JTAG Debugger	$895
Tool Features:    Run Control (Run, Stop, Breakpoints, Single Stepping) Memory Read/Write access)    RTOS Support    Flash support for the Atmel EB40A    Support for Special Function Registers (SFRs)

The members of the AT91X408XX share peripherals but offers different on-board memory and CPU speed.

Chip Feature overview:

• External Bus Interface
• 3-channel Timer/Counter
• 2 USARTs
• Watchdog Timer
• Advanced power-saving features

On-chip memory and CPU speed:

• AT91F40816 – 8KB SRAM, 2MB Flash, max CPU clock: 40MHz
• AT91FR40161 – 136KB SRAM, 2MB Flash, max CPU clock: 33MHz
• AT91FR40162 – 256KB SRAM, 2MB Flash, max CPU clock: 70MHz
• AT91FR4042 – 256KB SRAM, 512KB Flash, max CPU clock: 75MHz
• AT91M40800 – 8KB SRAM, max CPU clock: 40MHz
• AT91R40008 – 256KB SRAM, max CPU clock: 75MHz
• AT91R40807 – 136KB SRAM, max CPU clock: 33MHz

Evaluation boards and support packages:

• Nohau offers the Atmel EB40A evaluation board for the AT91X408XX series.
• EMUL-ARM includes board support packages for EB40 and EB40A, including µC/OS-II
• The Atmel AT91 software library for EB40 and EB55 is adapted for the HITECH ARM-C compiler and comes with EMUL-ARM