{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AVR64DB28-I/SO","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"AVR64DB28-I-SO","canonicalUrl":"https://icboms.com/microchip/AVR64DB28-I-SO","factsUrl":"https://icboms.com/api/mcp/products/AVR64DB28-I%2FSO","rawCanonicalId":null},"summary":{"shortDescription":"Microchip AVR® DB series AVR64DB28-I/SO, 8-bit AVR MCU, 24 MHz, 64 KB Flash, 8 KB SRAM, 512 B EEPROM, 21 I/O, I²C/SPI/UART, 9x12b ADC, 1x10b DAC, 1.8 V to 5.5 V, -40°C to 85°C, 28-SOIC.","salesMarkdown":"## 8-bit AVR with 64 KB Flash and analog peripherals in a 28-SOIC The Microchip AVR64DB28-I/SO is an 8-bit AVR microcontroller from the AVR® DB family, built around a single-cycle I/O core running at 24 MHz. The 28-pin SOIC package keeps the board footprint compact while providing 21 general-purpose I/O lines, plus a 9-channel 12-bit ADC and a single 10-bit DAC for direct sensor and actuator interfacing without external converters. ## Memory and peripheral headroom for control applications The 64 KB Flash (64K x 8) provides ample code space for mid-complexity firmware — think motor control loops, UART protocol stacks, or data-logging routines — while the 8 KB SRAM handles moderate buffering and variable storage. The 512-byte EEPROM is useful for calibration constants or configuration parameters that need to survive a power cycle. On-chip oscillators eliminate the external crystal for most timing tasks, saving two I/O pins and board area. The peripheral set includes brown-out detection, power-on reset, PWM, and a watchdog timer — essential for reliable standalone or safety-critical operation. The 28-SOIC (300 mil body) is a standard surface-mount footprint, easily hand-solderable and compatible with common reflow profiles.","metaTitle":"Microchip AVR64DB28-I/SO 8-bit MCU, 24 MHz, 64 KB Flash","metaDescription":"Microchip AVR64DB28-I/SO 8-bit AVR MCU with 24 MHz core, 64 KB Flash, 8 KB SRAM, 512 B EEPROM, 9x12-bit ADC, 1x10-bit DAC. 28-SOIC, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"AVR® DB","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Microchip Technology","Speed":"24MHz","Series":"AVR® DB","Package":"Tube","RAM Size":"8K x 8","Core Size":"8-Bit","EEPROM Size":"512 x 8","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"21","Core Processor":"AVR","Package / Case":"28-SOIC (0.295\\\", 7.50mm Width)","Product Status":"Active","Data Converters":"A/D 9x12b; D/A 1x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"AVR64DB28","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"28-SOIC","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1000","priceTiers":[{"qty":1,"price":"$2.10000","currency":"USD"},{"qty":25,"price":"$1.93200","currency":"USD"},{"qty":100,"price":"$1.77000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/AVR64DB28-I%2FSO/alternatives.json"},"ai":{"faq":[{"question":"How many I/O pins does the AVR64DB28-I/SO have?","answer":"It provides 21 general-purpose I/O lines in the 28-pin SOIC package."},{"question":"Is the AVR64DB28-I/SO RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meeting the latest RoHS directive restrictions."},{"question":"How to program the AVR64DB28-I/SO?","answer":"Programming is done through the AVR's standard in-system programming (ISP) interface — typically a 6-pin header using the SPI pins — or via the UART bootloader. Microchip's MPLAB X IDE or Atmel Studio with a compatible programmer (e.g., PICkit 4, Atmel-ICE) supports this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/AVR64DB28-I-SO","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/AVR64DB28-I-SO when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}