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AT91SAM7S128 Summary Preliminary

6116AS–ATARM–20-Oct-04

– Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel

– Double PWM Generation, Capture/Waveform Mode, Up/Down Capability

– Master Mode Support Only, All Two-wire Atmel EEPROMs Supported

– Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components

– 3.3V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply

– 1.8V VDDCORE Core Power Supply with Brown-out Detector

°C Worst Case Conditions

Description

Atmel’s AT91SAM7S128 is a member of a series of low pincount Flash microcontrollers

based on the 32-bit ARM RISC processor. It features a 128 Kbyte high-speed Flash and

a 32 Kbyte SRAM, a large set of peripherals, including a USB 2.0 device, and a com-

plete set of system functions minimizing the number of external components. The

device is an ideal migration path for 8-bit microcontroller users looking for additional per-

formance and extended memory.

The embedded Flash memory can be programmed in-system via the JTAG-ICE inter-

face or via a parallel interface on a production programmer prior to mounting. Built-in

lock bits and a security bit protect the firmware from accidental overwrite and preserves

its confidentiality.

The AT91SAM7S128 system controller includes a reset controller capable of managing

the power-on sequence of the microcontroller and the complete system. Correct device

operation can be monitored by a built-in brown-out detector and a watchdog running off

an integrated RC oscillator.

The AT91SAM7S128 is a general-purpose microcontroller. Its integrated USB Device

port makes it an ideal device for peripheral applications requiring connectivity to a PC or

cellular phone. Its aggressive price point and high level of integration pushes its scope

of use far into the cost-sensitive, high-volume consumer market.