ATMEGA8515-16JUR - 8KB AVR MCU 16MHz 44-PLCC | Microchip
料号： ATMEGA8515-16JUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.85 | $485.00 |
| 500 | $4.3 | $2,150.00 |
| 1,000 | $3.85 | $3,850.00 |
ATMEGA8515-16JUR 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one silicon die. Within the power-management and embedded-system hierarchy, the ATmega8515 belongs to the classic AVR ATmega family, positioned as an external-memory-capable member above compact parts like the ATmega8 and alongside the ATmega8535.
Key differentiating features include an external memory interface supporting up to 64KB of external SRAM, 35 general-purpose I/O lines, 32 general-purpose working registers, and In-System Programmable Flash with Read-While-Write capability. The AVR advanced RISC architecture executes 130 powerful instructions, most in a single clock cycle, which yields the 1 MIPS/MHz efficiency that made the AVR family an industry standard.
Technically, the ATmega8515 provides two flexible Timer/Counters with compare modes, internal and external interrupt sources, a programmable Serial USART, and a programmable Watchdog Timer with an internal oscillator. These peripherals allow deterministic interrupt-driven designs without external glue logic for many medium-complexity control tasks.
Typical applications include industrial control boards that require external memory expansion, legacy design maintenance where the 44-PLCC through-hole-style solderable footprint is still preferred, and motor or process control systems using the USART for communication and timers for PWM generation.
A key design consideration: this is a 4.5V to 5.5V industrial-grade part. Do not use it in 3.3V designs - the low-voltage ATmega8515L variant is required below 4.5V operation.
This page synthesizes distributor availability, drop-in alternatives within the same PLCC-44 footprint, and practical design guidance not found in the manufacturer datasheet. Pricing shown is as of 2026-09-18.
直接替换替代料： ATMEGA8515-16JUR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATMEGA8515-16JUR （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Instructions, EEPROM, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
ATMEGA8515-16JI
✅ 直接替换✓ 有现货
$5.44 / 个
查看数据手册 →ATMEGA8515-16JC
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.85 / 个
查看数据手册 →ATMEGA8535-16JUR
✅ 直接替换✓ 有现货
$2.65 / 个
查看数据手册 →ATMEGA8535L-8JU
✅ 直接替换✓ 有现货
$1.72 / 个
查看数据手册 →ATMEGA8515L-8JU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.9 / 个
查看数据手册 →ATMEGA8515-16JUR 最大额定值与电气特性
| Core | AVR 8-bit RISC |
| Max Clock Frequency | 16 MHz |
| Throughput | 16 MIPS at 16 MHz |
| Flash Memory | 8 KB (4K x 16) |
| SRAM | 512 B |
| EEPROM | 512 B |
| External Memory Interface | Up to 64 KB external SRAM |
| 电源电压 | 4.5 V to 5.5 V |
| General Purpose I/O Lines | 35 |
| Working Registers | 32 |
| Instruction Set | 130 instructions, most single-cycle |
| Timers/Counters | 2 flexible Timer/Counters with compare modes |
| Serial Interfaces | Programmable Serial USART |
| Watchdog Timer | Programmable with internal oscillator |
| Interrupts | Internal and external interrupt sources |
| Flash Programming | In-System Programmable with Read-While-Write |
| 封装 | 44-PLCC (16.6 x 16.6 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (industrial) |
ATMEGA8515-16JUR 44-plcc (16.6 x 16.6 mm) 引脚配置指南
ATMEGA8515-16JUR（44-plcc (16.6 x 16.6 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATMEGA8515-16JUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATMEGA8515-16JUR 适用于 6 应用s: Industrial Control Systems, External Memory Expansion Designs, Legacy Design Maintenance, Embedded Communication Nodes, Motor and Process Control, Instrumentation and Test Equipment.
Industrial Control Systems
The ATMEGA8515-16JUR is well suited to industrial control boards because its industrial temperature rating (-40C to +85C), 4.5V to 5.5V supply tolerance for noisy 5V rails, and programmable Watchdog Timer address the reliability demands of factory environments. The external memory interface supporting up to 64KB of external SRAM allows large data buffering, data logging tables, or HMI buffers that exceed the internal 512B SRAM. Two flexible Timer/Counters with compare modes generate PWM outputs for actuator and motor control, while the USART links to fieldbus converters or SCADA gateways. The 35 GPIO lines drive relays, optocouplers, and status indicators directly with minimal external logic.
推荐
External Memory Expansion Designs
Applications needing more RAM than typical 8-bit MCUs provide benefit directly from the ATMEGA8515-16JUR's defining feature: an external memory interface that addresses up to 64KB of external SRAM through its multiplexed address/data bus and ALE signal. Data acquisition systems, protocol analyzers, and legacy terminal controllers use this interface to buffer measurement records or communication frames far beyond the internal 512B SRAM. At 16 MHz, bus cycles support standard SRAM timing with zero-wait-state access as defined in the datasheet. The Read-While-Write Flash architecture lets firmware update lookup tables in EEPROM while executing from Flash, sustaining deterministic control-loop timing during data management operations.
推荐
Legacy Design Maintenance
Thousands of legacy boards shipped with ATmega8515-family parts in 44-PLCC packages, and the ATMEGA8515-16JUR keeps those production lines alive without PCB revision. The PLCC footprint supports inexpensive PLCC sockets, enabling field firmware or device replacement without desoldering - a significant serviceability advantage over fine-pitch TQFP alternatives. Because the -16JUR is a reel suffix of the still-active ATmega8515 line, ongoing availability remains manageable, and the same-brand drop-in alternatives listed on this page (identical footprint) hedge against allocation periods. Firmware written for original ATmega8515 silicon runs unchanged, protecting software investment accumulated over decades of deployment.
推荐
Embedded Communication Nodes
The ATMEGA8515-16JUR serves as a cost-effective communication controller where its programmable Serial USART handles RS-232, RS-485 (via external transceiver), or protocol-conversion tasks. The AVR core executes 130 mostly single-cycle instructions, sustaining 16 MIPS at 16 MHz, which provides adequate headroom for software UART framing, checksum computation, and command parsing at typical 9600 to 115200 baud rates. The 512B EEPROM stores node addresses and configuration parameters that survive power cycling without external NVM. Timer/Counter compare modes generate precise baud-rate clocks and timing strobes, while external interrupts support deterministic response to network wake-up or attention events in multi-drop industrial networks.
推荐
Motor and Process Control
The two flexible Timer/Counters with compare modes make the ATMEGA8515-16JUR effective for PWM generation in DC motor speed control, heater duty-cycle regulation, and valve positioning. At 16 MHz, PWM resolution of 8 to 10 bits is achievable at frequencies suitable for typical inductive loads, per the datasheet timer operating modes. The Watchdog Timer provides automatic recovery from firmware lockups, an essential safety behavior when controlling physical processes. The 35 GPIO lines interface directly with encoder inputs via external interrupts, and the 4.5V to 5.5V industrial-grade supply range rides through noisy power environments common near motor drives. The external memory interface can log process history to external SRAM for diagnostics.
推荐
Instrumentation and Test Equipment
Bench instruments, sensor conditioners, and test fixtures use the ATMEGA8515-16JUR for control sequencing, calibration data storage, and user-interface management. The 512B EEPROM retains calibration constants across power cycles and service intervals, while the USART reports readings to host PCs. The industrial temperature grade allows deployment in unconditioned environments such as production-floor test stations. Eight-bit AVR GPIOs directly drive 7-segment displays, keypads, and indicator LEDs without port expanders. Where analog measurement is needed, designers pair this MCU with an external ADC over its parallel-capable bus or bit-banged SPI-compatible lines. The 16 MIPS throughput supports filtering and linearization math in fixed point with predictable cycle timing.
推荐
推荐产品汇总
工程参考数据： ATMEGA8515-16JUR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATMEGA8515-16JI | ATMEGA8515-16JC | ATMEGA8535-16JUR | ATMEGA8535L-8JU | ATMEGA8515L-8JU |
|---|---|---|---|---|---|---|
| Package | 44-PLCC (16.6 x 16.6 mm) | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 8 MHz | 8 MHz |
| 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 | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| External Memory Interface | Up to 64 KB external SRAM | Up to 64 KB external SRAM | Up to 64 KB external SRAM | Reduced (per 8535 datasheet) | Reduced (per 8535 datasheet) | Up to 64 KB external SRAM |
| Integrated ADC | No | No | No | Yes, 8-channel 10-bit | Yes, 8-channel 10-bit | No |
| Packing | Tape & Reel (R suffix) | Tray | Tray | Tape & Reel | Tray | Tray |
关键差异点
- External memory interface up to 64KB SRAM （对比 ATMEGA8535-16JUR)
- Industrial temperature grade with reel packing （对比 ATMEGA8515-16JC)
- 16 MHz speed grade for 5V systems （对比 ATMEGA8515L-8JU)
设计说明
The ATMEGA8515-16JUR requires a 4.5V to 5.5V supply. Do not power it from a 3.3V rail - brown-out or erratic operation will result. Use a 100nF ceramic decoupling capacitor at VCC and GND pins plus a 10uF bulk capacitor per board section. If brown-out detection behavior is required, verify the BOD configuration in the datasheet electrical characteristics, and set fuses accordingly. When driving many GPIO loads at 5V, budget the total port current against the datasheet maximum per-port and per-device limits to avoid VCC sag and reset glitches.
PLCC-44 packages are typically used with PLCC sockets on legacy boards. If soldering directly, ensure the land pattern follows the datasheet package drawing; PLCC leads are J-shaped and require fillet inspection on all four sides. Decouple each VCC/GND pair with 100nF placed within a few millimeters of the pins. The XTAL1/XTAL2 crystal circuit should place the crystal and load capacitors close to the package, with a ground guard ring for noisy industrial environments. Keep the RESET trace short and add a 10k pull-up for robust power-up.
PLCC pin numbering is counter-clockwise when viewed from above - the opposite of DIP numbering. Mis-orienting the device in a socket is the most common assembly failure for this package. Second, do not assume the ATmega8535 is a code-compatible substitute: its ADC replaces part of the external memory interface, so firmware using external SRAM will fail on an 8535 without modification (see Microchip migration guidance and application note AVR087 for family migration issues). Third, the -16 grade is 5V-only; never drop the low-voltage L variant into a design without re-verifying crystal and logic-level compatibility at 8 MHz.
合规信息
Compliance status not stated in the provided verified web data; consult the Microchip product page and current certificate documents for RoHS/REACH status of this ordering code.
