AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 771

• 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

26 Debug Unit (DBGU) .............................................................................. 215
27 Parallel Input/Output Controller (PIO) ................................................ 239
28 Serial Peripheral Interface (SPI) .......................................................... 269
29 Two-wire Interface (TWI) SAM7S512/256/128/64/321/32 .................... 295
25.3Processor Clock Controller ..................................................................................191
25.4USB Clock Controller ...........................................................................................192
25.5Peripheral Clock Controller ..................................................................................192
25.6Programmable Clock Output Controller ...............................................................192
25.7Programming Sequence ......................................................................................193
25.8Clock Switching Details .......................................................................................197
25.9Power Management Controller (PMC) User Interface ........................................200
26.1Overview ..............................................................................................................215
26.2Block Diagram .....................................................................................................216
26.3Product Dependencies ........................................................................................217
26.4UART Operations ................................................................................................217
26.5Debug Unit (DBGU) User Interface ....................................................................224
27.1Overview ..............................................................................................................239
27.2Block Diagram .....................................................................................................240
27.3Product Dependencies ........................................................................................241
27.4Functional Description .........................................................................................242
27.5I/O Lines Programming Example .........................................................................246
27.6Programmable Multibit ECC Error Location (PIO) User Interface .......................248
28.1Overview ..............................................................................................................269
28.2Block Diagram .....................................................................................................269
28.3Application Block Diagram ...................................................................................270
28.4Signal Description ...............................................................................................270
28.5Product Dependencies ........................................................................................270
28.6Functional Description .........................................................................................272
28.7Serial Peripheral Interface (SPI) User Interface User Interface ...........................281
29.1Overview ..............................................................................................................295
29.2List of Abbreviations ............................................................................................295
29.3Block Diagram .....................................................................................................296
29.4Application Block Diagram ...................................................................................296
29.5Product Dependencies ........................................................................................296
29.6Functional Description .........................................................................................297
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
771