PIC16F876AI/SO 28/40-pin Enhanced FLASH Microcontrollers integrated semiconductor

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 available 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.

FIGURE 3-1: BLOCK WRITES TO FLASH PROGRAM MEMORY

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