原标题：Microchip Explorer 8开发板解决方案DM160228

　　microchip公司的Explorer 8开发板是用来评估和演示8位PIC MCU的多用途全功能最新开发平台,支持8/14/20/28/40引脚DIP和44/64/80引脚PIM安装的PIC MCU,支持多个调试和编程解决方案，包括PICktt™ 3、ICD 3 和 MPLAB® REAL ICE™ 在线仿真器,具有三个单独的电源如5V,3.3V 和可变 (1.5-4.5V)以及16 x 2 字符LCD 显示屏.本文介绍了PIC16LF1554/1559 8位PIC MCU主要特性,框图和Explorer 8开发板主要特性,主要元件分布图,电路图和PCB元件布局图.

　　The PIC16LF1554/1559 microcontrollers with Microchip enhanced mid-range core deliver unique on-chip features forthe design of mTouch® solutions and general purpose applications in 14/20-pin count packages. Two 10-bithigh-speed ADCs with automated hardware CVD modules connect to up to 17 analog channels to achieve a totalsampling rate of 600k samples per second. Combined with two PWMs and multiple communication peripherals, thismicrocontroller family is an excellent solution to implement low-power and noise-robust capacitive sensing and otherfront-end sampling applications with minimal software overhead.

　　PIC16LF1554/1559主要特性:

　　High-Performance RISC CPU

　　• Only 49 Instructions to Learn

　　• Operating Speed:

　　- DC – 32 MHz clock input

　　- DC – 125 ns instruction cycle

　　• Interrupt Capability with Automatic ContextSaving

　　• 16-Level Deep Hardware Stack with OptionalOverflow/Underflow Reset

　　• Direct,Indirect and Relative Addressing modes:

　　- Two full 16-bit File Select Registers (FSRs)

　　- FSRs can read program and data memory

　　Special Microcontroller Features

　　• Precision 16 MHz Internal Oscillator:

　　- Factory calibrated to ±1%, typical

　　- Software selectable frequency range from32 MHz to 31 kHz

　　• 31 kHz Low-Power Internal Oscillator

　　• 4x Phase-Locked Loop (PLL)

　　• Power-Saving Sleep mode

　　• Power-on Reset (POR)

　　• Power-up Timer (PWRT)

　　• BOR with Selectable Trip Point

　　• Low-Power Brown-Out Reset (LPBOR)

　　• Extended Watchdog Timer (WDT)

　　• In-Circuit Serial Programming™ (ICSP™) via TwoPins

　　• In-Circuit Debug (ICD) via Two Pins

　　• Enhanced Low-Voltage Programming (LVP)

　　• Operating Voltage Range:

　　- 1.8V to 3.6V

　　• Programmable Code Protection

　　• Self-Programmable under Software Control

　　eXtreme Low Power (XLP) Features

　　• Sleep Current:

　　- 30 nA @ 1.8V, typical

　　• Operating Current:

　　- 75 A @ 1 MHz, 1.8V, typical

　　• Low-Power Watchdog Timer Current:

　　- 500 nA @ 1.8V, typical

　　Peripheral Features

　　• Up to 17 I/O Pins and One Input-only Pin:

　　- High current sink/source for LED drivers

　　- Individually programmable interrupt-onchangepins

　　- Individually programmable weak pull-ups

　　• Timer0: 8-Bit Timer/Counter with 8-BitProgrammable Prescaler

　　• Enhanced Timer1:

　　- 16-bit timer/counter with prescaler

　　- External Gate Input mode

　　• Timer2 modules: 8-Bit Timer/Counter with 8-BitPeriod Register, Prescaler and Postscaler

　　• Two PWM modules

　　• Two Analog-to-Digital Converters (ADC):

　　- 10-bit resolution

　　- Up to 17 channels

　　- Simultaneous sampling on two ADCs

　　- Connect multiple channels together forsampling

　　- External conversion trigger

　　- Flexible analog channel selection

　　- Conversion during Sleep

　　- Fixed Voltage Reference as channel

　　- External pin as ADC positive reference

　　- Temp sensor channel input

　　• Voltage Reference module:

　　- Fixed Voltage Reference (FVR) with 1.024Vand 2.048V output levels

　　• Hardware Capacitive Voltage Divider (CVD):

　　- Double-sample conversions

　　- Two sets of result registers

　　- Inverted acquisition

　　- 7-bit precharge timer

　　- 7-bit acquisition timer

　　- Two guard ring output drives

　　- 30 pF adjustable sample and hold capacitorArray

　　• Master Synchronous Serial Port (MSSP) with SPIand I2C with:

　　- 7-bit address masking

　　- SMBus/PMBus™ compatibility

　　• Enhanced Universal Synchronous AsynchronousReceiver Transmitter (EUSART):

　　- RS-232, RS-485 and LIN compatible

　　- Auto-Baud Detect

　　- Auto-wake-up on start

　　图1.PIC16LF1554/1559框图

　　图2.PIC16LF1554/1559核框图

　　Explorer 8开发板

　　The Explorer 8 Development Board is one of the latest development boards forevaluating and demonstrating the capabilities and features of Microchip’s 8-bit PIC®MCUs. This board supports 8/14/20/28/40-pin DIP and 44/64/80-pin PIM-mounted PICMCUs.

　　This board is fully populated with two fixed and one variable power supply, a 16x2Character LCD module, a pair of mikroBUS™ Click™ board headers to accommodatea variety of plug-in modules, a pair of DigilentPmod™ connectors, an in-linecompletely configurable connector, PICtail™ connectors and a USB-to-serial/I2Cconverter. The Explorer 8 is fully compatible with the MPLAB® Code Configurator andMPLAB X v3.00 or later.

　　The Explorer 8 Development Board comes with the following:

　　• Explorer 8 Development Board (DM160228)

　　• Pre-programmed DSTEMP

　　• Micro USB cable

　　图3.Explorer 8开发板外形图

　　图4.Explorer 8开发板元件分布图

　　图4中的数字对应元件:

　　1. MCP2221 USB-to-UART/I2C serial converter (U3)

　　2. 16x2 Character LCD (LCD1)

　　3. MCP23S17 I/O Expander for LCD Interface (U4)

　　4. Eight blue LEDs (D1 to D8).

　　5. Male header pins for attaching Plug-in-Modules (U1A)

　　6. Socket for attaching 40-pin PIC MCUs (J8)

　　7. Socket for attaching 28-pin PIC MCUs (J13)

　　8. Socket for attaching 8/14/20-pin PIC MCUs (J10)

　　9. mikroBUS headers for attaching mikroBUS compatible boards (J32 and J35)

　　10. Two push button switches for external stimulus (S1 and S2)

　　11. PICtail Expansion Connectors for PICtail Daughter Boards (J3, J5, J11 and J28)

　　12. PICtail Plus Card Edge Modular Expansion Connectors for PICtail Plus Daughter Boards (J19)

　　13. Test Points for 5.0V (TP1 and TP7), 3.3V (TP6) and V_VAR (TP5). V_VAR is the variable voltage and is equal to the device VDD and its associated logic

　　14. 20-pin in-line expansion connector (J33)

　　15. 8 MHz crystal for device external oscillator (Y1)

　　16. DigilentPmod compatible connectors (J17 and J20)

　　17. 10 kΩ Potentiometer for analog inputs (R25)

　　18. Variable Power Indicator LED (D9)

　　19. 3.3V Power Indicator (LD2)

　　20. 5.0V Power Indicator (LD1)

　　21. 5.0V (U5), 3.3V (U1) and Variable (U2) power supplies

　　22. Barrel connector for 9V DC Supply (J1)

　　23. RJ11 connector for ICSP programming/debugging using REAL ICE and ICD 3(J26)

　　24. 6-pin male header for ICSP programming/debugging using PICkit 3 (J12)

　　25. Push button switch on MCLR for external Reset (S3)

　　26. Micro USB socket for USB communication and/or USB power (J18)

　　详情请见:

40001812B.pdf

40001761E.pdf