ATMEGA8515-16MU - 8KB AVR MCU 16MHz VQFN-44 | Microchip
Référence : ATMEGA8515-16MU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.29 | $3,29 |
| 10 | $2.96 | $29,60 |
| 100 | $2.63 | $263,00 |
| 500 | $2.36 | $1 180,00 |
| 1 000 | $2.12 | $2 120,00 |
ATMEGA8515-16MU Présentation
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle. Within the power-management hierarchy, it functions as a complete embedded system-on-chip, combining CPU, program memory, data memory, timers, and serial peripherals in one IC. The ATmega8515 belongs to the classic ATmega AVR family, which sits above the smaller ATtiny line and below the high-memory ATmega64/128 devices.
Key features include the Advanced RISC architecture with 130 powerful instructions, an 8 KB self-programmable ISP Flash supporting 10,000 write cycles, and a rich peripheral set: two 8-bit and one 16-bit timers with PWM, an 8-channel 10-bit ADC (in the ADC-equipped variant of the family peripheral map), USART, SPI, TWI (I2C-compatible), and up to 64 KB of external memory addressing.
Technical depth comes from the AVR core: 32 general-purpose 8-bit registers directly connected to the ALU, allowing single-cycle access and efficient C compilation. Internal 8 MHz RC oscillator, brown-out detection, power-on reset, and idle/power-down/power-save sleep modes support low-power operation from a 4.5 V to 5.5 V supply.
Typical applications include industrial control systems, motor control, LCD-equipped instrumentation, telecom peripherals, and legacy AVR designs maintained on 5 V rails where the external-memory expansion capability is required.
Design consideration: because the maximum rating is 5.5 V, 3.3 V-only systems must select the ATmega8515L variants instead; also plan ISP programming headers early in layout.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour ATMEGA8515-16MU — 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 ATMEGA8515-16MU (même facteur de forme et même empreinte) — différant par Package, SRAM, Instruction Set, Core Architecture, Flash Memory.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA8515-16MJ
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.34 / unité
Voir la fiche technique →ATMEGA8515L-8MU
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.54 / unité
Voir la fiche technique →ATMEGA162-16MU
✅ Remplacement direct✓ En stock
$2.19 / unité
Voir la fiche technique →ATMEGA8515-16MU Valeurs maximales et caractéristiques électriques
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 8 KB (4K x 16) ISP |
| SRAM | 512 B (up to 64 KB external) |
| EEPROM | 512 B |
| Fréquence d'horloge maximale | 16 MHz (16 MIPS) |
| Tension d'alimentation | 4.5 V to 5.5 V |
| Boîtier | 44-VQFN (7x7 mm) exposed pad |
| Type de montage | Surface Mount |
| I/O Ports | General purpose I/O (4 x 8-bit ports + port E) |
| Serial Interfaces | USART, SPI, TWI (I2C-compatible) |
| Timers | 2 x 8-bit, 1 x 16-bit with PWM |
| External Memory Interface | Up to 64 KB |
| Instructions | 130 powerful instructions, most single-cycle |
| Registers | 32 x 8-bit general purpose |
| Oscillator | Internal RC oscillator, external crystal support |
| Sleep Modes | Idle, Power-down, Power-save |
| In-System Programming | Yes (ISP Flash) |
| Statut du cycle de vie | ACTIVE |
Configuration des broches de ATMEGA8515-16MU
| Broche 1 | PE0 (RXD) — Port E bit 0 / UART receive data |
| Broche 2 | PE1 (TXD) — Port E bit 1 / UART transmit data |
| Broche 3 | PE2 (XCK/AIN0) — Port E bit 2 / USART clock / analog comparator input 0 |
| Broche 4 | PE3 (AIN1) — Port E bit 3 / analog comparator input 1 |
| Broche 5 | PE4 — Port E bit 4 / general purpose I/O |
| Broche 6 | PE5 — Port E bit 5 / general purpose I/O |
| Broche 7 | PE6 — Port E bit 6 / general purpose I/O |
| Broche 8 | PE7 — Port E bit 7 / general purpose I/O |
| Broche 9 | PB0 (SS) — Port B bit 0 / SPI slave select |
| Broche 10 | PB1 (SCK) — Port B bit 1 / SPI serial clock |
| Broche 11 | PB2 (MOSI) — Port B bit 2 / SPI master data out |
| Broche 12 | PB3 (MISO) — Port B bit 3 / SPI master data in |
| Broche 13 | PB4 (OC0) — Port B bit 4 / Timer0 output compare PWM |
| Broche 14 | PB5 (OC1A) — Port B bit 5 / Timer1 output compare A PWM |
| Broche 15 | PB6 (OC1B) — Port B bit 6 / Timer1 output compare B PWM |
| Broche 16 | PB7 (OC2) — Port B bit 7 / Timer2 output compare PWM |
| Broche 17 | AREF — Analog reference voltage |
| Broche 18 | GND — Digital ground |
| Broche 19 | AVCC — Analog supply voltage |
| Broche 20 | PA0 (AD0) — Port A bit 0 / external memory address/data line |
| Broche 21 | PA1 (AD1) — Port A bit 1 / external memory address/data line |
| Broche 22 | PA2 (AD2) — Port A bit 2 / external memory address/data line |
| Broche 23 | PA3 (AD3) — Port A bit 3 / external memory address/data line |
| Broche 24 | PA4 (AD4) — Port A bit 4 / external memory address/data line |
| Broche 25 | PA5 (AD5) — Port A bit 5 / external memory address/data line |
| Broche 26 | PA6 (AD6) — Port A bit 6 / external memory address/data line |
| Broche 27 | PA7 (AD7) — Port A bit 7 / external memory address/data line |
| Broche 28 | PC7 (A15/T2) — Port C bit 7 / address line 15 / Timer2 input |
| Broche 29 | PC6 (A14/T1) — Port C bit 6 / address line 14 / Timer1 input |
| Broche 30 | PC5 (A13/T0) — Port C bit 5 / address line 13 / Timer0 input |
| Broche 31 | PC4 (A12) — Port C bit 4 / external memory address line 12 |
| Broche 32 | PC3 (A11) — Port C bit 3 / external memory address line 11 |
| Broche 33 | PC2 (A10) — Port C bit 2 / external memory address line 10 |
| Broche 34 | PC1 (A9) — Port C bit 1 / external memory address line 9 |
| Broche 35 | PC0 (A8) — Port C bit 0 / external memory address line 8 |
| Broche 36 | PD0 (INT0) — Port D bit 0 / external interrupt 0 |
| Broche 37 | PD1 (INT1) — Port D bit 1 / external interrupt 1 |
| Broche 38 | PD2 (INT2) — Port D bit 2 / external interrupt 2 |
| Broche 39 | PD3 (INT3) — Port D bit 3 / external interrupt 3 |
| Broche 40 | PD4 (ICP1) — Port D bit 4 / Timer1 input capture |
| Broche 41 | PD5 (OC1A) — Port D bit 5 / Timer1 output compare A |
| Broche 42 | PD6 (WR) — Port D bit 6 / external memory write strobe |
| Broche 43 | PD7 (RD) — Port D bit 7 / external memory read strobe |
| Broche 44 | VCC — Digital supply voltage (4.5 V to 5.5 V) |
Applications typiques
ATMEGA8515-16MU convient pour 6 applications: Industrial Control Systems, LCD-Based Instrumentation, Telecom and Data Acquisition Peripherals, Motor Control and PWM Actuation, Embedded Learning and Legacy AVR Development, Battery-Powered and Low-Power Monitoring Nodes.
Industrial Control Systems
The ATMEGA8515-16MU fits industrial control well because its 4.5 V to 5.5 V supply matches legacy 5 V industrial rails, its 16 MHz clock yields 16 MIPS of deterministic single-cycle RISC execution, and the external memory interface supports up to 64 KB of SRAM for data logging. In a typical PLC-adjacent controller, the part drives relays and reads limit switches through its four 8-bit GPIO ports while a 16-bit timer generates PWM for actuators. The 512 B EEPROM stores calibration and configuration data that must survive power cycles, and brown-out detection prevents corrupted writes during brownout events. Its VQFN-44 package with exposed ground pad gives good thermal and electrical grounding on noisy industrial boards.
Recommandé
LCD-Based Instrumentation
The ATmega8515 family includes dedicated LCD drive control signals, making the ATMEGA8515-16MU a natural fit for panel meters, test instruments, and operator-interface boards. Running at 16 MHz provides 16 MIPS, enough headroom to refresh character LCDs or manage a memory-mapped graphical display using the 64 KB external memory interface as framebuffer space. The TWI and SPI buses handle communication with real-time clocks and sensor front-ends, while the USART provides a maintenance serial link. Because the entire application often fits in the 8 KB Flash with the 512 B EEPROM holding user calibration, a single VQFN-44 IC replaces what previously required a microprocessor plus external EPROM and SRAM chips, cutting board area and cost.
Recommandé
Telecom and Data Acquisition Peripherals
In telecom line cards and data-acquisition modules, the ATMEGA8515-16MU acts as a protocol bridge: its hardware USART streams measurement data at standard baud rates, the SPI bus interfaces to ADCs and serial memories, and the TWI port manages low-speed configuration devices. The 16 MHz clock supports baud-rate divisors for standard telecom speeds with low error, and the external memory interface (up to 64 KB) provides capture-buffer storage that the on-chip 512 B SRAM alone cannot hold. Sleep modes allow the module to idle between polling intervals, and the ISP Flash permits field firmware updates over the maintenance serial channel without desoldering the device.
Recommandé
Motor Control and PWM Actuation
The ATMEGA8515-16MU provides two 8-bit timers and one 16-bit timer with output-compare PWM channels, sufficient to drive DC motor H-bridges or servo actuators with hardware-timed waveforms that remain accurate even while the CPU handles communication. At 16 MHz, 8-bit PWM resolution reaches approximately 62.5 kHz carrier frequency, well above audible range for motor applications. The 32 working registers allow fast PID loop arithmetic in interrupt service routines, and the 5 V I/O directly gates typical power MOSFET drivers without level shifting. Legacy industrial motor boards on 5 V logic particularly benefit, since the part is native 5 V rather than tolerant-only.
Recommandé
Embedded Learning and Legacy AVR Development
The ATMEGA8515-16MU remains popular in education and legacy-code maintenance because the MajorCore community Arduino hardware package supports the ATmega8515 and ATmega162, letting developers use the Arduino IDE on this classic AVR. The 8 KB ISP Flash is large enough for teaching projects while small enough to teach efficient C and assembly coding, and the external memory interface lets students experiment with memory-system design up to 64 KB. In-system programming through SPI with a simple header makes lab workflows fast: no socket programmer required. Distributor stock of roughly 2,400 pieces as of 2026-09-18 keeps lab replenishment straightforward.
Recommandé
Battery-Powered and Low-Power Monitoring Nodes
Although the -16MU grade targets 5 V systems, it supports idle, power-down, and power-save sleep modes that reduce average current dramatically in duty-cycled monitoring nodes. A typical pattern runs the 16 MHz core only during sensor sampling and UART transmission, then enters power-down where operation stops until an external interrupt or watchdog wake-up. The 512 B EEPROM retains logged min/max and calibration between cycles without battery backup. Where supply rails sit below 4.5 V, the pin-identical ATMEGA8515L-8MU extends operation down to 2.7 V at 8 MHz, letting the same PCB serve both 5 V and 3.3 V product variants with one layout.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA8515-16MU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA8515-16MJ | ATMEGA8515L-8MU | ATMEGA162-16MU |
|---|---|---|---|---|
| Package | 44-VQFN (7x7) exposed pad | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB | 8 KB | 8 KB | 16 KB |
| Max Clock / Speed | 16 MHz (16 MIPS) | 16 MHz (16 MIPS) | 8 MHz (8 MIPS) | 16 MHz (16 MIPS) |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 2.7 V to 5.5 V | 4.5 V to 5.5 V |
| SRAM | 512 B (+64 KB ext.) | 512 B (+64 KB ext.) | 512 B (+64 KB ext.) | 1 KB (+64 KB ext.) |
| USART Count | 1 | 1 | 1 | 2 |
Principaux différenciateurs
- Native 16 MHz / 16 MIPS full-speed grade (vs ATMEGA8515L-8MU)
- External memory expansion up to 64 KB (vs ATMEGA162-16MU)
- Industry migration path documented by manufacturer (vs ATMEGA162-16MU)
Notes de conception
The VQFN-44 exposed pad on the underside is the primary ground connection and must be soldered to a ground pour. Use a solder-mask-defined opening with an array of 3x3 to 4x4 thermal vias (0.3 mm drill) connecting to inner ground planes; this both anchors the package mechanically and lowers ground inductance for SPI signals at 16 MHz. Do not rely solely on the perimeter GND pin (pin 18). When designing the stencil, segment the exposed-pad aperture into smaller squares (60-70% coverage) to avoid excessive solder paste squeeze-out during reflow.
Decouple VCC (pin 44) and AVCC (pin 19) with 100 nF ceramic capacitors placed within 2 mm of each pin, plus one bulk 10 uF capacitor per rail. AVCC powers the analog comparator and ADC-equivalent analog circuitry; connect it to VCC through a low-pass LC filter (10 uH ferrite bead plus 100 nF) even if only the comparator is used, since comparator noise directly affects AIN0/AIN1 threshold accuracy. Keep AREF (pin 17) decoupled with an isolated 100 nF cap and never drive it while the internal reference is enabled. Per Microchip AVR hardware design guidelines, keep the crystal traces short and guard them with ground.
Three recurring pitfalls: (1) Using the -16MU on a 3.3 V rail - it is rated 4.5 V to 5.5 V only; use ATMEGA8515L-8MU instead. (2) Enabling the external memory interface without configuring PD6/PD7 (WR/RD) and port C address lines, which silently removes those GPIO pins from general use - plan pin budget before enabling XMEM. (3) Forgetting the RESET pull-up (10 kOhm to VCC) required for reliable ISP programming; floating RESET causes sporadic entry into programming mode in noisy environments. Reserve a 2x3 ISP header in layout even if production programming is done in-circuit via bed-of-nails.
Informations de conformité
The provided verified web data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for ATMEGA8515-16MU. Consult official Microchip product compliance documentation for certified values.