{"id":7819,"date":"2026-06-27T03:41:08","date_gmt":"2026-06-27T03:41:08","guid":{"rendered":"https:\/\/materialparts.com\/pic18f452-i-p-2\/"},"modified":"2026-06-27T03:41:08","modified_gmt":"2026-06-27T03:41:08","slug":"pic18f452-i-p-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pic18f452-i-p-2\/","title":{"rendered":"PIC18F452-I\/P"},"content":{"rendered":"

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

The PIC18F452-I\/P is a high-performance 8-bit PIC18 microcontroller from Microchip Technology with 32KB Flash, 1.5KB RAM, 256B EEPROM, 10-bit ADC, and multiple communication interfaces in a 40-pin PDIP package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u6838\u5fc3<\/td>\nPIC18 8-bit, up to 40 MHz<\/td>\n<\/tr>\n
Flash Memory<\/td>\n32 KB<\/td>\n<\/tr>\n
RAM<\/td>\n1536 bytes<\/td>\n<\/tr>\n
Data EEPROM<\/td>\n256 bytes<\/td>\n<\/tr>\n
I\/O Pins<\/td>\n34<\/td>\n<\/tr>\n
ADC<\/td>\n10-bit, 8 channels<\/td>\n<\/tr>\n
\u8ba1\u65f6\u5668<\/td>\n4 (2 x 8-bit, 2 x 16-bit)<\/td>\n<\/tr>\n
CCP Modules<\/td>\n2<\/td>\n<\/tr>\n
\u4ea4\u6d41<\/td>\nMSSP (SPI\/I2C), EUSART<\/td>\n<\/tr>\n
Comparators<\/td>\n0<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n4.2 V to 5.5 V (standard), 2.0 V (extended)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C (Industrial)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nPDIP-40 (600 mil)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • High-performance PIC18 core with 8×8 hardware multiplier<\/li>\n
  • 32KB self-programmable Flash with 100,000 erase\/write cycles<\/li>\n
  • 256-byte EEPROM with 1,000,000 erase\/write cycles<\/li>\n
  • 10-bit ADC with 8 input channels<\/li>\n
  • MSSP module supporting SPI and I2C master\/slave modes<\/li>\n
  • EUSART with LIN and IrDA support<\/li>\n
  • 2 CCP modules with capture, compare, and PWM modes<\/li>\n
  • Internal oscillator: 31 kHz to 4 MHz<\/li>\n
  • ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debug)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Embedded control systems<\/li>\n
    • Instrumentation and measurement<\/li>\n
    • Motor control<\/li>\n
    • Communication interfaces<\/li>\n
    • Consumer electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PIC18F452-I\/P is a high-performance 8-bit PIC18 microcontroller from Microchip Technology with 32KB Flash, 1.5KB RAM, 256B EEPROM, 10-bit ADC, and multiple communication interfaces in a 40-pin PDIP package. Key Specifications Core PIC18 8-bit, up to 40 MHz Flash Memory 32 KB RAM 1536 bytes Data EEPROM 256 bytes I\/O Pins 34 ADC […]<\/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-7819","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-mcu","chip_brand-microchip"],"acf":{"brief_explanation":"8-bit PIC18 MCU, 32KB Flash, 1.5KB RAM, 10-bit ADC, SPI\/I2C, PDIP-40","date_code":"","package_case":"PDIP-40 (600 mil, 15.24 x 51.6 mm)","in_stock":4200,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/39564C.pdf","price":"$4.95 @ 1ku","product_introduction":"The PIC18F452-I\/P is a high-performance 8-bit PIC18 microcontroller from Microchip Technology featuring 32KB Flash, 1536 bytes RAM, and 256 bytes EEPROM in a 40-pin PDIP package. The device operates at up to 40 MHz with an 8x8 single-cycle hardware multiplier for accelerated math operations. Peripherals include a 10-bit ADC with 8 channels, two CCP modules (capture, compare, PWM), an MSSP module supporting both SPI and I2C master\/slave, and an EUSART with LIN and IrDA capabilities. The internal oscillator provides 31 kHz to 4 MHz clock options. ICSP and ICD support enable in-circuit programming and debugging. The PDIP-40 package is ideal for prototyping and educational use.","working_principle":"The PIC18F452 uses Microchip's enhanced PIC18 core with a 16-bit instruction word and linear program memory addressing. The core fetches instructions from Flash via the program bus and accesses data RAM and SFRs via the data bus in a modified Harvard architecture. The 8x8 hardware multiplier completes an unsigned multiply in a single instruction cycle, enabling fast PID loop calculations and DSP functions. The 10-bit SAR ADC samples the selected channel, performs the conversion in 12 TAD cycles, and stores the result in ADRESH:ADRESL registers. The MSSP module implements SPI by shifting data through an 8-bit shift register with configurable clock polarity and phase, or I2C by generating START\/STOP conditions and byte-level transfers with hardware ACK\/NACK handling. The EUSART transmitter shifts data out with programmable baud rate derived from the system clock, while the receiver samples incoming bits at the baud rate and detects framing errors and overrun conditions. The CCP modules can capture timer values on external events, compare timer values to trigger outputs, or generate PWM waveforms with 10-bit resolution.","pin_description":"\n
      Pin Group<\/th>Function<\/th>Description<\/th><\/tr>\n
      RA0-RA5<\/td>GPIO\/ADC\/Ref<\/td>Port A with ADC, VREF+, and oscillator functions<\/td><\/tr>\n
      RB0-RB7<\/td>GPIO\/Int\/ICSP<\/td>Port B with external interrupts, ICSP data\/clock<\/td><\/tr>\n
      RC0-RC7<\/td>GPIO\/Timers\/Comm<\/td>Port C with CCP, EUSART, MSSP (SPI\/I2C) functions<\/td><\/tr>\n
      RD0-RD7<\/td>GPIO\/Parallel<\/td>Port D with parallel slave port function<\/td><\/tr>\n
      RE0-RE2<\/td>GPIO\/ADC\/PSP<\/td>Port E with ADC, VREF, and parallel slave port control<\/td><\/tr>\n
      MCLR<\/td>System<\/td>Master clear (reset) input with internal pull-up<\/td><\/tr>\n
      VDD\/VSS<\/td>Power<\/td>Multiple supply and ground pins<\/td><\/tr>\n
      OSC1\/OSC2<\/td>System<\/td>Crystal oscillator connections<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Embedded Control:<\/strong> 32KB Flash and 34 I\/O pins provide sufficient resources for multi-function control systems with display, keypad, and communication<\/li>\n
      • Instrumentation:<\/strong> 10-bit ADC and hardware multiplier enable data acquisition and signal processing in measurement instruments<\/li>\n
      • Motor Control:<\/strong> 2 CCP modules with PWM capability drive DC and stepper motors through bridge drivers<\/li>\n
      • Communication Bridges:<\/strong> EUSART and MSSP (SPI\/I2C) enable protocol conversion between serial interfaces<\/li>\n
      • Education:<\/strong> PDIP-40 package fits breadboards; ICSP and ICD support make it ideal for university labs and training<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>\n
        PIC18F4520-I\/P<\/td>Microchip<\/td>Newer, nanoWatt, 32KB Flash, lower power<\/td><\/tr>\n
        PIC18F4550-I\/P<\/td>Microchip<\/td>With USB 2.0, 32KB Flash, PDIP-40<\/td><\/tr>\n
        PIC18F46K22-I\/P<\/td>Microchip<\/td>64KB Flash, nanoWatt XLP, 12-bit ADC<\/td><\/tr>\n
        ATMEGA328P-PU<\/td>Microchip<\/td>32KB Flash, 2KB RAM, PDIP-28, AVR<\/td><\/tr>\n
        PIC16F877A-I\/P<\/td>Microchip<\/td>14-bit mid-range, 14KB Flash, PDIP-40<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7819","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=7819"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7819\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7819"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}