ATMEGA8535L-8JU - AVR 8-bit MCU 8KB Flash 8MHz 44-PLCC | Microchip
Teilenummer: ATMEGA8535L-8JU ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.21 | $2,21 |
| 10 | $2.1 | $21,00 |
| 100 | $1.98 | $198,00 |
| 500 | $1.85 | $925,00 |
| 1.000 | $1.72 | $1.720,00 |
ATMEGA8535L-8JU Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die. The ATmega8535 belongs to the AVR ATmega family, which sits within the broader microcontroller hierarchy: MCU -> embedded processor -> integrated circuit -> semiconductor. AVR's Harvard architecture with 130 mostly single-cycle instructions delivers up to 16 MIPS at 16 MHz, giving roughly 1 MIPS per MHz efficiency.
Key features include 8KB (4K x 16) self-programmable Flash, 512 bytes of in-system EEPROM, an 8-channel 10-bit successive-approximation ADC, 32 programmable I/O lines, two 8-bit and one 16-bit timers with PWM, a programmable serial USART, and an on-chip analog comparator. The 'L' speed grade and GREEN designation support low-power, lead-free designs.
Technically, the AVR enhanced RISC core executes most instructions in one clock cycle through a two-stage pipeline, while 32 general-purpose registers are directly connected to the ALU. Six sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) let designers cut quiescent draw in battery-powered systems.
Typical applications include industrial control panels, ADC-based sensor acquisition nodes, motor and lighting control boards, and legacy PLCC-footprint AVR designs needing a second source. The 44-PLCC package suits socketed production and prototype environments.
Design consideration: the 'L' grade limits clocking to 8 MHz; above that, choose ATMEGA8535-16Jx variants. Ensure 4.5-5.5V supply since this is not the 2.7V-capable low-voltage option across all conditions.
This page synthesizes distributor pricing, drop-in alternatives, pin guidance, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in-Alternativen für ATMEGA8535L-8JU – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATMEGA8535L-8JU (gleiche Bauform und Footprint) – abweichend in Throughput, Timers, Package, SRAM, Communication Interfaces.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATMEGA8535L-8AJ
✅ Drop-In✓ Auf Lager
$2.7 / Stück
Datenblatt ansehen →ATMEGA8535L-8JC
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATMEGA8535-16JI
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATMEGA8535-16JC
✅ Drop-In✓ Auf Lager
$3.25 / Stück
Datenblatt ansehen →ATMEGA8515-16JI
✅ Drop-In✓ Auf Lager
$5.44 / Stück
Datenblatt ansehen →ATMEGA8535L-8JU Grenzwerte & elektrische Eigenschaften
| Core Architecture | AVR enhanced RISC, 8-bit |
| Flash Program Memory | 8 KB (4K x 16) |
| SRAM | 512 B |
| EEPROM | 512 B |
| Maximum Clock Speed | 8 MHz (L speed grade) |
| Throughput | 16 MIPS at 16 MHz (device family max) |
| Versorgungsspannung | 4.5 V to 5.5 V |
| ADC | 8-channel, 10-bit |
| Programmable I/O Lines | 32 |
| Timers | Two 8-bit, one 16-bit with PWM |
| Serial Interfaces | USART, SPI |
| Instructions | 130 powerful instructions, mostly single-cycle |
| Sleep Modes | 6 (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) |
| Gehäuse | 44-PLCC (J-lead), 16.6 x 16.6 mm |
| Temperature Range | Industrial |
| Montageart | Surface Mount |
| Environmental | GREEN (lead-free per Mouser listing) |
| RoHS-Status | Compliant (GREEN designation) |
| Lebenszyklusstatus | Active |
ATMEGA8535L-8JU 44-plcc (j-lead), 16.6 x 16.6 mm Pinbelegungsleitfaden
Pinbelegung für ATMEGA8535L-8JU (44-plcc (j-lead), 16.6 x 16.6 mm-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für ATMEGA8535L-8JU.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ATMEGA8535L-8JU ist geeignet für 6 Anwendungs: Industrial Control Panels, Analog Sensor Acquisition Nodes, Motor and Lighting Control, Legacy PLCC AVR System Maintenance, Battery-Powered Instrumentation, Educational and Embedded Training Platforms.
Industrial Control Panels
The ATMEGA8535L-8JU fits industrial control panels that need deterministic 8-bit control, 32 programmable I/O lines, and robust 5V noise immunity. Its industrial temperature rating and AVR RISC core with 130 mostly single-cycle instructions provide predictable timing for relay sequencing, keypad scanning, and status indication. The on-chip 8-channel 10-bit ADC reads analog setpoints (potentiometers, 4-20mA-conditioned signals via external conditioning) without an external converter, while the USART links to HMIs or SCADA gateways. Running at 8 MHz at 5V gives high CMOS noise margins in electrically harsh cabinets, and Power-down sleep keeps standby current low between control cycles.
Empfohlen
Analog Sensor Acquisition Nodes
With an 8-channel 10-bit successive-approximation ADC, the ATMEGA8535L-8JU directly digitizes up to eight analog sensors - temperature, humidity, pressure bridges, or voltage dividers - at roughly 4.9 mV/LSB resolution on a 5V reference. The dedicated ADC Noise Reduction sleep mode stops the CPU clock during conversions, cutting digital noise and improving effective ADC accuracy, a distinct benefit over MCUs without this mode. The 512B EEPROM stores calibration constants across power cycles, and the USART streams results to logging hardware. The 44-PLCC socket-compatible package simplifies field calibration swaps in prototype or low-volume instrumentation.
Empfohlen
Motor and Lighting Control
The ATMEGA8535L-8JU provides two 8-bit timers and one 16-bit timer with PWM outputs, enabling multi-channel PWM generation for DC motor speed control, LED dimming, and small inverter stages. At 8 MHz, an 8-bit PWM resolution yields about 31 kHz carrier frequency, above audible range, while the 16-bit timer supports slow, precise servo or heater PWM periods. Four PWM-capable channels from the timer units plus 32 I/O lines cover direction logic, enable signals, and fault inputs. The 5V industrial supply and PLCC package tolerate cabinet temperatures and vibration better than small-pitch QFP alternatives in cost-driven equipment.
Empfohlen
Legacy PLCC AVR System Maintenance
Many installed AT90S8535 and early ATmega8535 designs used socketed 44-PLCC packages, and the ATMEGA8535L-8JU is the natural in-system repair part: per Microchip documentation, the ATmega8535 is the upgrade/compatible successor to the AT90S8535 in the same footprint. Socketed PLCC allows technicians to reprogram or swap Flash devices in the field without hot-air rework, an advantage over soldered TQFP parts. The 8KB Flash accommodates accumulated legacy firmware with ISP (in-system programming) support, and 512B EEPROM preserves configuration. Stock availability (18,000+ pieces at Heisener as of 2026-09-19) supports repair-stock provisioning.
Empfohlen
Battery-Powered Instrumentation
Although this is a 5V industrial part, the ATmega8535 architecture suits battery instruments that can tolerate a 4.5-5.5V rail (e.g., four NiMH cells or a boost converter). Six sleep modes - Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby per Microchip datasheet doc2502 - allow the firmware to cut core current dramatically between measurement bursts. The 16-bit timer with Power-save mode can act as an asynchronous wake source, and the 512B EEPROM logs configuration and calibration without external nonvolatile memory. Designers should trade the 8 MHz limit against duty-cycling: lower clocking plus sleep dominates average current.
Empfohlen
Educational and Embedded Training Platforms
The ATmega8535 remains popular in university embedded-systems labs because the AVR core exposes architecture concepts clearly: 32 registers, single-cycle execution, Harvard memory, and simple ISP flashing. The 44-PLCC socketed package lets students remove and reprogram devices on breadboard-compatible carrier boards without SMT equipment. The rich peripheral set - 8-channel 10-bit ADC, USART, SPI, three timers with PWM, analog comparator - supports progressive coursework from blinking LEDs to closed-loop ADC control within one chip. Availability under $2.50 per unit (LCSC, as of 2026-09-19) keeps per-station costs low for volume lab purchases.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATMEGA8535L-8JU – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATMEGA8535L-8AJ | ATMEGA8535L-8JC | ATMEGA8535-16JI | ATMEGA8515-16JI |
|---|---|---|---|---|---|
| Package | 44-PLCC (J-lead), 16.6x16.6 mm | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same | 44-PLCC (J-lead) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Speed | 8 MHz | 8 MHz | 8 MHz | 16 MHz | 16 MHz |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit | 8-channel, 10-bit | 8-channel, 10-bit | None |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Temperature Range | Industrial (-40C to +85C) | Industrial - same | Commercial (0C to +70C) | Industrial - same | Industrial - same |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B |
Wichtigste Unterscheidungsmerkmale
- Lowest-cost L speed grade with ADC (vs. ATMEGA8535-16JI)
- Industrial temperature rating (vs. ATMEGA8535L-8JC)
- Integrated 8-channel 10-bit ADC (vs. ATMEGA8515-16JI)
Designhinweise
Decouple both VCC pins and AVCC with 100 nF ceramic capacitors placed within 5 mm of the package pins, plus a 4.7-10 uF bulk capacitor near the PLCC supply entry. AVCC must be connected to VCC even if the ADC is unused, per Microchip datasheet doc2502; for ADC use, feed AVCC through an LC filter (10 uH + 100 nF) to isolate converter noise from digital supply ripple. Keep the 5V rail within 4.5-5.5 V; brown-out detector fuse settings protect EEPROM writes during supply sag.
The 44-PLCC J-lead package is socket-compatible but its leads add roughly 1-2 nH of parasitic inductance versus a QFN; keep crystal traces short (XTAL1/XTAL2 close to the package with 20 pF loading capacitors per datasheet clock section) and route the ADC reference (AREF) away from switching nets. If using a PLCC socket, verify contact resistance over temperature - oxidized contacts are a classic field-failure mode in industrial environments. Provide via-stitched ground pour under the package.
Do not clock the '-8JU' above 8 MHz: the 'L' speed grade is limited to 0-8 MHz per datasheet doc2502, and overclocking causes marginal instruction timing not covered by specification. Also, PLCC pin numbering winds counterclockwise around the package with pin 1 at the top-center-indexed corner - transferring a QFP-44 pin map to a PLCC footprint is a frequent layout error. Finally, remember this part is not the low-voltage grade across all ordering options: design for a true 5V rail, not 3.3V.
Compliance-Informationen
DigiKey and Mouser list the part as RoHS compliant with Microchip's GREEN designation (lead-free); Mouser listing states 'IND TEMP GREEN'. REACH, halogen-free, and conflict-minerals statuses not stated in provided data.
