AT91SAM7S256-AU-001 Atmel, AT91SAM7S256-AU-001 Datasheet - Page 3

• Manufacturer Part Number: AT91SAM7S256-AU-001
• Description: IC ARM7 MCU 32BIT 256K 64LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S256-AU-001

• Package / Case: 64-LQFP
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 55MHz
• Number Of I /o: 32
• Core Processor: ARM7
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Program Memory Size: 256KB (256K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Core Size: 16/32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: AT91SAM7S256AU001

1. Description
1.1
Table 1-1.
Notes:
6175FS–ATARM–03-Dec-07
Device
AT91SAM7S512 512 Kbytes Master
AT91SAM7S256 256 Kbytes Master
AT91SAM7S128 128 Kbytes Master
AT91SAM7S64 64 Kbytes
AT91SAM7S321 32 Kbytes
AT91SAM7S32 32 Kbytes
AT91SAM7S161 16 Kbytes
AT91SAM7S16 16 Kbytes
Configuration Summary of the AT91SAM7S512, AT91SAM7S256, AT91SAM7S128,
AT91SAM7S64, AT91SAM7S321, AT91SAM7S32, AT91SAM7S161 and AT91SAM7S16
1. Fractional Baud Rate.
2. Full modem line support on USART1.
3. Only two TC channels are accessible through the PIO.
Flash
Configuration Summary
TWI
Master
Master
Master
Master/
Slave
Master/
Slave
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 AT91SAM7S16), 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.
The AT91SAM7S512, AT91SAM7S256, AT91SAM7S128, AT91SAM7S64, AT91SAM7S321,
AT91SAM7S32, AT91SAM7S161 and AT91SAM7S16 differ in memory size, peripheral set and
package.
Except for the AT91SAM7S32/16, all other AT91SAM7S devices are package and pinout
compatible.
Flash
Organization SRAM
dual plane
single plane
single plane
single plane
single plane
single plane
single plane
single plane
Table 1-1
64 Kbytes 1
64 Kbytes 1
32 Kbytes 1
16 Kbytes 1
8 Kbytes
8 Kbytes
4 Kbytes
4 Kbytes
summarizes the configuration of the six devices.
USB
Device
Port
1
not
present
1
not
present
USART
2
2
2
2
2
1
2
1
(1) (2)
(1) (2)
(1) (2)
(2)
(2)
(2)
AT91SAM7S Series Summary
External
Interrupt
Source
2
2
2
2
2
1
2
1
PDC
Channels
11
11
11
11
11
9
11
9
TC
Channels
3
3
3
3
3
3
3
3
(3)
(3)
I/O 5V
Tolerant
Yes
Yes
Yes
Yes
Yes
Yes
No
No
I/O
Lines
32
32
32
32
32
21
32
21
Package
LQFP/
QFN 64
LQFP/
QFN 64
LQFP/
QFN 64
LQFP/
QFN 64
LQFP/
QFN 64
LQFP/
QFN 48
LQFP
LQFP/
QFN 48
3