AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 767

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

Table of Contents
1
2
3
4
5
6
7
8
Features ..................................................................................................... 1
Description ................................................................................................ 3
Block Diagram .......................................................................................... 4
Signal Description .................................................................................... 6
Package and Pinout ................................................................................. 9
Power Considerations ........................................................................... 12
I/O Lines Considerations ....................................................................... 14
Processor and Architecture .................................................................. 16
Memories ................................................................................................. 18
1.1Configuration Summary of the SAM7S512, SAM7S256, SAM7S128, SAM7S64, SAM7S321, SAM7S32,
4.164-lead LQFP and 64-pad QFN Package Outlines ...................................................9
4.264-lead LQFP and 64-pad QFN Pinout ...................................................................10
4.348-lead LQFP and 48-pad QFN Package Outlines .................................................11
4.448-lead LQFP and 48-pad QFN Pinout ...................................................................11
5.1Power Supplies ........................................................................................................12
5.2Power Consumption ................................................................................................12
5.3Voltage Regulator ....................................................................................................12
5.4Typical Powering Schematics ..................................................................................12
6.1JTAG Port Pins ........................................................................................................14
6.2Test Pin ...................................................................................................................14
6.3Reset Pin .................................................................................................................14
6.4ERASE Pin ..............................................................................................................14
6.5PIO Controller A Lines .............................................................................................14
6.6I/O Line Drive Levels ...............................................................................................14
7.1ARM7TDMI Processor .............................................................................................16
7.2Debug and Test Features ........................................................................................16
7.3Memory Controller ...................................................................................................16
7.4Peripheral DMA Controller .......................................................................................17
8.1SAM7S512 ..............................................................................................................18
8.2SAM7S256 ..............................................................................................................18
8.3SAM7S128 ..............................................................................................................18
8.4SAM7S64 ................................................................................................................18
SAM7S161 and SAM7S16 3
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
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