Microchip Technology AT91SAM9263B-CU-999

Overview

AT91SAM9263B-CU-999 from Microchip Technology (formerly Atmel) is a 32-bit ARM926EJ-S-based microprocessor unit with dual external bus interfaces (EBI0/EBI1), integrated LCD controller, 2D graphics accelerator, image sensor interface, USB 2.0 host/device ports, 10/100 Ethernet MAC, and CAN 2.0A/B controller. It delivers 220 MIPS at 200 MHz and targets embedded navigation, industrial HMI, and multimedia edge devices.

For engineers reviewing the AT91SAM9263B-CU-999 datasheet, AT91SAM9263B-CU-999 pinout, AT91SAM9263B-CU-999 application, or AT91SAM9263B-CU-999 equivalent, key selection criteria include dual SDRAM/NAND Flash support, 160 GPIOs with peripheral multiplexing, 1.08–1.32 V core supply, and TFBGA-324 package compatibility with industrial temperature range operation.

Technical Context

The AT91SAM9263B-CU-999 implements a 9-layer bus matrix architecture enabling concurrent access by nine masters-including ARM926 instruction/data units, DMA, USB, Ethernet, and LCD controllers-to eight dedicated slaves such as internal ROM/SRAM, EBI0/EBI1, and peripheral bridge. This eliminates memory bottlenecks in high-throughput multimedia and real-time control systems.

Its system-level integration includes a full-featured system controller with dual real-time timers, watchdog, periodic interval timer, battery-backed registers, and programmable power management supporting slow-clock modes and voltage-domain isolation for VDDCORE, VDDIOM0/1, VDDIOP0/1, VDDBU, VDDPLL, and VDDOSC-enabling precise power optimization across subsystems.

Key Specifications

Pinout & Package

AT91SAM9263B-CU-999 is housed in a 324-ball TFBGA package (15 × 15 mm, 0.8 mm pitch) with defined power domain segregation (VDDCORE, VDDIOM0/1, VDDIOP0/1, VDDBU, VDDPLL, VDDOSC) and dedicated ground pins (GND, GNDBU, GNDPLL).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ARM9-based MPU applications.

Compared with SAMA5D36-CU and i.MX287CVM4B, AT91SAM9263B-CU-999 uniquely combines dual EBI, ISI, LCD controller, and CAN in a single ARM926EJ-S die - making it optimal for cost-constrained, camera- and display-rich embedded systems where legacy peripheral compatibility matters.

Availability

AT91SAM9263B-CU-999 is available at Aetrix Electronics and suitable for automotive navigation systems, industrial HMIs, medical imaging edge devices, and smart surveillance camera platforms requiring stable component supply and long-term industrial lifecycle support.

Supply support for AT91SAM9263B-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 AT91SAM legacy MPU portfolio, providing long-term documentation, errata, and qualified second-source manufacturing.

The AT91SAM9263 product line was designed for high-integration embedded applications demanding display, imaging, connectivity, and real-time control - bridging the gap between microcontrollers and application processors in cost-sensitive industrial and automotive segments.

FAQ

What is the maximum operating frequency of the AT91SAM9263B-CU-999?

The AT91SAM9263B-CU-999 operates at a maximum frequency of 200 MHz, delivering 220 MIPS performance. This speed is achievable under specified conditions: VDDCORE = 1.2 V, ambient temperature ≤ 85°C, and proper decoupling. The internal PLLs support clock generation up to 240 MHz, but the core is rated for 200 MHz operation per the official datasheet summary.

Does the AT91SAM9263B-CU-999 support NAND Flash with ECC?

Yes, the AT91SAM9263B-CU-999 supports ECC-enabled NAND Flash through both EBI0 and EBI1 interfaces. Each EBI includes dedicated NAND control signals (NANDOE, NANDWE, NANDCLE, NANDALE) and hardware ECC logic within the SMC (Static Memory Controller), enabling single-bit error correction and detection for reliable boot and data storage.

What is the purpose of the VDDIOM0 and VDDIOM1 power supplies on the AT91SAM9263B-CU-999?

VDDIOM0 and VDDIOM1 power the I/O lines of EBI0 and EBI1 respectively, and accept dual voltage ranges: 1.65–1.95 V (1.8 V nominal) or 3.0–3.6 V (3.3 V nominal). This allows interface flexibility with low-voltage memories (e.g., 1.8 V SDRAM) while maintaining timing integrity - configured via Chip Configuration registers after reset.

Can the AT91SAM9263B-CU-999 directly drive an RGB TFT display?

Yes, the AT91SAM9263B-CU-999 LCD controller supports passive and active displays including RGB TFT panels up to 24 bits per pixel and 2048×2048 resolution. It provides dedicated outputs (LCDD0–LCDD23, LCDHSYNC, LCDVSYNC, LCDDOTCK, LCDDEN) and supports virtual screen buffers - enabling direct connection to standard TFT modules without external timing controllers.

How many programmable I/O lines does the AT91SAM9263B-CU-999 provide?

The AT91SAM9263B-CU-999 provides 160 programmable I/O lines across five 32-bit PIO controllers (PIOA–PIOE). Each line supports peripheral function multiplexing, programmable pull-up resistors, open-drain capability, and input change interrupt - with reset state defaults documented per pin in the PIO multiplexing tables.