{"id":6919,"date":"2026-06-22T02:06:32","date_gmt":"2026-06-22T02:06:32","guid":{"rendered":"https:\/\/materialparts.com\/pic16f1938-i-ss\/"},"modified":"2026-06-22T02:06:32","modified_gmt":"2026-06-22T02:06:32","slug":"pic16f1938-i-ss","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pic16f1938-i-ss\/","title":{"rendered":"PIC16F1938-I\/SS"},"content":{"rendered":"

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

The PIC16F1938-I\/SS from Microchip Technology is an 8-bit PIC microcontroller with 14KB Flash, 512B SRAM, 25 I\/O, and LCD driver in an SSOP-28 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n8-bit PIC Microcontroller with LCD Driver<\/td>\n<\/tr>\n
Max Frequency<\/td>\n32 MHz (internal oscillator)<\/td>\n<\/tr>\n
\u95ea\u5149\u706f<\/td>\n14 KB<\/td>\n<\/tr>\n
SRAM<\/td>\n512 bytes<\/td>\n<\/tr>\n
Data EEPROM<\/td>\n256 bytes<\/td>\n<\/tr>\n
I\/O Pins<\/td>\n25<\/td>\n<\/tr>\n
LCD Driver<\/td>\nYes (up to 96 segments)<\/td>\n<\/tr>\n
ADC<\/td>\n11 channels x 10-bit<\/td>\n<\/tr>\n
\u4ea4\u6d41<\/td>\n1x EUSART, 1x MSSP (SPI\/I2C)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n1.8V to 5.5V<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSSOP-28 (10.2 x 5.3 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C (I grade)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 14KB Flash with self-write capability<\/li>\n
  • Integrated LCD segment driver (up to 96 segments)<\/li>\n
  • 32 MHz internal oscillator<\/li>\n
  • CTMU for capacitive touch sensing<\/li>\n
  • Dual comparator with SR latch<\/li>\n
  • 512 bytes SRAM and 256 bytes EEPROM<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Segment LCD display products<\/li>\n
    • Home appliance controllers<\/li>\n
    • Capacitive touch interfaces<\/li>\n
    • Industrial instrumentation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PIC16F1938-I\/SS from Microchip Technology is an 8-bit PIC microcontroller with 14KB Flash, 512B SRAM, 25 I\/O, and LCD driver in an SSOP-28 package. Key Specifications Type 8-bit PIC Microcontroller with LCD Driver Max Frequency 32 MHz (internal oscillator) Flash 14 KB SRAM 512 bytes Data EEPROM 256 bytes I\/O Pins 25 LCD […]<\/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-6919","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, 14KB Flash, LCD Driver, SSOP-28","date_code":"","package_case":"SSOP-28 (10.2 x 5.3 x 1.75 mm)","in_stock":3456,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/41364A.pdf","price":"$1.85 @ 1ku","product_introduction":"The PIC16F1938-I\/SS from Microchip Technology is an enhanced mid-range 8-bit PIC microcontroller with integrated LCD segment driver in an SSOP-28 surface mount package. The 14KB Flash, 512 bytes SRAM, and 256 bytes EEPROM provide adequate resources for LCD-based instrument firmware. The LCD controller supports up to 96 segments with configurable duty cycle (static, 1\/2, 1\/3, 1\/4) and bias, directly driving segment-type LCD panels. The CTMU (Charge Time Measurement Unit) enables capacitive touch sensing. The 32 MHz internal oscillator provides precise timing without external components. The 11-channel 10-bit ADC and dual comparators support analog sensor interfaces. The device is a surface-mount equivalent of the PIC16F1936T-I\/SS with the same feature set.","working_principle":"The PIC16F1938 operates identically to the PIC16F1936T described previously, using the enhanced mid-range PIC core with 14-bit instruction word. The LCD controller generates multiplexed drive waveforms for segment LCD panels. During each LCD frame, the common lines are sequentially driven with bias voltages while the segment lines are set according to which segments should be visible. The CTMU provides capacitive touch sensing by measuring charge time. The internal 32 MHz oscillator is factory-calibrated and can be post-scaled to lower frequencies for power saving. The MSSP supports SPI and I2C for communication with external peripherals and sensors.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      LCD<\/td>COM0-COM3<\/td>Output<\/td>LCD common outputs<\/td><\/tr>
      LCD<\/td>SEG0-SEG23<\/td>Output<\/td>LCD segment outputs (shared with I\/O)<\/td><\/tr>
      Multiple<\/td>RA0-RA7, etc.<\/td>I\/O<\/td>25 programmable I\/O pins<\/td><\/tr>
      Analog<\/td>AN0-AN10<\/td>Input<\/td>11 ADC channels (shared with I\/O)<\/td><\/tr>
      Serial<\/td>TX\/RX<\/td>I\/O<\/td>EUSART serial port<\/td><\/tr>
      Serial<\/td>SDA\/SCL<\/td>I\/O<\/td>MSSP I2C<\/td><\/tr>
      Power<\/td>VDD\/VSS<\/td>Power<\/td>Supply and ground<\/td><\/tr><\/table>","application_scenarios":"
      • Digital thermostat with segment LCD, CTMU touch, and 14KB Flash<\/li>
      • Appliance controller with LCD display, I2C temperature sensor, and 11 ADC channels<\/li>
      • Industrial gauge with 96-segment LCD and analog sensor input<\/li>
      • Battery-powered meter reader with 1.8V minimum supply and LCD driver<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>PIC16F1936T-I\/SS<\/td>SSOP-28<\/td>Tape and reel variant<\/td><\/tr>
        Microchip<\/td>PIC16F1939-I\/PT<\/td>TQFP-44<\/td>More I\/O, more LCD segments<\/td><\/tr>
        Microchip<\/td>PIC16F1934-I\/SS<\/td>SSOP-28<\/td>No LCD driver, lower cost<\/td><\/tr>
        ST<\/td>STM8L052C6T6<\/td>LQFP-48<\/td>8-bit with LCD, ARM alternative<\/td><\/tr>
        Microchip<\/td>PIC16F1937-I\/SS<\/td>SSOP-28<\/td>28KB Flash upgrade<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6919","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=6919"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6919\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6919"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}