{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS80C323-MCD+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS80C323-MCD","canonicalUrl":"https://icboms.com/analog-devices/DS80C323-MCD","factsUrl":"https://icboms.com/api/mcp/products/DS80C323-MCD%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated DS80C323-MCD+, 8-bit 8051 MCU, 18MHz, ROMless, 256 x 8 RAM, 2.7V-5.5V, 0°C-70°C, 40-PDIP.","salesMarkdown":"## What this 8051 MCU is and where it fits The Maxim Integrated DS80C323-MCD+ is an 8-bit microcontroller built around the 8051 core, running at 18 MHz. It is a ROMless device — all program memory must be supplied externally via the external bus interface (EBI/EMI). On-chip RAM is 256 x 8 bytes. The part integrates a power-fail reset and a watchdog timer (WDT) for basic system supervision. Connectivity includes SIO and UART/USART serial interfaces, plus 32 general-purpose I/O lines. It operates from 2.7 V to 5.5 V over the commercial temperature range of 0°C to 70°C, and is housed in a 40-pin PDIP (0.600\" body) for through-hole assembly. ## Lifecycle and sourcing posture The DS80C323-MCD+ carries an Active lifecycle status per the manufacturer. It is ROHS3 compliant.","metaTitle":"DS80C323-MCD+ 8051 MCU, 18MHz, ROMless, 40-PDIP","metaDescription":"Maxim Integrated DS80C323-MCD+ 8-bit 8051 MCU, 18MHz core, ROMless, 256x8 RAM, 2.7-5.5V, 0-70°C, 40-PDIP. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":"80C","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"18MHz","Series":"80C","Package":"Tube","RAM Size":"256 x 8","Core Size":"8-Bit","Peripherals":"Power-Fail Reset, WDT","Connectivity":"EBI/EMI, SIO, UART/USART","Mounting Type":"Through Hole","Number of I/O":"32","Core Processor":"8051","Package / Case":"40-DIP (0.600\\\", 15.24mm)","Oscillator Type":"External","lifecycle_stage":"eol_hot","Program Memory Type":"ROMless","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"40-PDIP","Voltage - Supply (Vcc/Vdd)":"2.7V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.36","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.36000","currency":"USD"},{"qty":10,"price":"$10.25800","currency":"USD"},{"qty":25,"price":"$9.78120","currency":"USD"},{"qty":100,"price":"$8.49310","currency":"USD"},{"qty":250,"price":"$8.11136","currency":"USD"},{"qty":500,"price":"$7.39564","currency":"USD"},{"qty":1000,"price":"$6.44136","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/DS80C320-DS80C323.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does DS80C323-MCD+ have internal ROM?","answer":"No, this is a ROMless device. All program memory must be provided externally."},{"question":"What is the closest pin-compatible alternative to DS80C323-MCD+?","answer":"Within the same 80C family, the DS80C320 series includes internal ROM variants and shares the same 40-pin PDIP footprint. Verify the specific memory type and speed grade against your firmware requirements before substituting."},{"question":"Where can I buy DS80C323-MCD+?","answer":"We source this part to order. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS80C323-MCD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS80C323-MCD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}