ATMEGA8HVA-4CKUR - 8-bit AVR MCU 8KB Flash 36-LGA | Microchip
N.º de pieza: ATMEGA8HVA-4CKUR ✗ Fin de vida| Cant. | Precio unitario | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
ATMEGA8HVA-4CKUR Descripción general
An 8-bit microcontroller (MCU) is an integrated circuit that combines a processor core, program memory, data memory, and peripherals on a single chip, forming the lowest tier of the embedded-system hierarchy (MCU -> embedded processor -> semiconductor). The AVR architecture uses a Harvard-structure, single-cycle RISC core, executing most instructions in one clock cycle, which gives high code efficiency for battery-powered and cost-sensitive control tasks.
Key features of the ATMEGA8HVA-4CKUR include the AVR 8-bit RISC core at up to 4 MHz, 8KB self-programmable Flash, 512B of EEPROM for calibration data retention, 1KB of internal SRAM, and SPI plus LIN-relevant serial connectivity. The HVA variant integrates features aimed at automotive high-voltage environments, distinguishing it from generic ATmega8 commercial parts.
Architecturally, the device belongs to the ATmega series with single-cycle I/O access, interrupt-driven peripheral operation, and in-system programmable Flash that permits firmware update after board assembly. Peripherals typical of the family include timers, 10-bit ADC stages, and serial interfaces; exact peripheral counts should be confirmed against the manufacturer datasheet.
Typical applications include automotive LIN-bus nodes, battery-management and sensor-supervision modules, body-electronics control points, and industrial monitoring nodes where low supply-voltage flexibility (2.5V/3.3V/5V) and small LGA footprint matter.
A key design consideration: this part is classified as obsolete, so new designs should not start on it; existing designs should plan migration to an active AVR part and verify footprint compatibility before layout reuse.
This page synthesizes distributor listings, cross-reference comparisons, and lifecycle data not found in the manufacturer datasheet.
Alternativas directas para ATMEGA8HVA-4CKUR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATMEGA8HVA-4CKUR (mismo factor de forma y huella) — difiere en Series, Connectivity, EEPROM Size, Package, Program Memory Size.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATMEGA16HVA-4CKUR
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →ATMEGA8HVA-4CKU
✅ Sustitución directa✓ En stock
$2.05 / unidad
Ver hoja de datos →ATMEGA8HVA-4CKUR Valores máximos y características eléctricas
| Core Processor | AVR |
| Core Size | 8-Bit |
| Max Clock Speed | 4 MHz |
| Flash Memory | 8 KB |
| EEPROM | 512 B |
| SRAM | 1 KB |
| Tensión de alimentación | 2.5 V / 3.3 V / 5 V |
| Connectivity | SPI, LIN |
| Encapsulado | 36-LGA |
| Tipo de montaje | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Product Status | Obsolete (EOL) |
| Series | AVR ATmega (HVA automotive) |
| Programming | In-System Programmable (ISP) Flash |
Guía de configuración de pines de ATMEGA8HVA-4CKUR 36-lga
Configuración de pines para ATMEGA8HVA-4CKUR (encapsulado 36-lga). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para ATMEGA8HVA-4CKUR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATMEGA8HVA-4CKUR es adecuado para 6 aplicacións: Automotive LIN Bus Nodes, Battery Management and Power Supervision, Body Electronics Control Modules, Sensor Acquisition and Monitoring Nodes, Industrial Control and Actuator Drivers, Legacy Board Repair and Sustaining Production.
Automotive LIN Bus Nodes
The ATMEGA8HVA-4CKUR fits LIN-bus slave node designs because the ATmega HVA family was developed for automotive subnetworks where a low-cost UART-based LIN interface handles window lifters, seat controls, mirrors, and wiper modules. The 2.5V/3.3V/5V supply range lets it sit on board-net rails with simple regulation, and the 4 MHz clock is sufficient for the 19.2 kbps LIN 2.0 data rate with generous CPU headroom. In a typical node the MCU reads switch or sensor states through the ADC, executes protocol handling in the 8KB Flash, and drives the LIN transceiver via SPI/UART pins. Because the part is obsolete, new LIN nodes should instead use active AVR parts, but existing modules can be repaired using ATMEGA16HVA-4CKUR drop-ins.
Recomendado
Battery Management and Power Supervision
HVA (High-Voltage AVR) devices target battery-connected supervision circuits in vehicles, where the MCU monitors cell or rail voltage and reports status over LIN or SPI. The ATMEGA8HVA-4CKUR's flexible 2.5V-5V operation supports direct battery-rail derivatives with regulation, while 512B of EEPROM retains calibration and fault-history data across power cycles - essential for battery-log functions. The 1KB SRAM accommodates measurement buffering and averaging algorithms, and the single-cycle AVR core executes them efficiently at 4 MHz. In a typical implementation the device samples voltages through the internal ADC, compares against EEPROM-stored thresholds, and wakes or faults-out loads. Designers should verify the exact integrated high-voltage feature set in the datasheet, as family members differ in regulator and protection provisions.
Recomendado
Body Electronics Control Modules
Body-control subfunctions such as lighting drivers, door modules, and relay control benefit from the ATMEGA8HVA-4CKUR's combination of small 36-LGA footprint, low supply flexibility, and robust AVR interrupt architecture. The 8KB ISP Flash is large enough for the state machines and LIN communication stacks these modules require, while in-system programmability permits firmware updates at end-of-line or during service. The AVR core's deterministic single-cycle execution simplifies timing analysis for PWM light-dimming and relay sequencing tasks. Since the HVA family carries automotive-grade heritage, the part was commonly specified in tier-one body modules. With the part now obsolete, boards in this domain should be migrated: the ATMEGA16HVA-4CKUR preserves the footprint, while ATMEGA1608-class devices provide an active long-term path with a redesign.
Recomendado
Sensor Acquisition and Monitoring Nodes
Distributed sensor nodes - temperature, pressure, and position sensing in vehicles and industrial equipment - suit the ATMEGA8HVA-4CKUR's ADC-based inputs and SPI connectivity to external converters. The 4 MHz clock is adequate for periodic sampling, digital filtering, and threshold reporting at LIN or UART data rates, while the 1KB SRAM buffers windowed samples for averaging. The 512B EEPROM stores per-unit calibration coefficients written during production, enabling node interchange without recompiling firmware. Operating from 2.5V allows direct connection to low-voltage sensor bridges, reducing level-shifting components. Engineers maintaining these nodes should confirm the ADC channel count and reference options in the HVA family datasheet, and consider the ATMEGA16HVA-4CKUR when firmware growth exceeds the 8KB Flash budget.
Recomendado
Industrial Control and Actuator Drivers
Small actuator controllers - valve drivers, fan speed controllers, and motor-assist circuits - leverage the ATMEGA8HVA-4CKUR's timer outputs for PWM generation and its robust AVR interrupt system for fault handling. Running at 5V provides noise margin in industrial cabinets, and the 36-LGA package keeps board area small in dense control cards. The 8KB Flash accommodates control loops, communication, and diagnostics simultaneously; typical code sizes for such applications fall well within budget. In-system programming supports field firmware updates through the SPI header without desoldering. Designers should add watchdog supervision and brown-out configuration because industrial supply dips are common; the HVA family includes brown-out detection that should be enabled in fuses. For long-term sourcing, plan migration to active ATmega parts.
Recomendado
Legacy Board Repair and Sustaining Production
The most practical current use of the ATMEGA8HVA-4CKUR is sustaining production or repair of legacy automotive and industrial boards designed between 2008 and the part's discontinuation. In this scenario, the ATMEGA16HVA-4CKUR serves as the first-line drop-in because it shares the 36-LGA footprint and upward-compatible 16KB Flash, and the ATMEGA8HVA-4CKU covers tray-based rework flows. Repair workflows should reprogram Flash and EEPROM (calibration data) after replacement, verify fuse settings including brown-out and clock configuration, and validate LIN timing against the module specification. Because broker-supplied obsolete parts carry counterfeit risk, purchase only from distributors providing date-code and provenance documentation, and consider a last-time-buy buffer of the 16KB variant.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATMEGA8HVA-4CKUR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATMEGA16HVA-4CKUR | ATMEGA8HVA-4CKU | ATMEGA8A-MN | ATMEGA1608-AUR |
|---|---|---|---|---|---|
| Package | 36-LGA | 36-LGA - same | 36-LGA - same | VQFN/MLF - different | TQFP - different |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB | 16 KB | 8 KB | 8 KB | 16 KB |
| Max Clock Speed | 4 MHz | 4 MHz class | 4 MHz | 16 MHz | 20 MHz |
| Supply Voltage | 2.5 V / 3.3 V / 5 V | HVA family supply range | 2.5 V / 3.3 V / 5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V |
| Lifecycle Status | Obsolete | Aging HVA family - verify | Obsolete | Active | Active |
| Drop-in Compatible | - | Yes (pin-to-pin) | Yes (pin-to-pin) | No (PCB redesign) | No (PCB redesign) |
| Connectivity | SPI, LIN | SPI, LIN | SPI, LIN | SPI, I2C, UART/USART | SPI, I2C, USART |
Diferenciadores clave
- Automotive HVA heritage in a compact 36-LGA (frente a ATMEGA8A-MN)
- Only half the Flash of its pin-compatible sibling (frente a ATMEGA16HVA-4CKUR)
- Flexible 2.5V/3.3V/5V supply range (frente a ATMEGA1608-AUR)
Notas de diseño
The ATMEGA8HVA-4CKUR is officially obsolete, so procurement risk is the primary design hazard. Authorized-distributor stock is largely depleted and remaining supply flows through broker channels with elevated counterfeit risk. For any new PCB, treat this part as unavailable; for legacy boards, qualify the ATMEGA16HVA-4CKUR (same 36-LGA footprint, 16KB Flash) and place a last-time-buy. Always request date codes, certificates of conformance, and provenance documentation when sourcing from Ampheo, integrated-circuit.com, or Lisleapex.
The device supports 2.5V, 3.3V, and 5V operation, which gives flexibility on mixed-rail boards but also creates brown-out margin concerns: at 2.5V operation the margin to the minimum operating voltage is small, so enable the AVR brown-out detector via fuses and set the threshold appropriate to the chosen rail. When replacing an ATMEGA8HVA-4CKUR with the ATMEGA16HVA-4CKUR, power consumption is nearly identical, but verify EEPROM contents and fuse bits are reprogrammed after the swap since fuses do not transfer with the physical part.
The 36-LGA package uses lands rather than protruding leads, so solder-joint inspection is limited to X-ray or electrical test. When reworking an existing board, use a profile matched to the original land pattern and avoid excessive temperature that could damage neighboring passives. LGA devices are sensitive to PCB warpage - ensure the land pattern follows the manufacturer datasheet land recommendations, and confirm clock-source and decoupling component placement match the reference layout in the HVA family datasheet to preserve LIN timing integrity.
Información de cumplimiento
Compliance status not stated in retrieved distributor data. Confirm on the Microchip product page or request certificate of conformance from the supplying distributor. The HVA family is automotive-oriented, but formal AEC-Q100 qualification status was not found in the retrieved data.
