ATMEGA128-16AJ - 16MHz 128KB 8-Bit AVR MCU | Microchip
Référence : ATMEGA128-16AJ ✗ Fin de vie| Qté | Prix unitaire | 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 |
ATMEGA128-16AJ Présentation
A microcontroller is a programmable integrated circuit that executes firmware, reads inputs, controls outputs, and manages embedded-system functions. This ATmega device belongs to the AVR family of 8-bit RISC microcontrollers, combining flash-backed program storage, SRAM, EEPROM, timers, serial communications, and analog conversion. Its architecture is designed for compact control, measurement, communication, and automation products.
Verified product information identifies a 16 MHz AVR core, 128 KB flash memory, 4 KB SRAM, and 4 KB EEPROM. The ATMEGA128-16AJ also provides an 8-channel 10-bit ADC and JTAG interface. Its 64-TQFP package exposes the device's I/O and communication resources while supporting surface-mount PCB assembly.
The AVR core provides an 8-bit processing platform with an instruction set designed for efficient embedded control. Program storage is 128 KB, while the 4 KB SRAM supports working variables and application state. The 4 KB EEPROM provides nonvolatile storage for parameters, calibration data, configuration values, and other information that must survive power removal.
Typical applications include industrial controllers, building automation equipment, data-acquisition modules, motor and relay-control systems, communication equipment, and embedded instruments. The 10-bit ADC is suitable for analog sensor interfaces, while the JTAG interface supports hardware-assisted programming and debugging workflows. The exact peripheral availability and electrical limits should be confirmed against the manufacturer datasheet before design release.
Designers should preserve the required power, decoupling, clock, programming, and JTAG connections, and should account for the 64-pin TQFP footprint and exposed ground requirements. The exact operating-voltage range, pin names, electrical timing values, and package-specific details are not present in the supplied verified data and are marked as needed below rather than inferred.
Alternatives de remplacement direct pour ATMEGA128-16AJ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATMEGA128-16AJ (même facteur de forme et même empreinte) — différant par Package, Debug Interface, Supply Voltage Range, ADC Resolution, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA128-16AU
✅ Remplacement direct✓ En stock
$14.3 / unité
Voir la fiche technique →ATMEGA128-16AC
✅ Remplacement direct✓ En stock
$7.34 / unité
Voir la fiche technique →ATMEGA128A-MU
✅ Remplacement direct✓ En stock
$5.2 / unité
Voir la fiche technique →ATMEGA128-16AJ Valeurs maximales et caractéristiques électriques
| Core | 8-bit AVR RISC |
| Fréquence d'horloge maximale | 16 MHz |
| Program Memory | 128 KB flash |
| SRAM | 4 KB |
| EEPROM | 4 KB |
| ADC Resolution | 10-bit |
| ADC Channels | 8 channels |
| Debug Interface | JTAG |
| Boîtier | 64-pin TQFP, 14 mm x 14 mm |
| Core Processor | AVR |
| Type de montage | Surface mount |
Guide de configuration des broches du ATMEGA128-16AJ 64-pin tqfp, 14 mm x 14 mm
Configuration des broches du ATMEGA128-16AJ (boîtier 64-pin tqfp, 14 mm x 14 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATMEGA128-16AJ.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATMEGA128-16AJ convient pour 6 applications: Industrial Control Boards, Data-Acquisition Modules, Building Automation, Communication Equipment, Motor and Relay Control, Embedded Instrumentation.
Industrial Control Boards
The ATMEGA128-16AJ fits an industrial controller that needs deterministic 8-bit processing, substantial 128 KB of firmware storage, and 4 KB of SRAM for control state. Its 16 MHz AVR core can supervise relays, read sensors, manage interlocks, and update outputs while the 4 KB EEPROM retains configuration values. The verified 10-bit, eight-channel ADC supports analog feedback channels, although exact input limits and acquisition timing must be checked in the datasheet.
Recommandé
Data-Acquisition Modules
For a data-acquisition module, the ATMEGA128-16AJ provides 128 KB flash for sampling, buffering, and communications firmware, plus 4 KB SRAM for working data. The verified eight-channel 10-bit ADC is useful for analog sensor conditioning, while EEPROM can hold calibration constants or device settings. A production design should verify ADC reference voltage, input impedance, conversion timing, and channel multiplexing details in the manufacturer documentation.
Recommandé
Building Automation
The ATMEGA128-16AJ can serve as the central MCU for a building-automation node combining local sensor monitoring, actuator control, and serial communications. Its 16 MHz clock and 128 KB flash provide room for protocol logic and application firmware, while 4 KB SRAM supports state handling and 4 KB EEPROM preserves configuration. The verified JTAG interface also assists commissioning and firmware debugging; exact peripheral pin assignments and timing must be checked before schematic release.
Recommandé
Communication Equipment
A communication peripheral or gateway can use the ATMEGA128-16AJ for protocol processing, buffering, and supervisory control. The device's 128 KB flash supports a larger embedded application than smaller AVR devices, while the 16 MHz core provides a defined performance target for protocol tasks. UART, SPI, and I2C details are not fully specified in the supplied data, so engineers must verify each interface and its pin multiplexing in the manufacturer datasheet.
Recommandé
Motor and Relay Control
The ATMEGA128-16AJ is suitable for a compact relay or motor-control controller when the firmware requires deterministic I/O timing and local nonvolatile parameters. Its 16 MHz AVR core can coordinate interlocks, pulse timing, switch-state monitoring, and fault reporting, while the 128 KB flash accommodates a complete control application. Exact I/O current limits, timer channels, pin states during reset, and external driver requirements must be verified from the datasheet.
Recommandé
Embedded Instrumentation
The ATMEGA128-16AJ can support an embedded instrument that combines local control, analog measurement, EEPROM-backed settings, and field communication. The eight-channel 10-bit ADC allows multiple analog inputs to be managed by firmware, while JTAG provides a debugging path during development. The exact ADC reference, calibration procedure, oscillator options, and communication peripheral mapping are not included in the verified search snippets and must be confirmed before production.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA128-16AJ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA128-16AU | ATMEGA128-16AC | ATMEGA128A-MU |
|---|---|---|---|---|
| Package | 64-pin TQFP, 14 mm x 14 mm | TQFP-64 candidate; exact package verification required | TQFP-64 candidate; exact package verification required | TQFP-64 candidate; exact package verification required |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
Principaux différenciateurs
- Verified ATmega128 configuration (vs ATMEGA128A-MU)
- Documented memory allocation (vs ATMEGA128-16AU)
- Analog and debug resources (vs ATMEGA128-16AC)
Notes de conception
The supplied verified data does not provide the ATMEGA128-16AJ operating-voltage range, so do not select a regulator or digital I/O voltage from memory. Confirm the manufacturer limits first, then size local decoupling according to the datasheet and the switching characteristics of the surrounding circuitry. Keep analog and digital return-current paths controlled so the 10-bit ADC measurements are not corrupted by noisy power or switching nodes.
The device is specified in a 64-pin TQFP package, so the PCB land pattern and pin numbering must be taken from the manufacturer package drawing rather than inferred from the MPN suffix. Preserve access to the programming and JTAG signals, provide unobstructed routing around all perimeter pins, and check thermal-pad requirements if the verified package drawing identifies an exposed pad. A footprint mismatch cannot be corrected by software.
ATMEGA128-16AJ is listed as obsolete in the supplied Octopart comparison result. Before purchasing, request current lifecycle, stock, and traceability information from the supplier. Do not substitute ATMEGA128-16AU, ATMEGA128-16AC, or ATMEGA128A-MU based only on the family name; verify pinout, package, voltage, clock, memory, peripheral compatibility, and boot or fuse behavior against the manufacturer documentation.
For mixed analog and digital functions, route the eight ADC inputs away from high-current switching paths and place any required input filtering close to the relevant pins. Keep the JTAG and programming nets short and accessible for manufacturing test. Because the supplied data does not specify recommended capacitor values, pin multiplexing, or ADC acquisition timing, use the manufacturer layout and application guidance as the controlling references.
Informations de conformité
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred.
