AT91SAM7SE256B-CUR Atmel, AT91SAM7SE256B-CUR Datasheet - Page 670

• Manufacturer Part Number: AT91SAM7SE256B-CUR
• Description: IC ARM7 MCU FLASH 256K 128-LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE256B-CUR

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: EBI/EMI, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 88
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Processor Series: SAM7SE256
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: SPI, USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 88
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: AT91SAM7SE256B
• Supply Current (max): 60 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

30 Debug Unit (DBGU) .............................................................................. 299
31 Serial Peripheral Interface (SPI) .......................................................... 323
32 Two Wire Interface (TWI) ..................................................................... 349
33 Universal Synchronous Asynchronous Receiver Transceiver
34 Parallel Input Output Controller (PIO) ................................................ 437
vi
(USART) ................................................................................................ 389
30.1 Overview ............................................................................................................299
30.2 Block Diagram ...................................................................................................300
30.3 Product Dependencies ......................................................................................301
30.4 UART Operations ..............................................................................................301
30.5 Debug Unit User Interface ................................................................................308
31.1 Overview ............................................................................................................323
31.2 Block Diagram ...................................................................................................324
31.3 Application Block Diagram .................................................................................324
31.4 Signal Description .............................................................................................325
31.5 Product Dependencies ......................................................................................325
31.6 Functional Description .......................................................................................326
31.7 Serial Peripheral Interface (SPI) User Interface ................................................335
32.1 Overview ............................................................................................................349
32.2 List of Abbreviations ..........................................................................................349
32.3 Block Diagram ...................................................................................................350
32.4 Application Block Diagram .................................................................................350
32.5 Product Dependencies ......................................................................................351
32.6 Functional Description .......................................................................................352
32.7 Master Mode ......................................................................................................353
32.8 Multi-master Mode .............................................................................................364
32.9 Slave Mode ........................................................................................................367
32.10 Two-wire Interface (TWI) User Interface .........................................................375
33.1 Overview ............................................................................................................389
33.2 Block Diagram ...................................................................................................390
33.3 Application Block Diagram .................................................................................391
33.4 I/O Lines Description ........................................................................................391
33.5 Product Dependencies ......................................................................................392
33.6 Functional Description .......................................................................................393
33.7 USART User Interface ......................................................................................418
SAM7SE512/256/32 Preliminary
6222F–ATARM–14-Jan-11