AT91RM9200-QU-002 - ARM920T 180MHz MCU | Microchip | Industrial
MPN： AT91RM9200-QU-002 ✓ 啟用中AT91RM9200-QU-002 概覽
An ARM920T-based embedded microprocessor is a system-on-chip that combines a 32-bit RISC CPU core with memory management, cache, and integrated peripherals on a single die. The AT91RM9200 sits in the hierarchy of ARM9-based microcontrollers, which are themselves a subset of 32-bit embedded processors, which belong to the broader class of microprocessors and microcontrollers used across industrial, networking, and consumer electronics.
Key features include a 16 KB instruction cache and 16 KB data cache with write buffer, a memory management unit (MMU) supporting Linux and real-time operating systems, 122 programmable I/O lines, and a supply voltage range of 1.65 V to 1.95 V for the core. The device delivers approximately 200 MIPS at 180 MHz, making it suitable for compute-intensive embedded tasks that require both performance and low power consumption.
The AT91RM9200 architecture includes a 16-bit external bus interface, multiple USARTs, master/slave SPI channels, a two-wire interface (TWI), 16-bit timers, an I2S audio interface, and a multimedia card interface (MCI). This peripheral mix enables single-chip solutions for industrial gateways, data loggers, and network appliances without requiring external bridge chips.
Typical applications include industrial automation controllers, Ethernet-to-serial gateways, point-of-sale terminals, and embedded Linux systems. The integrated 10/100 Ethernet MAC and USB host/device interfaces reduce BOM cost and board area in networked embedded designs.
When designing with the AT91RM9200-QU-002, pay close attention to the 1.8 V core supply decoupling and the 3.3 V I/O rail sequencing. The 208-pin PQFP package requires careful PCB layout to manage the high pin count and maintain signal integrity on the external memory bus.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection and sourcing decisions.
直接替換替代品，適用於 AT91RM9200-QU-002 — 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。
AT91RM9200-QI-002
✅ 直接替換📋 參考替代品（不在目錄中）
AT91RM9200-QU-002-T
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AT91RM9200-QI-002-T
✅ 直接替換📋 參考替代品（不在目錄中）
AT91RM9200-QU-002-999
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AT91RM9200-QU-002 最大額定值與電氣特性
| Core Processor | ARM920T |
| Core Size | 16/32-Bit |
| 最大時脈頻率 | 180 MHz |
| Program Memory Size | 128 KB (128K x 8) ROM |
| RAM Size | 48K x 8 SRAM |
| Supply Voltage (Core) | 1.65 V to 1.95 V |
| Supply Voltage (I/O) | 3.3 V |
| 工作溫度 | -40C to +85C |
| 封裝 | 208-PQFP (28x28 mm) |
| 安裝類型 | Surface Mount |
| Number of I/O | 122 |
| 資料匯流排寬度 | 32 Bit |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| Ethernet | 10/100 Ethernet MAC |
| USB | Full Speed USB Host and Device |
| RoHS 狀態 | Compliant |
AT91RM9200-QU-002 208-pqfp (28x28 mm) 腳位配置指南
AT91RM9200-QU-002（208-pqfp (28x28 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： AT91RM9200-QU-002.
請參閱 資料表 以查看完整腳位配置。
典型應用
AT91RM9200-QU-002 適用於 6 應用s: Industrial Automation Controller, Ethernet-to-Serial Gateway, Point-of-Sale Terminal, Embedded Linux System, Data Logger and Telemetry Unit, Network Appliance and Router.
Industrial Automation Controller
The AT91RM9200-QU-002 fits industrial automation controllers because its 180 MHz ARM920T core delivers approximately 200 MIPS while the integrated 10/100 Ethernet MAC and 122 I/O lines eliminate external bridge chips. In a typical PLC or motion controller, the device runs a real-time operating system via its MMU and services fieldbus traffic through the Ethernet MAC and multiple USARTs. The -40C to +85C industrial temperature rating and 1.65 V to 1.95 V core supply support factory-floor environments. Designers should note that the 208-pin PQFP package requires careful thermal relief on the 1.8 V core rail; unlike a BGA, the leaded package allows visual inspection of solder joints, which simplifies qualification for high-reliability industrial builds.
推薦
Ethernet-to-Serial Gateway
The AT91RM9200-QU-002 is well suited to Ethernet-to-serial gateways because it integrates a 10/100 Ethernet MAC and multiple USARTs on a single die, removing the need for an external UART bridge. In this application the ARM920T core runs a lightweight TCP/IP stack and routes packets between the Ethernet PHY and RS-232/RS-485 transceivers connected to the USART pins. The 16 KB instruction and 16 KB data caches keep protocol processing responsive at 180 MHz, while the 48 KB SRAM buffers packet bursts. A practical consideration is that the 3.3 V I/O rail must be sequenced after the 1.8 V core rail to avoid latch-up; the 208-pin PQFP footprint also demands careful trace-length matching on the external memory bus.
推薦
Point-of-Sale Terminal
The AT91RM9200-QU-002 suits point-of-sale terminals because its full-speed USB host and device interfaces connect directly to barcode scanners, card readers, and receipt printers without external USB controllers. The ARM920T core at 180 MHz handles transaction processing and display updates, while the integrated MCI interface supports SD card storage for transaction logs. The 122 I/O lines drive keypad matrices and status LEDs. In a typical POS design, the 1.65 V to 1.95 V core supply is generated by a dedicated LDO to keep noise low, and the 3.3 V I/O rail powers the USB and MCI interfaces. Designers should budget for the 208-pin PQFP's board area and provide adequate decoupling on both supply rails.
推薦
Embedded Linux System
The AT91RM9200-QU-002 is a classic platform for embedded Linux systems because its ARM920T core includes a memory management unit (MMU) required by the Linux kernel. The 180 MHz clock and 16 KB/16 KB caches provide adequate performance for headless Linux appliances, while the 16-bit external bus interface connects to SDRAM and flash. The integrated Ethernet MAC and USB host/device interfaces support network and storage connectivity without additional controllers. A key design consideration is that the 1.65 V to 1.95 V core rail must be stable under load transients; use a low-ESR bulk capacitor near the core supply pins. The 208-pin PQFP package simplifies probing during bring-up compared with BGA alternatives.
推薦
Data Logger and Telemetry Unit
The AT91RM9200-QU-002 fits data loggers and telemetry units because its multiple USARTs, SPI, and TWI interfaces connect directly to sensors, ADCs, and radio modules. The 48 KB SRAM buffers sample bursts, and the MCI interface stores long-term logs on SD cards. At 180 MHz the ARM920T core can run data-compression and protocol-encoding tasks in software, reducing external component count. The -40C to +85C temperature range supports outdoor and industrial deployments. Designers should note that the 1.65 V to 1.95 V core supply is sensitive to noise from switching regulators; use an LDO or a well-filtered DC-DC rail, and keep the 208-pin PQFP's analog-adjacent pins away from high-current traces.
推薦
Network Appliance and Router
The AT91RM9200-QU-002 is used in network appliances and routers because the integrated 10/100 Ethernet MAC handles packet traffic while the ARM920T core runs routing and firewall software. The 180 MHz clock and 16 KB caches keep forwarding latency low, and the 122 I/O lines drive status LEDs and reset logic. In a typical design the Ethernet MAC connects to an external PHY through the MII interface, and the USB host port supports configuration or storage. A practical trade-off is that the 208-pin PQFP package occupies more board area than a BGA, but it allows easier rework and inspection. Ensure the 3.3 V I/O rail is well decoupled to maintain Ethernet signal integrity.
推薦
推薦產品摘要
工程參考資料，適用於 AT91RM9200-QU-002 — 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 | AT91RM9200-QI-002 | AT91RM9200-CJ-002 | AT91RM9200-QU-002-T | AT91RM9200-QI-002-T |
|---|---|---|---|---|---|
| Package | 208-PQFP (28x28) | 208-PQFP (28x28) - same | 256-BGA (15x15) - different | 208-PQFP (28x28) - same | 208-PQFP (28x28) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Processor | ARM920T | ARM920T | ARM920T | ARM920T | ARM920T |
| Maximum Clock Frequency | 180 MHz | 180 MHz | 180 MHz | 180 MHz | 180 MHz |
| Program Memory Size | 128 KB ROM | 128 KB ROM | 128 KB ROM | 128 KB ROM | 128 KB ROM |
| RAM Size | 48K x 8 SRAM | 48K x 8 SRAM | 48K x 8 SRAM | 48K x 8 SRAM | 48K x 8 SRAM |
| Supply Voltage (Core) | 1.65 V to 1.95 V | 1.65 V to 1.95 V | 1.65 V to 1.95 V | 1.65 V to 1.95 V | 1.65 V to 1.95 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Ethernet | 10/100 Ethernet MAC | 10/100 Ethernet MAC | 10/100 Ethernet MAC | 10/100 Ethernet MAC | 10/100 Ethernet MAC |
| USB | Full Speed USB Host and Device | Full Speed USB Host and Device | Full Speed USB Host and Device | Full Speed USB Host and Device | Full Speed USB Host and Device |
主要差異化特點
- Leaded PQFP package enables visual inspection (對比AT91RM9200-CJ-002)
- Industrial temperature grade available in same footprint (對比AT91RM9200-QI-002)
- Integrated Ethernet MAC and USB reduce BOM cost (對比AT91RM9200-CJ-002)
設計說明
The AT91RM9200-QU-002 core requires a tightly regulated 1.65 V to 1.95 V supply, nominally 1.8 V. Use a low-noise LDO or a well-filtered DC-DC converter with at least 100 uF of bulk capacitance and 0.1 uF ceramic decoupling on each VDDCORE pin. Estimated: at 180 MHz the core current can exceed 100 mA, so verify the regulator's transient response under load steps. Sequence the 1.8 V core rail before the 3.3 V I/O rail to avoid latch-up.
The 208-pin PQFP package has a 0.5 mm lead pitch, requiring careful PCB layout with adequate solder-mask dams between pads. Route the external memory bus traces with matched lengths and keep them away from the Ethernet and USB differential pairs. Place decoupling capacitors within 5 mm of each supply pin. For the 28x28 mm body, provide a thermal pad area under the device if the design dissipates significant power.
A common pitfall with the AT91RM9200-QU-002 is insufficient decoupling on the 1.8 V core rail, which causes random resets at 180 MHz. Another is incorrect boot-mode strapping on the BMS and JTAGSEL pins, which prevents the device from booting from the intended memory. Always verify the boot configuration against the Microchip AT91RM9200 datasheet before power-up, and provide a JTAG header for debug access.
合規資訊
RoHS compliant per distributor data. Not AEC-Q100 qualified - this is an industrial-grade device rated -40C to +85C.
