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PIC16F72 Datasheet(PDF) 7 Page - Microchip Technology |
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PIC16F72 Datasheet(HTML) 7 Page - Microchip Technology |
7 / 136 page © 2007 Microchip Technology Inc. DS39597C-page 5 PIC16F72 1.0 DEVICE OVERVIEW This document contains device specific information for the operation of the PIC16F72 device. Additional infor- mation may be found in the PIC™ Mid-Range MCU Reference Manual (DS33023), which may be down- loaded from the Microchip website. The Reference Manual should be considered a complementary docu- ment to this data sheet, and is highly recommended reading for a better understanding of the device archi- tecture and operation of the peripheral modules. The PIC16F72 belongs to the Mid-Range family of the PIC devices. A block diagram of the device is shown in Figure 1-1. The program memory contains 2K words, which trans- late to 2048 instructions, since each 14-bit program memory word is the same width as each device instruction. The data memory (RAM) contains 128 bytes. There are 22 I/O pins that are user configurable on a pin-to-pin basis. Some pins are multiplexed with other device functions. These functions include: • External interrupt • Change on PORTB interrupt • Timer0 clock input • Timer1 clock/oscillator • Capture/Compare/PWM • A/D converter • SPI/I2C Table 1-1 details the pinout of the device with descriptions and details for each pin. FIGURE 1-1: PIC16F72 BLOCK DIAGRAM FLASH Memory 2K x 14 13 Data Bus 8 14 Program Bus Instruction reg Program Counter 8-Level Stack (13-bit) RAM File Registers 128 x 8 Direct Addr 7 RAM Addr(1) 9 Addr MUX Indirect Addr FSR reg STATUS reg MUX ALU W reg Power-up Timer Oscillator Start-up Timer Power-on Reset Watchdog Timer Instruction Decode & Control Timing Generation OSC1/CLKI OSC2/CLKO MCLR VDD, VSS Timer0 A/D Synchronous Serial Port PORTA PORTC RC0/T1OSO/T1CKI RC1/T1OSI RC2/CCP1 RC3/SCK/SCL RC4/SDI/SDA RC5/SDO RC6 RC7 8 8 Brown-out Reset Note 1: Higher order bits are from the STATUS register. CCP1 Timer1 Timer2 RA4/T0CKI RA5/AN4/SS RA3/AN3/VREF RA2/AN2 RA1/AN1 RA0/AN0 8 3 Program PORTB RB0/INT RB1 RB2 RB3 RB4 RB5 RB6/PGC RB7/PGD |
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