ATMEGA128L-8MC - 8MHz 128KB AVR MCU | Microchip Technology
MPN： ATMEGA128L-8MC ✗ 停產ATMEGA128L-8MC 概覽
A microcontroller is a programmable semiconductor that executes firmware, reads inputs, controls outputs, and manages communication and timing functions in an embedded system. The ATmega128L family combines an AVR CPU core with flash program memory, data memory, EEPROM, an eight-channel 10-bit ADC, JTAG on-chip debugging, and multiple serial peripherals. This places it in the broader hierarchy of embedded controller -> 8-bit microcontroller -> AVR microcontroller -> low-power CMOS integrated circuit.
The verified ATMEGA128L-8MC listing specifies 8 MHz operation and 128KB flash, while the family datasheet material identifies 4KB SRAM, 4KB EEPROM, an eight-channel 10-bit ADC, JTAG, and throughput up to 16 MIPS at 16 MHz. The 8 MHz speed grade provides a lower operating-frequency option than the 16 MHz family variant, which can reduce processing demand and may support designs where the operating point is intentionally below the maximum device speed.
Typical uses include industrial control, embedded automation, motor control, metering, and low-power board designs. Its integrated ADC is useful for analog sensor acquisition, while serial interfaces support connection to sensors, transceivers, displays, or external memory. The JTAG interface enables on-chip debugging and programming workflows described in the family documentation.
Designers should verify supply voltage, clock source, pin multiplexing, ADC reference, reset behavior, and programming requirements in the manufacturer datasheet before layout release. Because the verified web data does not provide a current unit price, stock statement, complete pin assignment, or all operating limits, those values must not be inferred. This page separates confirmed distributor data from parameters requiring manufacturer documentation or quotation confirmation.
This page combines verified distributor specifications, family-level datasheet facts, practical design guidance, and a conservative replacement assessment for engineers evaluating ATMEGA128L-8MC sourcing and redesign decisions.
直接替換替代品，適用於 ATMEGA128L-8MC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATMEGA128L-8MC （相同外形與佔位） — 差異在於 Package, RoHS Status, Operating Temperature, SRAM, EEPROM.
ATMEGA128L-8AN
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA128L-8MU
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA128A-MU
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA128A-MNR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA1284-MU
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA128L-8MC 最大額定值與電氣特性
| Product Type | 8-bit AVR embedded microcontroller |
| 最大時脈頻率 | 8 MHz |
| Flash Memory | 128 KB |
| SRAM | 4 KB |
| EEPROM | 4 KB |
| ADC Resolution | 10-bit |
| ADC Channels | 8 channels |
| JTAG Interface | Yes |
| Maximum Throughput | 16 MIPS at 16 MHz |
| Architecture | AVR enhanced RISC |
| Core | 8-bit |
| 封裝 | 64-QFN, 9x9 mm |
| 安裝類型 | Surface mount |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
ATMEGA128L-8MC 64-qfn, 9x9 mm 腳位配置指南
ATMEGA128L-8MC（64-qfn, 9x9 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATMEGA128L-8MC.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATMEGA128L-8MC 適用於 6 應用s: Industrial Automation Controller, Motor Control and Embedded Drives, Metering and Sensor Acquisition, Embedded Communication Hub, Programmable Control and Data Logging, Low-Power Embedded Board.
Industrial Automation Controller
The ATMEGA128L-8MC fits industrial automation work that needs an 8-bit controller with substantial program memory and local analog measurement. Its verified 128KB flash supports larger firmware images for sequencing, state machines, communication handling, and diagnostics, while the family material identifies 4KB SRAM, 4KB EEPROM, an eight-channel 10-bit ADC, and JTAG. The device can monitor sensors and coordinate actuators through board-level GPIO. Because operating voltage, I/O limits, timing, and exact pin multiplexing are not provided in the verified snippets, industrial qualification must include manufacturer electrical data, transient protection, watchdog strategy, and environmental testing. The 8 MHz speed grade is a deliberate lower-frequency option when the design does not require the family’s 16 MHz maximum.
推薦
Motor Control and Embedded Drives
ATMEGA128L-8MC is a reasonable candidate for compact motor-control and embedded-drive logic where an 8-bit MCU must combine control firmware with ADC feedback and serial diagnostics. The verified family material identifies 128KB flash, 4KB SRAM, 4KB EEPROM, an eight-channel 10-bit ADC, and JTAG, which provide resources for position or speed loops, limit handling, fault flags, and service interfaces. The MCU does not directly replace a power stage: MOSFET drivers, gate resistors, current sensing, protection, and thermal management must be designed separately. The supplied data does not confirm PWM resolution, timer channel mappings, input thresholds, or maximum pin currents, so the datasheet must be checked before assigning motor-control signals.
推薦
Metering and Sensor Acquisition
The eight-channel 10-bit ADC makes ATMEGA128L-8MC relevant to metering and sensor-acquisition designs that need local conversion without an external ADC. Its 128KB flash can hold calibration tables, measurement algorithms, communication stacks, and event logging, while 4KB EEPROM is available for persistent configuration if the application requires it. The ADC’s usable resolution still depends on reference voltage, input impedance, sampling time, source impedance, oversampling, and calibration; none of those values is confirmed in the supplied search data. Design the analog front end with filtering and protection, and verify the ADC pin map and analog-multiplexing behavior from the complete manufacturer datasheet before finalizing the schematic.
推薦
Embedded Communication Hub
ATMEGA128L-8MC can serve as a protocol hub or low-power embedded communications node when the design requires deterministic 8-bit control logic alongside 128KB of firmware space. The verified family material identifies UART-related and other serial capabilities only indirectly through the ATmega family description; exact USART channel count, baud-rate range, SPI behavior, and TWI pin assignments must be confirmed in the manufacturer documentation. Use the MCU for protocol framing, buffering, status monitoring, and supervisory logic rather than assuming high-throughput networking performance. For field deployments, add ESD protection, connector filtering, ground-plane discipline, and a watchdog strategy. JTAG availability also helps with production programming and firmware validation, but security requirements should be assessed separately.
推薦
Programmable Control and Data Logging
ATMEGA128L-8MC is useful for embedded controllers that need more code space than a very small MCU while retaining the simplicity of an 8-bit AVR architecture. The verified 128KB flash capacity can accommodate structured control software, lookup tables, protocol code, and diagnostic routines, and the family material identifies EEPROM and JTAG for configuration retention and development. The internal SRAM value is listed as 4KB in the supplied family data, so applications should account for stack depth, buffers, and RTOS-like scheduling if used. This is not a substitute for a high-end processor when the product requires large graphics, intensive networking, or real-time multimedia. Confirm clock, reset, programming, and watchdog behavior in the datasheet before freezing firmware architecture.
推薦
Low-Power Embedded Board
The low-power CMOS AVR positioning of ATMEGA128L-8MC makes it a candidate for compact embedded boards, provided the actual sleep and active-current figures are confirmed from the manufacturer datasheet. Its 8 MHz speed grade can support control tasks while avoiding operation at the family’s 16 MHz maximum, and its EEPROM can retain configuration without continuous RAM usage. Battery-powered designs must still account for sensor standby current, regulator quiescent current, ADC reference behavior, pull-up leakage, and communications duty cycle. The supplied data does not provide numerical power specifications, so a battery-life calculation cannot be completed from the verified evidence. Use low-leakage passives, controlled GPIO states, and a documented sleep/wake architecture.
推薦
推薦產品摘要
工程參考資料，適用於 ATMEGA128L-8MC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATMEGA128L-8AN | ATMEGA128L-8MU | ATMEGA128A-MU | ATMEGA128A-MNR | ATMEGA1284-MU |
|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | 8-bit AVR enhanced RISC | 8-bit AVR family | 8-bit AVR RISC | 8-bit AVR family | 8-bit AVR family | 8-bit AVR family |
主要差異化特點
- 128KB flash supports larger embedded firmware than small-format MCUs (對比ATMEGA128L-8MU)
- Integrated eight-channel 10-bit ADC reduces external conversion need (對比ATMEGA128A-MU)
- JTAG support assists firmware validation (對比ATMEGA1284-MU)
設計說明
Validate the supply range, decoupling, and power sequencing directly from the manufacturer datasheet before layout. The verified web data confirms an 8-bit AVR MCU but does not provide operating voltage or current limits. Place the required bulk and high-frequency decoupling capacitors close to the device power pins, keep analog and digital return paths controlled, and confirm regulator headroom for the selected clock and peripheral load. Do not calculate thermal or current margins from unverified values.
Treat the 64-QFN 9x9 mm package as a pin-sensitive footprint and obtain the official land pattern before PCB release. The supplied data does not include the complete pinout, exposed-pad connection, or pin-number orientation. Cross-check the CAD library against the manufacturer package drawing, verify pin 1 orientation, preserve solder-mask and paste features, and inspect the QFN after assembly. An apparently similar package drawing is not sufficient evidence of pin compatibility.
Do not assume that a related ATmega128L or ATmega128A MPN is a drop-in replacement solely because the memory sizes and family name are similar. Compare the exact package, operating-voltage grade, speed grade, pin multiplexing, ADC channels, serial peripherals, reset behavior, fuse defaults, and programming interface. The verified cross-reference search identifies ATMEGA128L-8MU as a close comparison, but it does not provide enough package and electrical detail to approve a production substitution.
For ADC, serial, or external clock connections, verify signal levels, input thresholds, pin multiplexing, and maximum transition rates in the manufacturer datasheet. Keep analog inputs short where possible, route them away from high-current switching paths, and provide local filtering where sensor noise requires it. For communication interfaces, use the recommended protection network and controlled return path. Exact rise/fall-time and drive-strength data are not present in the supplied sources and should not be guessed.
合規資訊
Compliance status is not present in the supplied verified manufacturer or distributor snippets. AEC-Q100 is not applicable unless a specific automotive-qualified ordering option is identified.
