MCU之Microchip PIC16F17146 Curiosity NANO Evaluation Kit评测报告

对比完 RISC(Proprietary) 与 RISC-V(Open Source),来点 Microchip 的 PIC16F17146 Curiosity Nano(Revision 4 has PIC16F17146 rev B2) Evaluation Kit的实测：

一、综述

这块板是多层PCB设计，大量使用SMD(Surface Mounted Devices), 使整板轻而小(51mm20mm5mm，包括按钮开关高度), 整体才大拇指大小。既可独立使用也可对外输出或作为模块快捷组合，板载最重要的有:

1. Debugger ATSAMD21E18A-U: 32bit MCU, ARM Cortex series, come from Microchip;
2. on board MCU PIC16F17146-6N: 8bit MCU, PIC series, comefrom Microchip;
3. Micro USB对外Interfere，如果是最新的 Type-C 就更好了;
4. 32.768KHz的晶体震荡器 VMK3-9001-32K7680000TR ;
5. 两个板载LED:
   
   靠近Micro USB接头的是Power/Status 电源与状态指示LED
   
   靠近User Switch的是User LED(LED0)只是对BUS/板载PIC MCU的Power/Status
6. 一枚机械按钮常开状态的开关 User Switch, 对Target Regulator的供电管理 5V Power BUS 和 PIC MCU的供电进行控制7. 带防短路电流检测与保护功能，以及，因此可以放心的使用。
7. VBUS Output Pin 有对外供电总线输出功能(4.4V-5.25V, 1A电流能力, 带PTC保险丝)
8. Debugger通过调整PCB线路，不仅可以对板载 PIC16F17146 MCU还可以对外部设备进行Programming与Debugging.
9. Pin-Headers 排针方便插接Microchip的积木式组合Base Board基板。

Microchip官方有提供本板的User Guide应用指导文档、 Schematic电路图、Assembly Drawing组装图、Pinout Mapping对外端口映射图，以及其它文档与资源。

总体上定位清晰、目标明确、有系统设计思想、兼容搭积木模组化、全面、美观、实用、多功能、可扩展、节能、成本有管理、精心选用材料(大多数Microchip自家的系列)、配套软硬件齐全、文档完善。

体现Microchip公司总体的战略、文化、生态建设、用户社群与市场理念、公司管理与组织协作、软硬件系统设计、工程实施、生产制造，全球交付等的落实。

二、Board对两块MCU的设计对比:

Debugger用的 32bit ATSAMD21E18A-U 计算性能、存储能力、GPIO数 要比 on board 8bit PIC16F17146-6N 强太多，只是 PIC16F17146-6N 功能更全，而且是本Evaluation Kit设计的主角而已。

实际这完全是一块板载32bit ARM Cortex RISC MCU 与 8bit PIC MCU都可以同时独立使用的开发板！

因为 Debugger是一枚更强大的MCU，可以 Update firmware, 而且 通过 线路调整(剪断板背面的Programming and Debugging Connections to Debugger GPIO straps 就可以独立对外)，不仅可以对 on board PIC16F17146-6N MCU 还可以对外部的 MCU 进行 Programming 与 debugging，成为一块独立的 烧录器 与 编程器。

三、Microchip官方更是提供商业级的:

User Guide/Mannual and other document文档；

商业级用户技术支持

Altium 的PCB电路设计文件，以及GITHUB hosted 的 多个示范应用 Source Code 都有

完整的全套 MPLAB 软体：开发X IDE、商业编译器XC Compilers、MCC(Code Configurator, 自动生成驱动与硬件抽象层C Source文件)、调试Debugger(例如MPLAB PICkit series)、可视化操控的 Data Visualizer、MPLAB Discover社会化/社交化项目协作的可以方便找到 collateral 和 example projects …

Microchip Xpress云端快速的开放环境www.mplab-xpresside.microchip.com/；

Microchip的 Sample Store在线申请 Sample；

直营的 Microchip 在线网上商店，全球可以提交订单采购。

Microchip官方甚至连用 Altium 设计的PCB电路设计项目文件和BOM物料单，以及GITHUB hosted 的 多个示范应用都有.

四、实拍与图片：

开箱: 两个防静电包:主PCB板+排针@PIC16F17146 Curiosity NANO Evaluation Kit

主PCB板正面照@PIC16F17146 Curiosity NANO Evaluation Kit

主PCB板背面照@PIC16F17146 Curiosity NANO Evaluation Kit

主PCB板连Micro USB供电@PIC16F17146 Curiosity NANO Evaluation Kit

32bit MCU: ATSAMD21E18A-U@主PCB板@PIC16F17146 Curiosity NANO Evaluation Kit

8bit MCU: PIC16F17146-6N@主PCB板@PIC16F17146-6N Curiosity NANO Evaluation Kit

Overview@主PCB板@PIC16F17146 Curiosity NANO Evaluation Kit

Quick Start快速启动应用@User Guide@PIC16F17146 Curiosity NANO Evaluation Kit

PIC16F17146-6N.Schematic@User Guide@PIC16F17146 Curiosity NANO Evaluation Kit

ATSAMD21E18A-U.Schematic@User Guide@PIC16F17146 Curiosity NANO Evaluation Kit

五、参考文献：

Evaluation Kit: PIC16F17146 curiosity NANO

Debugger: ATSAMD21E18A-U:32bit MCU, ARM

MCU: PIC16F17146-6N, 8bit MCU, PIC series

https://www.microchip.com/en-us/product/ATSAMD21E18

ATSAMD21E18A-U: 32-bit MCU, ARM Cortex-M0+ based Flash MCU

Low-Power, 32-bit Cortex-M0+ MCU with Advanced Analog and PWM

Parametrics

• Part Family: SAMD21
• CPU Type:    Cortex-M0+
• MaxSpeed (MHz):    48
• SRAM (KB):   32
• Program Memory Type:     Flash
• Program Memory Size (KB):      256
• Temp. Range Min. to Max.:  [-40, 125]
• Operation Voltage Min. to Max.(V):     [1.62, 3 63]
• Direct Memory Access (DMA) Channels: 12
• SPI:   4 -SPI
• I2C:   4
• UART:  4
• Crypto Engine:     No
• Internal Oscillator:     32khz, 32Khz ULP, 8Mhz
• Pin Count:   32

Product Features

• Single-cycle hardware multiplier
• Micro Trace Buffer
• 256KB in-system self-programmable Flash
• 32KB SRAM Memory
• Power-on reset (POR) and brown-out detection (BOD)
• Internal and external clock options with 48MHDigital Frequency Locked Loop (DFLL48M) and 48MHto 96MHFractional
• External Interrupt Controller (EIC)
• 16 external interrupts
• One non-maskable interrupt
• Two-pin Serial Wire Debug (SWD) programming, test and debugging interface
• Drop in compatible with SAM D20
• Idle and standby sleep modes
• SleepWalking peripherals
• 12-channel Direct Memory Access Controller (DMAC)
• 12-channel Event System
• One 16-bit TC with compare/capture channels
• One 8-bit TC with compare/capture channels
• One 32-bit TC with compare/capture channels, by using two TCs
• Up to four compare channels with optional complementary output
• Generation of synchronized pulse width modulation (PWM) pattern across port pins
• Deterministic fault protection, fast decay and configurable dead-time between complementary output
• Dithering that increase resolution with up to 5 bit and reduce quantization error
• 32-bit Real Time Counter (RTC) with clock/calendar function
• Watchdog Timer (WDT)
• CRC-32 generator
• Embedded device function
• Eight endpoints
• USART with full-duplex and single-wire half-duplex configuration
• I2C Bus up to 3.4MHz
• SMBUS/PMBUS
• SPI
• LIN client
• Differential and single-ended input
• 1/2x to 16x programmable gain stage
• Automatic offset and gain error compensation
• Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution
• 10-bit, 350ksps Digital-to-Analog Converter (DAC)
• Two Analog Comparators (AC) with window compare function
• 256-channel capacitive touch and proximity sensing
• 26 GPIO pins
• 32-pin TQSP, QFN, WLCSP
• 1.62V – 3.63V

A low-power, high-performance Microchip's ARM Cortex-M0+ based Flash microcontroller, the ATSAMD21E18 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:

• 256KB of flash and 32KB of SRAM
• Up to 48MHz operating frequency
• Four serial communication modules (SERCOM) configurable as UART/USART, SPI or I2C
• three 16-bit timer/counters
• 32-bit Real-Time Clock and calendar
• 18 PWM channels
• one 14-channel 12-bit ADC
• one 10-bit DAC
• Full Speed USB Device and embedded Host
• Support for up to 60 touch channels
• 1.62V to 3.63V power supply
• Easy pin migration to SAMD21G and SAMD21J devices
• Supported by MPLAB X IDE and MPLAB Harmony.

Functional Safety

supports the ISO 26262 (ASIL B), IEC 61508 (SIL 2) and IEC 60730 (Class B) functional safety standards.

· The Functional Safety Manual, FMEDA and information on the Diagnostic Software are available under NDA through the request form on the 32-bit Microcontrollers Functional Safety web page.

· To request any information about the SIL 2 STL, please fill out and submit the request form on Industrial Safety Self-Test Library web page.

· Learn more about 32-bit MCUs with Functional Safety capabilities including device hardware and certified software libraries.

https://www.microchip.com/en-us/product/PIC16F17146

PIC16F17146: 8-bit RISC 32MHz Full-Featured 20Pin MCU

The PIC16F171xx family’s advanced analog peripherals are specifically well-suited for raw sensor applications requiring signal gain or filtering.

It is the first product family to offer a low-noise Operational Amplifier (Op-Amp), a 12-bit differential ADC with Computation (ADCC). it also includes two 8-bit Digital-to-Analog Converters (DAC), up to four 16-bit Pulse-Width Modulation (PWM) peripherals, and many more waveform control and communication peripherals.

This small form factor, feature-rich device is well suited for low-cost, energy-efficient analog sensor applications with higher resolution requirements.

Parametrics:

• CPU Speed (MIPS/DMIPS):  8
• Data EEPROM (bytes):     256
• Program Memory Type:     Flash
• Program Memory Size (KB):      28
• Timers:      2 x 8-bit - 2 x 16-bit
• Stand alone PWM:   2
• Number of ADCs:    1
• Diff ADC Inputs:   17
• ADC Channels:      17
• Max ADC Resolution (bits):     12
• Number of Comparators:   2
• Temp. Range Min. to Max. :  [-40, 125]
• Operation Voltage Min. to Max(V):     [1.8, 5.5]
• Low Power:   Yes
• I2C:   0 -I2C
• Pin Count:   20

Product Features

• Enhanced Mid-range Core with 49 Instructions, 16 Stack Levels
• Flash Program Memory with Self Read/Write Capability
• eXtreme Low Power (XLP)
• IDLE and DOZE low power modes
• Peripheral Module Disable (PMD)
• Peripheral Pin Select (PPS)
• 12-bit Differential Analog-to-Digital Converter with Computation (ADCC)
• 1x Op-Amp
• 2x Capture/Compare/PWM (CCP)
• 2x 16-bit PWM with Dual Outputs
• 1x 8-bit Internal Digital-to-Analog Converters (DAC)
• 1x 8-bit External/Buffered Digital-to-Analog Converter (DAC)
• x2 Analog Comparators (AC)
• x4 Configurable Logic Cells (CLC)
• Flash CRC
• 1x NCO
• 1x CWG
• Zero-Cross Detect (ZCD)
• 2x EUSART(with LIN support)
• 2x MSSP (I2C or SPI)
• 1x 8/16-bit Timer (TMR0)
• 1x 16-bit Timer (TMR1)
• 1x 8-bit Timer (TMR2)
• Enhanced Power-On/Off-Reset
• Programmable Brown-Out Reset (BOR) with fast recovery