ATMEGA48A-CCUR - 8-Bit AVR MCU 20MHz 4KB Flash 32-UFBGA | Microchip
Référence : ATMEGA48A-CCUR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.62 | $1,62 |
| 10 | $1.46 | $14,60 |
| 100 | $1.3 | $130,00 |
| 500 | $1.15 | $575,00 |
| 1 000 | $1.02 | $1 020,00 |
ATMEGA48A-CCUR Présentation
A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals such as timers, UART, SPI, I2C, and ADC onto one die. Microcontrollers sit at the device level of the embedded-systems hierarchy: microcontroller -> 8-bit MCU -> embedded processor -> semiconductor IC. They execute control, sensing, and communication tasks in virtually every electronic product.
The ATMEGA48A executes 131 powerful instructions, most in a single clock cycle, through its Advanced RISC architecture with 32 general-purpose working registers. Key features include 4KB self-programmable Flash, a 6-channel 10-bit ADC, three flexible timer/counters with compare modes, and an internal calibrated RC oscillator, all in an industrial temperature rating (I suffix).
The A-version die is manufactured on Microchip's optimized AVR process, delivering lower power consumption and improved electrical characteristics versus the original ATmega48 while remaining functionally identical (per Microchip application note AVR532, the ATmega48A is a drop-in replacement for the ATmega48). The 32-UFBGA package offers the smallest possible footprint for space-constrained designs.
Typical applications include compact battery-powered sensor nodes, consumer appliances, industrial control boards, and handheld instruments where board area is at a premium and the ball-grid package enables high-density assembly.
Design consideration: use the BGA package only where reflow assembly and X-ray inspection capability exist; the device cannot be hand-soldered or reworked like a TQFP.
This page synthesizes distributor pricing, verified drop-in alternatives, design guidance, and FAQ content not found in the manufacturer datasheet.
Alternatives de remplacement direct pour ATMEGA48A-CCUR — 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 ATMEGA48A-CCUR (même facteur de forme et même empreinte) — différant par Package, Supply Voltage Range, EEPROM, Flash Memory, SRAM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA48A-CCU
✅ Remplacement direct✓ En stock
$1.12 / unité
Voir la fiche technique →ATMEGA48PA-CCUR
✅ Remplacement direct✓ En stock
$1.3 / unité
Voir la fiche technique →ATMEGA88A-CCUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →ATMEGA168A-CCUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$1.92 / unité
Voir la fiche technique →ATMEGA88PA-CCUR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$1.08 / unité
Voir la fiche technique →ATMEGA48A-CCUR Valeurs maximales et caractéristiques électriques
| Core Processor | AVR 8-bit RISC |
| Core Size | 8-Bit |
| Speed | 20 MHz |
| Flash Memory | 4KB (2K x 16) |
| EEPROM | 256B |
| SRAM | 512B |
| Number of I/O | 23 |
| Supply Voltage Range | 2.5V / 3.3V / 5V (4.5V to 5.5V at 20 MHz) |
| Instructions | 131, most single-cycle |
| General Purpose Working Registers | 32 |
| Timer/Counters | 3 flexible timer/counters with compare modes |
| Package Type | 32-UFBGA, 4 x 4 mm, 1 mm height, 0.45 mm pitch |
| Type de montage | Surface Mount (BGA) |
| Température de fonctionnement | -40C to +85C (industrial, I suffix) |
| Packaging | Tape & Reel (R suffix) |
| Statut du cycle de vie | ACTIVE |
| Statut RoHS | GREEN package (per digchip) |
Guide de configuration des broches du ATMEGA48A-CCUR 32-ufbga, 4 x 4 mm, 1 mm height, 0.45 mm pitch
Configuration des broches du ATMEGA48A-CCUR (boîtier 32-ufbga, 4 x 4 mm, 1 mm height, 0.45 mm pitch). 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 ATMEGA48A-CCUR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATMEGA48A-CCUR convient pour 6 applications: Battery-Powered Sensor Nodes, Industrial Control and Actuator Boards, Consumer Appliances, Handheld and Portable Instruments, IoT Edge Nodes and RF Modules, Medical and Wellness Monitoring Accessories.
Battery-Powered Sensor Nodes
The ATMEGA48A-CCUR suits compact battery-powered sensor nodes because it combines a 4KB Flash program space with AVR low-power sleep modes and an internal calibrated RC oscillator, eliminating the crystal's quiescent power in non-critical timing designs. Running from a 3.3V coin cell or two AA cells, the device spends most of its life in power-down sleep and wakes on pin-change or timer interrupts to sample sensors via its 10-bit ADC. The 4 x 4 mm UFBGA footprint lets the MCU share a PCB with the RF module and battery clip in nodes under 1 cm square. Trade-off: wake-up and ADC overhead per sample should be budgeted in the energy model.
Recommandé
Industrial Control and Actuator Boards
In industrial control, the ATMEGA48A-CCUR drives relays, valves, and small motors from its 23 general-purpose I/O lines while monitoring feedback through the 6-channel 10-bit ADC and the three timer/counters with compare modes for PWM generation. The industrial -40C to +85C temperature rating (I suffix) matches factory-floor ambient ranges, and the AVR watchdog timer plus brown-out detection provide the fault recovery required in unattended equipment. Operating at 5V gives 20 MHz full-speed execution and noise-robust logic levels on long wiring runs. The UFBGA package demands reflow assembly and X-ray inspection, which most industrial SMT lines already support.
Recommandé
Consumer Appliances
Consumer appliance control boards - coffee makers, fans, small heaters, and chargers - fit comfortably within the ATMEGA48A-CCUR's 4KB Flash and 256B EEPROM, which stores user settings and calibration across power cycles. The internal 8 MHz RC oscillator removes the crystal BOM line, and the device's GREEN RoHS-compliant package satisfies consumer environmental regulations. At 5V and 20 MHz, button debouncing, LED multiplexing, and temperature control loops run with large timing margins. The 32-ball BGA minimizes PCB layers and size, cutting Appliance board cost. Volume pricing near USD 1.00-1.30 at 1000 pieces keeps the total control electronics budget small.
Recommandé
Handheld and Portable Instruments
Portable instruments such as meters, testers, and diagnostic tools benefit from the ATMEGA48A-CCUR's combination of small footprint and low supply voltage operation down to the 2.5V class, extending battery runtime in 3.3V designs. The 10-bit ADC reads sensor bridges and divider networks directly, while SPI and I2C interfaces connect displays, EEPROM, and front-end ICs. The 4 x 4 mm BGA lets the MCU tuck under the display module on a dense two-layer PCB. Design consideration: the BGA cannot be reworked in the field, so prototype on the TQFP variant (ATMEGA48A-AU) and transition to the CCUR for production units.
Recommandé
IoT Edge Nodes and RF Modules
As a companion controller beside an RF module (sub-GHz, Bluetooth, or proprietary 2.4 GHz radios), the ATMEGA48A-CCUR handles sensor polling, packet framing, and power management so the radio can sleep aggressively. Its 512B SRAM accommodates typical 802.15.4-class frame buffers, and the UART plus SPI interfaces link directly to common transceiver ICs. The small UFBGA footprint stacks well under or beside the RF module on compact PCBs, and power-down sleep current keeps the node's standby budget within milliamp-hour targets. Firmware fits comfortably: protocol stacks of this class typically consume 2-3KB of the available 4KB Flash.
Recommandé
Medical and Wellness Monitoring Accessories
Low-power wellness accessories - thermometers, pulse monitors, and activity pucks - use the ATMEGA48A-CCUR where 4KB Flash covers measurement sequencing, filtering, and simple user interface logic. The 10-bit ADC digitizes sensor front ends, the EEPROM retains calibration constants, and sleep modes keep average current in the microamp range between measurement events. The RoHS GREEN package and industrial temperature rating align with medical accessory manufacturing requirements, and the 4 x 4 mm BGA suits wearable-form-factor PCBs. Design note: for designs that will later add USB or richer interfaces, the pin-compatible ATMEGA88A-CCUR or ATMEGA168A-CCUR provides a no-PCB-change memory upgrade path.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA48A-CCUR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA48A-CCU | ATMEGA48PA-CCUR | ATMEGA88A-CCUR | ATMEGA168A-CCUR |
|---|---|---|---|---|---|
| Package | 32-UFBGA (4x4 mm, 0.45 mm pitch) | 32-UFBGA (4x4 mm) - same, tray | 32-UFBGA (4x4 mm) - same | 32-UFBGA (4x4 mm) - same | 32-UFBGA (4x4 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 4KB | 4KB | 4KB | 8KB | 16KB |
| SRAM | 512B | 512B | 512B | 1KB | 1KB |
| EEPROM | 256B | 256B | 256B | 512B | 512B |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Power Optimization | Standard A-version | Standard A-version | picoPower | Standard A-version | Standard A-version |
| Packaging Format | Tape & Reel (R suffix) | Tray | Tape & Reel | Tape & Reel | Tape & Reel |
Principaux différenciateurs
- Smallest-footprint ATmega48A option (vs ATMEGA48A-AU)
- Cost versus picoPower variant (vs ATMEGA48PA-CCUR)
- Same-footprint memory upgrade path (vs ATMEGA168A-CCUR)
Notes de conception
The 32-UFBGA requires Microchip's recommended BGA land pattern with solder-mask-defined or non-solder-mask-defined pads at 0.45 mm pitch. Plan via-in-pad or dog-bone fanout carefully on the two outer ball rows; the inner rows on a 32-ball package usually escape through the center. Solder joint inspection requires X-ray because balls are concealed beneath the package. Do not plan hand rework - use the TQFP ATMEGA48A-AU on prototype boards and switch to the CCUR for production, or validate your assembly house's BGA capability first.
Decouple VCC and AVCC with 100 nF ceramic capacitors placed as close as possible to the respective supply balls, plus a bulk 4.7-10 uF capacitor per rail. If the ADC is used, connect AVCC to VCC through a low-pass LC network and tie AREF to a clean reference with its own 100 nF capacitor. Remember the speed-versus-voltage curve: 20 MHz is only valid near 4.5-5.5V; derate maximum frequency when operating at 3.3V or 2.5V to avoid marginal timing.
Reserve the RESET ball for ISP programming access; routing it as a general I/O locks out in-system reprogramming and forces BGA-level rework, which is effectively impossible. Bring MOSI/MISO/SCK and RESET to test pads or a 2x3 ISP header. Per Microchip application note AVR532, the A-version shares functionality with the original ATmega48 but has a separate datasheet - always verify fuse defaults and electrical characteristics against the ATmega48A document, not the older ATmega48 datasheet, when setting CKDIV8, BOD levels, and boot configuration.
Informations de conformité
Package described as GREEN plastic per digchip listing, indicating RoHS/lead-free compliance. REACH, halogen-free, and conflict-minerals statements not present in provided data.
