AT91RM9200-CJ-002 - ARM920T MCU 180MHz 128KB ROM BGA-256 | Microchip
MPN: AT91RM9200-CJ-002 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.1 | $221.00 |
| 100 | $19.8 | $1,980.00 |
| 500 | $17.55 | $8,775.00 |
| 1,000 | $15.4 | $15,400.00 |
AT91RM9200-CJ-002 Overview
An ARM920T-based microcontroller is a 16/32-bit RISC microprocessor core that combines the ARM7TDMI integer pipeline with separate instruction and data caches plus a memory management unit, making it suitable for running full operating systems such as Linux or Windows CE. As a product category, this sits within the ARM9 family of application processors, which targets industrial control, networking, and human-machine interface designs that demand deterministic real-time behavior with reasonable power dissipation. The architecture is widely adopted in point-of-sale terminals, building automation, and embedded gateways where deterministic interrupt handling is essential.
Key features of the AT91RM9200-CJ-002 include a 10/100 Ethernet MAC with full DMA, a Full Speed USB Host and Device controller, a Multimedia Card Interface, I2S audio, three USARTs, two SPIs (master/slave), a TWI bus, a 16-bit timer/counter, and a real-time clock. The 256-BGA (15x15) industrial-temperature package (-40C to +85C) is suitable for harsh environment designs and is backed by a broad peripheral set that minimizes external glue logic.
The device targets core voltage (Vcc) operation from 1.65 V to 1.95 V and includes an internal oscillator, four DMA channels, and an in-circuit emulator with debug communication channel for trace-aware debugging. Power management includes four programmable external interrupt lines, a watchdog timer, and a real-time clock with separate power domain for low-power standby.
Typical applications include industrial automation controllers, Ethernet-attached embedded web servers, USB peripherals, building access control, and point-of-sale terminals. The integrated MAC and USB controllers allow single-chip designs that previously required a discrete network or peripheral controller.
When designing with this part, plan PCB layout for the 256-ball BGA footprint, ensure 1.65 V-1.95 V core supply decoupling, and verify BGA ball pad pattern against the manufacturer footprint for manufacturability.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet, supporting faster sourcing and BOM risk reduction for AT91RM9200-CJ-002 designs.
Drop-in alternatives for AT91RM9200-CJ-002 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AT91RM9200-CJ-002 (same form factor and footprint) — differing in Core Architecture, Ethernet, Operating Temperature, Package, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AT91RM9200-CJ
✅ Drop-In📋 Reference alternative (not in catalog)
AT91RM9200-CI-002
✅ Drop-In📋 Reference alternative (not in catalog)
AT91RM9200-CU-002
✅ Drop-In📋 Reference alternative (not in catalog)
AT91RM9200-QI-002-T
✅ Drop-In📋 Reference alternative (not in catalog)
AT91SAM9260B-CU
✅ Drop-In✓ In Stock
$9.75 / Unit
View Datasheet →AT91RM9200-CJ-002 Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM920T ARM Thumb (16/32-bit RISC) |
| Maximum Clock Speed | 180 MHz |
| MIPS Performance | 200 MIPS at 180 MHz |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| MMU | Yes |
| Internal ROM | 128 KB (128K x 8) |
| Internal SRAM | 48 KB |
| Supply Voltage (Vcc/Vdd) | 1.65 V to 1.95 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 256-ball BGA (15x15 mm) |
| Mounting Type | Surface Mount |
| Ethernet | 10/100 MAC with full DMA |
| USB | Full Speed USB Host + Device |
| DMA Channels | 4 |
| Oscillator | Internal |
| Debug Interface | In-circuit emulator + ETM |
| RoHS Status | Compliant |
AT91RM9200-CJ-002 256-ball bga (15x15 mm) Pin Configuration Guide
Pin configuration for AT91RM9200-CJ-002 (256-ball bga (15x15 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for AT91RM9200-CJ-002.
Refer to the datasheet for full pin configuration.
Typical Applications
AT91RM9200-CJ-002 is suitable for 6 applications: Industrial Ethernet Gateways, Point-of-Sale (POS) Terminals, Building Access Control Panels, USB Peripheral Hubs and Devices, Industrial Automation Controllers, Multimedia Card / SD-Card Embedded Storage Hosts.
Industrial Ethernet Gateways
The AT91RM9200-CJ-002's integrated 10/100 Ethernet MAC with full DMA, ARM920T core at 180 MHz, and industrial -40 C to +85 C rating make it a fit for Ethernet-attached industrial gateways. The on-chip MAC removes the need for an external PHY controller, while the 200 MIPS throughput handles TCP/IP stacks and Modbus gateways in real time. The 256-ball BGA footprint supports compact gateway PCB layouts where space is at a premium and the industrial temperature rating allows DIN-rail cabinet deployment.
Recommended
Point-of-Sale (POS) Terminals
POS terminals need reliable Ethernet and USB connectivity plus a deterministic processor core, all of which the AT91RM9200-CJ-002 delivers. The integrated USB host/device controller supports barcode scanners, receipt printers, and magnetic-stripe readers without external hub ICs. The 200 MIPS ARM920T runs a full Linux distribution for payment processing and inventory management, while the industrial temperature grade suits retail back-office deployments where HVAC ventilation is poor.
Recommended
Building Access Control Panels
Building access controllers demand reliable Ethernet connectivity for management traffic, USB for reader peripherals, and an industrial temperature rating for unheated electrical closets. The AT91RM9200-CJ-002 supplies all three plus an on-chip real-time clock for time-stamping audit logs. The 16-bit timer, watchdog, and programmable external interrupt lines support tamper detection and fail-secure door lock control. The integrated MAC allows direct attachment to a managed Ethernet switch without a companion PHY controller.
Recommended
USB Peripheral Hubs and Devices
The integrated Full Speed USB host/device controller on the AT91RM9200-CJ-002 makes it a strong fit for USB peripherals such as industrial barcode readers, USB-to-Ethernet bridges, and USB mass-storage appliances. The 200 MIPS throughput allows full-speed isochronous USB traffic alongside application logic, while the 48 KB SRAM provides buffering for USB packets without off-chip memory. The 1.65 V to 1.95 V core supply simplifies USB bus-powered designs where a single low-voltage rail is preferred.
Recommended
Industrial Automation Controllers
Programmable logic controllers, sensor aggregation hubs, and motor-drive supervisory boards benefit from the AT91RM9200-CJ-002's combination of three USARTs, two SPIs, TWI, I2S, and the 16-bit timer block. The ARM920T core runs deterministic real-time operating systems such as RTEMS or eCos while the integrated Ethernet MAC provides plant-network uplink. The industrial -40 C to +85 C rating allows deployment in cabinet locations adjacent to motor drives where temperatures routinely exceed 70 C.
Recommended
Multimedia Card / SD-Card Embedded Storage Hosts
The on-chip Multimedia Card Interface (MCI) on the AT91RM9200-CJ-002 directly drives SD/MMC cards without an external bridge IC, making it a good fit for data-logging appliances and embedded storage gateways. Combined with the integrated 10/100 Ethernet MAC and 200 MIPS throughput, the device can stream SD-card content to network clients in industrial metering or surveillance applications. The industrial temperature grade supports outdoor enclosures.
Recommended
Recommended Products Summary
Engineering reference data for AT91RM9200-CJ-002 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AT91RM9200-CJ | AT91RM9200-CI-002 | AT91RM9200-CU-002 | AT91RM9200-QI-002-T | AT91SAM9260B-CU |
|---|---|---|---|---|---|---|
| Package | 256-ball BGA (15x15 mm) | 256-ball BGA (15x15) - same | 256-ball BGA (15x15) - same | 256-ball BGA (15x15) - same | 256-ball BGA (15x15) - same | BGA-217 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | ARM920T | ARM920T | ARM920T | ARM920T | ARM920T | ARM926EJ-S |
| Maximum Clock Speed | 180 MHz | 180 MHz | 180 MHz | 180 MHz | 180 MHz | 200 MHz |
| Internal ROM | 128 KB | ROM-less | 128 KB | 128 KB | 128 KB | ROM-less |
| Internal SRAM | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB | 32 KB + 16 KB |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Supply Voltage | 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 | 1.8 V typical |
| Integrated Ethernet | 10/100 MAC + DMA | 10/100 MAC + DMA | 10/100 MAC + DMA | 10/100 MAC + DMA | 10/100 MAC + DMA | 10/100 MAC + DMA |
Key Differentiators
- Integrated 10/100 Ethernet MAC with full DMA (vs AT91SAM9260B-CU)
- Industrial temperature grade at 180 MHz (vs AT91RM9200-CI-002)
- Full Speed USB Host + Device in single chip (vs AT91SAM9260B-CU)
Design Notes
The 256-ball BGA (15x15 mm) package requires a 4-layer PCB minimum with a continuous ground plane directly beneath the part to provide controlled impedance for high-speed signal traces. Use 0.5 mm ball pitch with NSMD (non-solder-mask-defined) landing pads per IPC-7351 and via-in-pad design rules. Place 0.1 uF + 10 uF decoupling capacitors within 2 mm of each power pin pair, and route core supply first to inner layers with stitching vias tying top/bottom grounds every 5 mm along the BGA perimeter.
Estimated: at 180 MHz, Vcc=1.8 V, the ARM920T core typically draws 200-250 mA, dissipating approximately 0.4-0.45 W. The 256-ball BGA package has theta_JA of roughly 25-30 C/W on a 4-layer JEDEC JESD51 test board, giving a 10-15 C junction temperature rise above ambient - well within the -40 C to +85 C industrial rating. Ensure copper pours on inner layers tie directly to the center ground balls.
Do not confuse the AT91RM9200 family with the AT91SAM9 family - the former uses the older ARM920T core without external memory bus, the latter uses ARM926EJ-S with SDRAM controller. The AT91RM9200-CJ-002 has 128 KB on-chip ROM but limited external memory bus; designs requiring DDR/SD-RAM must migrate to AT91SAM9260 or SAM9 series. Verify JTAG pin mapping matches your debugger before PCB layout.
Route RMII/MII Ethernet signals on the top layer directly under the MAC ball array with 50 ohm controlled impedance to a 1:1 Ethernet transformer. Keep USB DP/DM traces as a 90 ohm differential pair with length matching within 150 mil and route over a continuous ground plane. Avoid routing Ethernet or USB traces across BGA break-out vias - use the inner layers for break-out and the top layer for the MAC/USB signal path.
Compliance Information
RoHS compliant per JLCPCB and distributor listings. AEC-Q100 not applicable - this is a microcontroller, not an automotive-qualified IC. Halogen-free status not explicitly stated in available data.
