AT91SAM7S64 datasheet(3/42 Pages) ATMEL

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6175BS–ATARM–04-Nov-05

AT91SAM7S Series Summary

Description

Atmel’s AT91SAM7S is a series of low pincount Flash microcontrollers based on the 32-bit ARM

RISC processor. It features a high-speed Flash and an SRAM, a large set of peripherals, includ-

ing a USB 2.0 device (except for the AT91SAM7S32), and a complete 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 performance and extended memory.

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

a parallel interface on a production programmer prior to mounting. Built-in lock bits and a secu-

rity bit protect the firmware from accidental overwrite and preserves its confidentiality.

The AT91SAM7S Series 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 brownout detector and a watchdog running off an integrated RC

oscillator.

The AT91SAM7S Series are general-purpose microcontrollers. Their integrated USB Device

port makes them ideal devices for peripheral applications requiring connectivity to a PC or cellu-

lar phone. Their aggressive price point and high level of integration pushes their scope of use far

into the cost-sensitive, high-volume consumer market.

Configuration Summary of the AT91SAM7S256, AT91SAM7S128,

AT91SAM7S64, AT91SAM7S321 and AT91SAM7S32

The AT91SAM7S256, AT91SAM7S128, AT91SAM7S64, AT91SAM7S321 and AT91SAM7S32

differ in memory size, peripheral set and package. Table 2-1 summarizes the configuration of

the five devices.

Except for the AT91SAM7S32, all other AT91SAM7S devices are package and pinout

compatible.

Notes:

1. Manchester Encoder/Decoder, Fractional Baud Rate.

2. Full modem line support on USART1.

Table 2-1.

Configuration Summary

Device

Flash

SRAM

USB

Device

Port

USART

External

Interrupt

Source

PDC

Channels

I/O Lines

Package

AT91SAM7S256

256K byte

64K byte

2(1) (2)

LQFP 64

AT91SAM7S128

128K byte

32K byte

2(1) (2)

LQFP 64

AT91SAM7S64

64K byte

16K byte

2(2)

LQFP 64

AT91SAM7S321

32K byte

8K byte

2(2)

LQFP 64

AT91SAM7S32

32K byte

8K byte

not

present

LQFP 48

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