Microchip Technology AT91SAM9M10C-CU-999

Overview

AT91SAM9M10C-CU-999 from Microchip Technology (formerly Atmel) is a 400 MHz ARM926EJ-S-based embedded MPU with integrated hardware video decoder (H.264/MPEG-4/MPEG-2/VC-1/H.263), LCD controller (up to 1280×860), 10/100 Ethernet MAC, dual high-speed USB (host + device), and DDR2/NAND Flash interfaces. It targets media-rich human-machine interfaces in POS terminals, medical displays, and building automation panels.

For engineers reviewing the AT91SAM9M10C-CU-999 datasheet, AT91SAM9M10C-CU-999 pinout, AT91SAM9M10C-CU-999 application, or AT91SAM9M10C-CU-999 equivalent, key selection criteria include its 324-ball TFBGA package, 1.8 V DDR2 I/O voltage, 64 KB tightly coupled SRAM, multi-format video decode acceleration, and dual USB host/device support with UTMI+ PHY integration.

Technical Context

The AT91SAM9M10C-CU-999 implements a 12-layer AHB bus matrix with 37 DMA channels and supports configurable DDR port allocation-dedicating DDR Port 0 to video decoder and DDR Port 1 to LCD controller when VDEC_SEL=1. Its ARM926EJ-S core includes 32 KB instruction and 32 KB data caches with MMU, enabling Linux and real-time OS execution.

Power management integrates clock gating, dual PLLs (system + 480 MHz USB-optimized), and independent I/O voltage domains (VDDIOM0/VDDIOM1/VDDIOPx) eliminating external level shifters. The 8-channel 10-bit ADC with 4-wire resistive touchscreen interface and ISI image sensor interface (ITU-R BT.601/656) enable direct display and camera subsystem integration.

Key Specifications

Pinout & Package

The AT91SAM9M10C-CU-999 is housed in a 324-ball Thin Fine-Pitch Ball Grid Array (TFBGA) package with 0.8 mm ball pitch and 16 mm × 16 mm body size. This low-cost PCB-compatible package supports high-density routing for multimedia applications requiring DDR2, USB, and LCD signal integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded MPU applications.

Compared with AT91SAM9M10C-CU-999, AT91SAM9G25-CU removes video acceleration but retains identical package and memory architecture for drop-in replacement in non-multimedia roles, while i.MX233 offers higher clock speed and integrated power management at the cost of incompatible pinout and reduced video feature depth.

Availability

AT91SAM9M10C-CU-999 is available at Aetrix Electronics and suitable for POS terminals, medical diagnostic panels, and smart building control systems requiring stable component supply, long lifecycle support, and validated Linux BSP compatibility.

Supply support for AT91SAM9M10C-CU-999 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology acquired Atmel in 2016 and maintains full support for the SAM9 family of ARM9-based MPUs, emphasizing industrial longevity, security, and Linux ecosystem readiness.

The AT91SAM9M10C-CU-999 belongs to Microchip's SAM9M series, designed specifically for cost-sensitive, media-rich human-machine interfaces requiring hardware video decode, high-resolution display control, and robust connectivity in commercial and medical environments.

FAQ

What is the maximum resolution supported by the LCD controller in the AT91SAM9M10C-CU-999?

The AT91SAM9M10C-CU-999 LCD controller supports TFT and STN displays up to 1280×860 pixels. This resolution is achieved using the integrated LCDC peripheral with programmable dot clock and synchronization signals (LCDHSYNC, LCDVSYNC, LCDDEN). The controller operates independently of the CPU, allowing concurrent video decode and UI rendering without frame buffer contention.

Does the AT91SAM9M10C-CU-999 include an integrated USB PHY?

Yes, the AT91SAM9M10C-CU-999 integrates two UTMI+ compliant USB PHYs: one dedicated to USB Host Port A and a second shared between USB Host Port B and the USB Device High Speed port. The UDPHS_CTRL register controls multiplexing, enabling either host B or device mode-but not both simultaneously-on the shared UTMI interface.

What power supply voltages are required for the AT91SAM9M10C-CU-999 DDR2 interface?

The AT91SAM9M10C-CU-999 DDR2 interface requires VDDIOM0 at 1.65–1.95 V (1.8 V typical) for DDR2/LPDDR I/O lines, with corresponding GNDIOM ground. This domain is electrically isolated from VDDIOM1 (EBI I/O) and VDDCORE (0.9–1.1 V), necessitating separate voltage regulation and decoupling per supply rail.

Can the AT91SAM9M10C-CU-999 boot from NAND Flash with hardware ECC?

Yes, the AT91SAM9M10C-CU-999 includes a NAND Flash controller with on-the-fly hardware ECC generation and correction (typically 1-bit per 512 bytes). Boot is supported directly from SLC NAND Flash connected to EBI_NCS5, with initial bootloader execution from internal ROM or external memory based on BMS pin configuration at reset.

How many independent I/O voltage domains does the AT91SAM9M10C-CU-999 support?

The AT91SAM9M10C-CU-999 supports five independent I/O voltage domains: VDDIOM0 (DDR2/LPDDR), VDDIOM1 (EBI), VDDIOP0/VDDIOP1/VDDIOP2 (peripheral I/Os), VDDBU (backup), and VDDANA (analog ADC). Each domain has dedicated power and ground pins, enabling mixed-voltage system design without external level shifters.