ATMEGA8515-16MU - 8KB AVR MCU 16MHz VQFN-44 | Microchip
MPN: ATMEGA8515-16MU ✓ Hoạt độngATMEGA8515-16MU Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA8515-16MU — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATMEGA8515-16MU (cùng hình factor và footprint) — khác nhau ở Package, SRAM, Instruction Set, Core Architecture, Flash Memory.
ATMEGA8515-16MJ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATMEGA8515L-8MU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATMEGA162-16MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA8515-16MU Tỷ lệ tối đa & tính chất điện
| 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 |
| Tần số xung maksimum | 16 MHz (16 MIPS) |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| Hộp | 44-VQFN (7x7 mm) exposed pad |
| Kiểu lắp đặt | 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) |
| Trạng thái vòng đời | ACTIVE |
Cấu hình chân ATMEGA8515-16MU
| Chân 1 | PE0 (RXD) — Port E bit 0 / UART receive data |
| Chân 2 | PE1 (TXD) — Port E bit 1 / UART transmit data |
| Chân 3 | PE2 (XCK/AIN0) — Port E bit 2 / USART clock / analog comparator input 0 |
| Chân 4 | PE3 (AIN1) — Port E bit 3 / analog comparator input 1 |
| Chân 5 | PE4 — Port E bit 4 / general purpose I/O |
| Chân 6 | PE5 — Port E bit 5 / general purpose I/O |
| Chân 7 | PE6 — Port E bit 6 / general purpose I/O |
| Chân 8 | PE7 — Port E bit 7 / general purpose I/O |
| Chân 9 | PB0 (SS) — Port B bit 0 / SPI slave select |
| Chân 10 | PB1 (SCK) — Port B bit 1 / SPI serial clock |
| Chân 11 | PB2 (MOSI) — Port B bit 2 / SPI master data out |
| Chân 12 | PB3 (MISO) — Port B bit 3 / SPI master data in |
| Chân 13 | PB4 (OC0) — Port B bit 4 / Timer0 output compare PWM |
| Chân 14 | PB5 (OC1A) — Port B bit 5 / Timer1 output compare A PWM |
| Chân 15 | PB6 (OC1B) — Port B bit 6 / Timer1 output compare B PWM |
| Chân 16 | PB7 (OC2) — Port B bit 7 / Timer2 output compare PWM |
| Chân 17 | AREF — Analog reference voltage |
| Chân 18 | GND — Digital ground |
| Chân 19 | AVCC — Analog supply voltage |
| Chân 20 | PA0 (AD0) — Port A bit 0 / external memory address/data line |
| Chân 21 | PA1 (AD1) — Port A bit 1 / external memory address/data line |
| Chân 22 | PA2 (AD2) — Port A bit 2 / external memory address/data line |
| Chân 23 | PA3 (AD3) — Port A bit 3 / external memory address/data line |
| Chân 24 | PA4 (AD4) — Port A bit 4 / external memory address/data line |
| Chân 25 | PA5 (AD5) — Port A bit 5 / external memory address/data line |
| Chân 26 | PA6 (AD6) — Port A bit 6 / external memory address/data line |
| Chân 27 | PA7 (AD7) — Port A bit 7 / external memory address/data line |
| Chân 28 | PC7 (A15/T2) — Port C bit 7 / address line 15 / Timer2 input |
| Chân 29 | PC6 (A14/T1) — Port C bit 6 / address line 14 / Timer1 input |
| Chân 30 | PC5 (A13/T0) — Port C bit 5 / address line 13 / Timer0 input |
| Chân 31 | PC4 (A12) — Port C bit 4 / external memory address line 12 |
| Chân 32 | PC3 (A11) — Port C bit 3 / external memory address line 11 |
| Chân 33 | PC2 (A10) — Port C bit 2 / external memory address line 10 |
| Chân 34 | PC1 (A9) — Port C bit 1 / external memory address line 9 |
| Chân 35 | PC0 (A8) — Port C bit 0 / external memory address line 8 |
| Chân 36 | PD0 (INT0) — Port D bit 0 / external interrupt 0 |
| Chân 37 | PD1 (INT1) — Port D bit 1 / external interrupt 1 |
| Chân 38 | PD2 (INT2) — Port D bit 2 / external interrupt 2 |
| Chân 39 | PD3 (INT3) — Port D bit 3 / external interrupt 3 |
| Chân 40 | PD4 (ICP1) — Port D bit 4 / Timer1 input capture |
| Chân 41 | PD5 (OC1A) — Port D bit 5 / Timer1 output compare A |
| Chân 42 | PD6 (WR) — Port D bit 6 / external memory write strobe |
| Chân 43 | PD7 (RD) — Port D bit 7 / external memory read strobe |
| Chân 44 | VCC — Digital supply voltage (4.5 V to 5.5 V) |
Ứng dụng tiêu biểu
ATMEGA8515-16MU phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA8515-16MU — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Native 16 MHz / 16 MIPS full-speed grade (vsATMEGA8515L-8MU)
- External memory expansion up to 64 KB (vsATMEGA162-16MU)
- Industry migration path documented by manufacturer (vsATMEGA162-16MU)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.