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PIC16F874A Datasheet(PDF) 7 Page - Microchip Technology |
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PIC16F874A Datasheet(HTML) 7 Page - Microchip Technology |
7 / 234 page 2003 Microchip Technology Inc. DS39582B-page 5 PIC16F87XA 1.0 DEVICE OVERVIEW This document contains device specific information about the following devices: • PIC16F873A • PIC16F874A • PIC16F876A • PIC16F877A PIC16F873A/876A devices are available only in 28-pin packages, while PIC16F874A/877A devices are avail- able in 40-pin and 44-pin packages. All devices in the PIC16F87XA family share common architecture with the following differences: • The PIC16F873A and PIC16F874A have one-half of the total on-chip memory of the PIC16F876A and PIC16F877A • The 28-pin devices have three I/O ports, while the 40/44-pin devices have five • The 28-pin devices have fourteen interrupts, while the 40/44-pin devices have fifteen • The 28-pin devices have five A/D input channels, while the 40/44-pin devices have eight • The Parallel Slave Port is implemented only on the 40/44-pin devices The available features are summarized in Table 1-1. Block diagrams of the PIC16F873A/876A and PIC16F874A/877A devices are provided in Figure 1-1 and Figure 1-2, respectively. The pinouts for these device families are listed in Table 1-2 and Table 1-3. Additional information may be found in the PICmicro® Mid-Range Reference Manual (DS33023), which may be obtained from your local Microchip Sales Represen- tative or downloaded from the Microchip web site. The Reference Manual should be considered a complemen- tary document to this data sheet and is highly recom- mended reading for a better understanding of the device architecture and operation of the peripheral modules. TABLE 1-1: PIC16F87XA DEVICE FEATURES Key Features PIC16F873A PIC16F874A PIC16F876A PIC16F877A Operating Frequency DC – 20 MHz DC – 20 MHz DC – 20 MHz DC – 20 MHz Resets (and Delays) POR, BOR (PWRT, OST) POR, BOR (PWRT, OST) POR, BOR (PWRT, OST) POR, BOR (PWRT, OST) Flash Program Memory (14-bit words) 4K 4K 8K 8K Data Memory (bytes) 192 192 368 368 EEPROM Data Memory (bytes) 128 128 256 256 Interrupts 14 15 14 15 I/O Ports Ports A, B, C Ports A, B, C, D, E Ports A, B, C Ports A, B, C, D, E Timers 3333 Capture/Compare/PWM modules 2222 Serial Communications MSSP, USART MSSP, USART MSSP, USART MSSP, USART Parallel Communications — PSP — PSP 10-bit Analog-to-Digital Module 5 input channels 8 input channels 5 input channels 8 input channels Analog Comparators 2222 Instruction Set 35 Instructions 35 Instructions 35 Instructions 35 Instructions Packages 28-pin PDIP 28-pin SOIC 28-pin SSOP 28-pin QFN 40-pin PDIP 44-pin PLCC 44-pin TQFP 44-pin QFN 28-pin PDIP 28-pin SOIC 28-pin SSOP 28-pin QFN 40-pin PDIP 44-pin PLCC 44-pin TQFP 44-pin QFN |
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