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PIC876 数据表(PDF) 7 Page - Microchip Technology |
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PIC876 数据表(HTML) 7 Page - Microchip Technology |
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7 / 218 page  2001 Microchip Technology Inc. DS30292C-page 5 PIC16F87X 1.0 DEVICE OVERVIEW This document contains device specific information. 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 website. 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. There are four devices (PIC16F873, PIC16F874, PIC16F876 and PIC16F877) covered by this data sheet. The PIC16F876/873 devices come in 28-pin packages and the PIC16F877/874 devices come in 40-pin packages. The Parallel Slave Port is not implemented on the 28-pin devices. The following device block diagrams are sorted by pin number; 28-pin for Figure 1-1 and 40-pin for Figure 1-2. The 28-pin and 40-pin pinouts are listed in Table 1-1 and Table 1-2, respectively. FIGURE 1-1: PIC16F873 AND PIC16F876 BLOCK DIAGRAM FLASH Program Memory 13 Data Bus 8 14 Program Bus Instruction reg Program Counter 8 Level Stack (13-bit) RAM File Registers 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/CLKIN OSC2/CLKOUT MCLR VDD, VSS PORTA PORTB PORTC RA4/T0CKI RA5/AN4/SS RB0/INT RC0/T1OSO/T1CKI RC1/T1OSI/CCP2 RC2/CCP1 RC3/SCK/SCL RC4/SDI/SDA RC5/SDO RC6/TX/CK RC7/RX/DT 8 8 Brown-out Reset Note 1: Higher order bits are from the STATUS register. USART CCP1,2 Synchronous 10-bit A/D Timer0 Timer1 Timer2 Serial Port RA3/AN3/VREF+ RA2/AN2/VREF- RA1/AN1 RA0/AN0 8 3 Data EEPROM RB1 RB2 RB3/PGM RB4 RB5 RB6/PGC RB7/PGD Device Program FLASH Data Memory Data EEPROM PIC16F873 4K 192 Bytes 128 Bytes PIC16F876 8K 368 Bytes 256 Bytes In-Circuit Debugger Low Voltage Programming |
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