AT91SAM9X35-CU

Embedded Microprocessor Unit (MPU)

The AT91SAM9X35-CU is a embedded microprocessor unit (mpu) from Atmel | SMART. View the full AT91SAM9X35-CU datasheet below including key specifications.

Official AT91SAM9X35-CU datasheet (PDF) — the source this page was extracted from.

Manufacturer

Atmel | SMART

AT91SAM9X35-CU Key Specifications

Parameter	Value
Internal ROM	64 KB
Internal SRAM	32 KB
USB Interfaces
Core Architecture	ARM926EJ-S™
Max Core Frequency	400 MHz
Core Supply Voltage	1.0V +/- 10%
Internal Data Cache	16 KB
System Bus Frequency	up to 133 MHz
External Memory Support	DDR2/LPDDR, SDR/LPSDR, Static Memories, MLC/SLC NAND Flash (up to 24-bit ECC)
Internal Instruction Cache	16 KB

AT91SAM9X35-CU Overview

Part: AT91SAM9X35 (SAM9X35) — Atmel

Type: ARM926EJ-S Embedded Microprocessor (MPU)

Description: 400 MHz ARM926EJ-S embedded MPU with 16 KB I-cache and 16 KB D-cache, LCD controller, 10/100 Ethernet MAC, dual CAN, HS USB and DDR2/LPDDR external bus interface, in a 217-ball BGA package.

Operating Conditions:

Core: ARM926EJ-S at up to 400 MHz @ 1.0 V ±10%
System clock: up to 133 MHz
I/O supply ranges by pad type: GPIO 1.65–3.6 V; EBI 1.65–1.95 V or 3.0–3.6 V; GPIO_ANA, USB, RSTJTAG and DIB pads 3.0–3.6 V

Key Specs:

CPU: ARM926EJ-S, up to 400 MHz, with MMU
Memory: 64 KB ROM, 32 KB SRAM, 16 KB I-cache and 16 KB D-cache
External bus: 32-bit EBI supporting DDR2/LPDDR (4- and 8-bank), SDR/LPSDR and static memories, up to 133 MHz
NAND controller: MLC/SLC 8-bit with PMECC up to 24-bit
I/O: 105 programmable I/O lines
ADC: 12-channel 10-bit touchscreen ADC
Connectivity: 10/100 Mbps Ethernet MAC, two CAN 2.0A/B, USB HS Device, USB HS Host, USB FS Host
PLLs: one system PLL and one 480 MHz PLL for USB HS

Features:

LCD controller with 4-layer overlay, alpha-blending, rotation, scaling and color conversion
Two dual-port 8-channel DMA controllers and a bus matrix
Two high-speed memory card hosts (SDCard/SDIO/MMC)
Three USARTs, two UARTs, DBGU, two SPIs, three TWIs, SSC and a 4-channel 16-bit PWM
Two 3-channel 32-bit timer/counters
Software modem device (Conexant SmartDAA)
Shutdown controller with four 32-bit battery backup registers
Internal 32 kHz and 12 MHz RC oscillators
Selectable 32768 Hz and 12 MHz crystal oscillators
Boot ROM supporting NAND Flash, SDCard and DataFlash
Write-protected registers

Applications:

Industrial applications requiring refined user interfaces and high-speed communication

Package:

217-ball BGA, 0.8 mm pitch

AT91SAM9X35-CU Features

Core

ARM926EJ-S™ ARM ® Thumb ® Processor running at up to 400 MHz @ 1.0V +/- 10%

16 Kbytes Data Cache, 16 Kbytes Instruction Cache, Memory Management Unit

AT91SAM9X35-CU Pin Configuration

Table 9-1. Debug and Test Pin List

Pin Name	Function	Type	Active Level
Reset/Test	Reset/Test	Reset/Test	Reset/Test
NRST	Microcontroller Reset	Input/Output	Low
TST	Test Mode Select	Input	High
ICE and JTAG	ICE and JTAG	ICE and JTAG	ICE and JTAG
NTRST	Test Reset Signal	Input	Low
TCK	Test Clock	Input
TDI	Test Data In	Input
TDO	Test Data Out	Output
TMS	Test Mode Select	Input
RTCK	Returned Test Clock	Output
JTAGSEL	JTAG Selection	Input
Debug Unit	Debug Unit	Debug Unit	Debug Unit
DRXD	Debug Receive Data	Input
DTXD	Debug Transmit Data	Output

Table 9-1. Debug and Test Pin List

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part Number	Manufacturer	Package
SAM9X35	Atmel \| SMART	BGA-217

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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