you to specify, in the source code
file, the selected states of the configuration bits for this program. This ensures that when pro-
gramming a device for an application the required configuration is also programmed. This mini-
mizes the risk of programming the wrong device configuration, and wondering why it no longer
works in the application.
Example 27-1
Example 27-1:Using the CONFIG Directive, a Source File Template
The Symbols that are currently in the Microchip Device Header files that make using the CONFIG
directive straight forward are shown in
please refer to that device’s Microchip Include file.
;
;
;
;
; Specify Device Configuration Bits
;
;
RESET_ADDR
Note:
LIST
Revision History
#INCLUDE
#INCLUDE
#INCLUDE
__CONFIG
org
end
As long as the correct device is specified (in the LIST and INCLUDE file directives),
the correct polarity of all bits is ensured.
0x00
show a template for using the CONFIG directive.
p = p16C77
:
<P16C77.INC>
<MY_STD.MAC>
<APP.MAC>
_XT_OSC & _PWRTE_ON & _BODEN_OFF & _CP_OFF & _WDT_ON
; Start of Program Memory
; First instruction to execute after a reset
; List Directive,
Table
; Microchip Device Header File
; File which includes my standard macros
; File which includes macros specific
;
to this application
27-1. For the symbols available for your device,
1997 Microchip Technology Inc.