{"id":6757,"date":"2026-06-21T10:21:28","date_gmt":"2026-06-21T10:21:28","guid":{"rendered":"https:\/\/materialparts.com\/pic16f690-i-so\/"},"modified":"2026-06-21T10:21:28","modified_gmt":"2026-06-21T10:21:28","slug":"pic16f690-i-so","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pic16f690-i-so\/","title":{"rendered":"PIC16F690-I\/SO"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The PIC16F690-I\/SO from Microchip Technology is a 14-pin 8-bit flash microcontroller with 7 KB program memory, 256 bytes RAM, 12-channel 10-bit ADC, 2 comparators, EUSART, and MSSP (SPI\/I2C) in an SOIC-20 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Architecture<\/td>\nPIC 14-bit (8-bit data)<\/td>\n<\/tr>\n
Max Frequency<\/td>\n20 MHz<\/td>\n<\/tr>\n
Flash Memory<\/td>\n7 KB (2048 words x 14-bit)<\/td>\n<\/tr>\n
RAM<\/td>\n256 bytes<\/td>\n<\/tr>\n
EEPROM<\/td>\n256 bytes<\/td>\n<\/tr>\n
I\/O Pins<\/td>\n12<\/td>\n<\/tr>\n
ADC<\/td>\n12-channel, 10-bit<\/td>\n<\/tr>\n
Comparators<\/td>\n2<\/td>\n<\/tr>\n
\u4ea4\u6d41<\/td>\nEUSART, MSSP (SPI\/I2C)<\/td>\n<\/tr>\n
PWM<\/td>\n1 CCP module<\/td>\n<\/tr>\n
Operating Voltage<\/td>\n2.0 V to 5.5 V<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-20 (12.8 x 7.5 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to 85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Precision internal oscillator (8 MHz, software selectable)<\/li>\n
  • 12-channel 10-bit ADC with programmable references<\/li>\n
  • Two analog comparators with programmable references<\/li>\n
  • EUSART with auto-baud detection<\/li>\n
  • MSSP for SPI and I2C master\/slave<\/li>\n
  • 256 bytes EEPROM data memory<\/li>\n
  • ICSP and ICD programming and debugging<\/li>\n
  • Enhanced low-power modes with WDT and BOR<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Handheld and battery-operated devices<\/li>\n
    • Automotive accessory control<\/li>\n
    • Home appliances and consumer electronics<\/li>\n
    • Sensor interface and data acquisition<\/li>\n
    • Serial communication bridge applications<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PIC16F690-I\/SO from Microchip Technology is a 14-pin 8-bit flash microcontroller with 7 KB program memory, 256 bytes RAM, 12-channel 10-bit ADC, 2 comparators, EUSART, and MSSP (SPI\/I2C) in an SOIC-20 package. Key Specifications Architecture PIC 14-bit (8-bit data) Max Frequency 20 MHz Flash Memory 7 KB (2048 words x 14-bit) RAM 256 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,25],"tags":[],"chip_brand":[134],"class_list":["post-6757","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-mcu","chip_brand-microchip"],"acf":{"brief_explanation":"8-bit PIC MCU, 20MHz, 7KB Flash, 256B RAM, 10-bit ADC, SOIC-20","date_code":"","package_case":"SOIC-20 (12.8 x 7.5 x 2.3 mm)","in_stock":9432,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/41262E.pdf","price":"$1.68 @ 1ku","product_introduction":"The PIC16F690-I\/SO from Microchip Technology is a versatile 8-bit flash microcontroller from the PIC16F family featuring 7 KB of program memory, 256 bytes of RAM, and 256 bytes of EEPROM. It integrates a rich set of peripherals including a 12-channel 10-bit ADC, two comparators, an EUSART with auto-baud detection, and an MSSP module supporting both SPI and I2C communication. The precision internal 8 MHz oscillator eliminates the need for external clock components. The device supports In-Circuit Serial Programming (ICSP) and In-Circuit Debugging (ICD), enabling firmware development without removing the device from the target board.","working_principle":"The PIC16F690-I\/SO uses the PIC16 enhanced RISC architecture with a 14-bit instruction word and 8-bit data paths. The CPU executes most instructions in a single cycle at 20 MHz (200 ns). The 7 KB flash memory stores the program, while 256 bytes of RAM serve as data storage and 256 bytes of EEPROM provide non-volatile data retention. The 10-bit ADC uses a successive approximation register (SAR) architecture with programmable acquisition time. The EUSART supports asynchronous serial communication with auto-baud detection, while the MSSP supports SPI (master\/slave) and I2C (master\/slave) protocols. The two comparators can be configured with internal or external reference voltages and can trigger interrupts. The CCP module provides capture, compare, and PWM functions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Positive supply<\/td><\/tr>
      2<\/td>RA5\/T1CKI<\/td>I\/O<\/td>Port A, Timer1 clock input<\/td><\/tr>
      3<\/td>RA4\/AN3<\/td>I\/O<\/td>Port A, ADC channel 3<\/td><\/tr>
      4<\/td>RA3\/MCLR<\/td>I\/O<\/td>Port A, Master clear \/ programming<\/td><\/tr>
      5<\/td>RC5<\/td>I\/O<\/td>Port C<\/td><\/tr>
      6<\/td>RC4<\/td>I\/O<\/td>Port C, MSSP SDA\/SCK<\/td><\/tr>
      7<\/td>RC3<\/td>I\/O<\/td>Port C, MSSP SCL\/SCK<\/td><\/tr>
      8<\/td>RC2\/AN6<\/td>I\/O<\/td>Port C, ADC channel 6<\/td><\/tr>
      9<\/td>RC1\/AN5<\/td>I\/O<\/td>Port C, ADC channel 5<\/td><\/tr>
      10<\/td>RC0\/AN4<\/td>I\/O<\/td>Port C, ADC channel 4<\/td><\/tr>
      11<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      12<\/td>RB7<\/td>I\/O<\/td>Port B, ICSP data<\/td><\/tr>
      13<\/td>RB6<\/td>I\/O<\/td>Port B, ICSP clock<\/td><\/tr>
      14<\/td>RB5<\/td>I\/O<\/td>Port B, T1G<\/td><\/tr>
      15<\/td>RB4\/AN10<\/td>I\/O<\/td>Port B, ADC channel 10<\/td><\/tr>
      16<\/td>RB3\/AN9<\/td>I\/O<\/td>Port B, ADC channel 9, CCP1<\/td><\/tr>
      17<\/td>RB2\/AN8<\/td>I\/O<\/td>Port B, ADC channel 8<\/td><\/tr>
      18<\/td>RB1\/AN7<\/td>I\/O<\/td>Port B, ADC channel 7<\/td><\/tr>
      19<\/td>RB0\/INT<\/td>I\/O<\/td>Port B, External interrupt<\/td><\/tr>
      20<\/td>RA0\/AN0<\/td>I\/O<\/td>Port A, ADC channel 0<\/td><\/tr><\/table>","application_scenarios":"
      • Handheld battery-operated measurement instruments<\/li>
      • Automotive accessory and lighting control modules<\/li>
      • Home appliance control with serial communication<\/li>
      • Multi-channel sensor data acquisition systems<\/li>
      • I2C\/SPI communication bridge and protocol converter<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>PIC16F689-I\/SO<\/td>SOIC-20<\/td>Similar, less ADC channels<\/td><\/tr>
        Microchip<\/td>PIC16F690-I\/P<\/td>DIP-20<\/td>Through-hole version<\/td><\/tr>
        Microchip<\/td>PIC16F1829-I\/SO<\/td>SOIC-20<\/td>Enhanced, more peripherals<\/td><\/tr>
        Atmel\/Microchip<\/td>ATtiny4313-20SU<\/td>SOIC-20<\/td>AVR, 2KB Flash, 20MHz<\/td><\/tr>
        STMicroelectronics<\/td>STM8S003F3P6<\/td>TSSOP-20<\/td>8-bit, 8KB Flash, SPI\/I2C<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6757"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6757\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6757"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}