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PIC16F648A Datasheet(PDF) 7 Page - Microchip Technology |
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PIC16F648A Datasheet(HTML) 7 Page - Microchip Technology |
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7 / 180 page  © 2009 Microchip Technology Inc. DS40044G-page 7 PIC16F627A/628A/648A 1.0 GENERAL DESCRIPTION The PIC16F627A/628A/648A are 18-pin Flash-based members of the versatile PIC16F627A/628A/648A family of low-cost, high-performance, CMOS, fully- static, 8-bit microcontrollers. All PIC® microcontrollers employ an advanced RISC architecture. The PIC16F627A/628A/648A have enhanced core features, an eight-level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data. The two-stage instruction pipeline allows all instructions to execute in a single- cycle, except for program branches (which require two cycles). A total of 35 instructions (reduced instruction set) are available, complemented by a large register set. PIC16F627A/628A/648A microcontrollers typically achieve a 2:1 code compression and a 4:1 speed improvement over other 8-bit microcontrollers in their class. PIC16F627A/628A/648A devices have integrated features to reduce external components, thus reducing system cost, enhancing system reliability and reducing power consumption. The PIC16F627A/628A/648A has 8 oscillator configurations. The single-pin RC oscillator provides a low-cost solution. The LP oscillator minimizes power consumption, XT is a standard crystal, and INTOSC is a self-contained precision two-speed internal oscillator. The HS mode is for High-Speed crystals. The EC mode is for an external clock source. The Sleep (Power-down) mode offers power savings. Users can wake-up the chip from Sleep through several external interrupts, internal interrupts and Resets. A highly reliable Watchdog Timer with its own on-chip RC oscillator provides protection against software lock- up. Table 1-1 shows the features of the PIC16F627A/628A/ 648A mid-range microcontroller family. A simplified block diagram of the PIC16F627A/628A/ 648A is shown in Figure 3-1. The PIC16F627A/628A/648A series fits in applications ranging from battery chargers to low power remote sensors. The Flash technology makes customizing application programs (detection levels, pulse genera- tion, timers, etc.) extremely fast and convenient. The small footprint packages makes this microcontroller series ideal for all applications with space limitations. Low cost, low power, high performance, ease of use and I/O flexibility make the PIC16F627A/628A/648A very versatile. 1.1 Development Support The PIC16F627A/628A/648A family is supported by a full-featured macro assembler, a software simulator, an in-circuit emulator, a low cost in-circuit debugger, a low cost development programmer and a full-featured programmer. A Third Party “C” compiler support tool is also available. TABLE 1-1: PIC16F627A/628A/648A FAMILY OF DEVICES PIC16F627A PIC16F628A PIC16F648A PIC16LF627A PIC16LF628A PIC16LF648A Clock Maximum Frequency of Operation (MHz) 20 20 20 20 20 20 Flash Program Memory (words) 1024 2048 4096 1024 2048 4096 Memory RAM Data Memory (bytes) 224 224 256 224 224 256 EEPROM Data Memory (bytes) 128 128 256 128 128 256 Timer module(s) TMR0, TMR1, TMR2 TMR0, TMR1, TMR2 TMR0, TMR1, TMR2 TMR0, TMR1, TMR2 TMR0, TMR1, TMR2 TMR0, TMR1, TMR2 Comparator(s) 222222 Peripherals Capture/Compare/ PWM modules 111111 Serial Communications USART USART USART USART USART USART Internal Voltage Reference Yes Yes Yes Yes Yes Yes Interrupt Sources 101010101010 I/O Pins 16 16 16 16 16 16 Features Voltage Range (Volts) 3.0-5.5 3.0-5.5 3.0-5.5 2.0-5.5 2.0-5.5 2.0-5.5 Brown-out Reset Yes Yes Yes Yes Yes Yes Packages 18-pin DIP, SOIC, 20-pin SSOP, 28-pin QFN 18-pin DIP, SOIC, 20-pin SSOP, 28-pin QFN 18-pin DIP, SOIC, 20-pin SSOP, 28-pin QFN 18-pin DIP, SOIC, 20-pin SSOP, 28-pin QFN 18-pin DIP, SOIC, 20-pin SSOP, 28-pin QFN 18-pin DIP, SOIC, 20-pin SSOP, 28-pin QFN All PIC® family devices have Power-on Reset, selectable Watchdog Timer, selectable code-protect and high I/O current capability. All PIC16F627A/628A/648A family devices use serial programming with clock pin RB6 and data pin RB7. |
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