Microchip Technology AT91SAM9M10C-CU

Overview

AT91SAM9M10C-CU from Microchip Technology (formerly Atmel) is a 400 MHz ARM926EJ-S-based multimedia-optimized embedded MPU with integrated video decoder (H.264/MPEG-4/MPEG-2/VC-1/H.263), LCD controller supporting up to 1280×860, 10/100 Ethernet MAC, dual high-speed USB (host/device), and 8-channel 10-bit touchscreen ADC. It targets media-rich human-machine interfaces in POS terminals, medical displays, and home automation panels.

For engineers reviewing the AT91SAM9M10C-CU datasheet, AT91SAM9M10C-CU pinout, AT91SAM9M10C-CU application, or AT91SAM9M10C-CU equivalent, key selection considerations include DDR2/LPDDR memory interface support, 324-ball TFBGA package with 0.8 mm pitch, 3.3 V/1.8 V I/O voltage flexibility, hardware-accelerated video decode at D1/WVGA resolution, and triple low-power modes (Idle/Ultra Low-power/Backup).

Technical Context

The AT91SAM9M10C-CU integrates a 400 MHz ARM926EJ-S core with 32 KB instruction and 32 KB data caches plus MMU, backed by a 133 MHz multi-layer AHB bus matrix and 37 DMA channels. Its system architecture includes two PLLs-one for general system clocking and a dedicated 480 MHz PLL optimized for USB High-Speed operation.

Peripherals are distributed across multiple clock domains: the video decoder (VDEC) and LCD controller operate on independent pixel clocks; the ISI image sensor interface supports ITU-R BT.601/656; and the EMAC supports both MII and RMII PHY interfaces. Power management includes clock gating, battery-backed RTC/RTT/GPBR, and three software-selectable low-power states with distinct peripheral retention profiles.

Key Specifications

Pinout & Package

The AT91SAM9M10C-CU is housed in a 324-ball TFBGA package (15 × 15 × 1.2 mm, 0.8 mm pitch) with I/Os configurable for 1.8 V or 3.3 V operation-eliminating external level shifters. Power domains include VDDCORE (0.9–1.1 V), VDDIOM0/1 (1.65–1.95 V or 3.0–3.6 V), VDDIOP0–2 (1.65–3.6 V), and VDDBU (1.8–3.6 V).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATSAMA5D36-CU and i.MX283, the AT91SAM9M10C-CU uniquely delivers hardware-accelerated multi-standard video decode in a cost-optimized ARM9 platform-making it optimal for media-rich displays where CPU offload and power efficiency are prioritized over raw compute throughput or advanced GPU features.

Availability

AT91SAM9M10C-CU is available at Aetrix Electronics and suitable for POS terminals, medical patient monitors, and home automation control panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AT91SAM9M10C-CU 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 the SMART ARM portfolio, emphasizing reliability, longevity, and industrial-grade qualification for embedded microprocessors.

The AT91SAM9M10C-CU belongs to the SMART SAM9 family designed specifically for cost-sensitive, multimedia-capable human-machine interfaces-balancing performance, peripheral integration, and power efficiency for display-centric edge devices.

FAQ

What is the maximum supported resolution for the LCD Controller in AT91SAM9M10C-CU?

The AT91SAM9M10C-CU LCD Controller supports TFT and STN displays up to 1280×860 pixels. This capability is enabled by its programmable pixel clock, dual-panel support, and integrated timing generator-allowing direct drive of high-resolution industrial panels without external timing logic. The LCDC operates independently of the CPU clock, ensuring stable video output during intensive processing tasks.

Does AT91SAM9M10C-CU support booting directly from NAND Flash?

Yes, the AT91SAM9M10C-CU supports NAND Flash boot with built-in hardware ECC correction (up to 4-bit per 512-byte sector). The NAND Flash Controller handles address mapping, bad-block management, and error detection during ROM bootloader execution-enabling reliable field-upgradable firmware storage without external ECC co-processors.

What are the power supply requirements for VDDCORE and VDDIOM0 on AT91SAM9M10C-CU?

AT91SAM9M10C-CU requires VDDCORE at 0.9–1.1 V (typ. 1.0 V) and VDDIOM0 at 1.65–1.95 V (typ. 1.8 V) for DDR2/LPDDR I/O lines. These supplies must meet strict sequencing: VDDIOM0 must reach VOH within 418 µs after VDDCORE crosses VT+, and both must be stable before releasing the internal POR. GNDCORE and GNDIOM are separate ground planes.

Can AT91SAM9M10C-CU simultaneously operate USB Host and USB Device functions?

Yes, the AT91SAM9M10C-CU integrates two independent USB 2.0 High-Speed controllers: one UHPHS (dual-port host) and one UDPHS (device). They share no physical transceiver resources-enabling concurrent host enumeration (e.g., USB keyboard/mouse) and device mode (e.g., CDC ACM serial emulation) without arbitration or mode switching delays.

How does the AT91SAM9M10C-CU handle touchscreen input acquisition?

The AT91SAM9M10C-CU integrates an 8-channel 10-bit ADC (TSADCC) with dedicated analog inputs (AD0XP/AD1XM/AD2YP/AD3YM) for 4-wire resistive touchscreen measurement. It supports automatic X/Y coordinate scanning, pen-down detection, and programmable sampling rates-delivering sub-2 ms conversion latency and eliminating need for external touchscreen controllers.