AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 770

• 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

20 Fast Flash Programming Interface (FFPI) .......................................... 123
21 SAM7 Boot Program ............................................................................ 143
22 Peripheral DMA Controller (PDC) ....................................................... 151
23 Advanced Interrupt Controller (AIC) ................................................... 161
24 Clock Generator ................................................................................... 187
25 Power Management Controller (PMC) ................................................ 191
19.2Functional Description .........................................................................................105
19.3Embedded Flash Controller (EFC) User Interface ...............................................114
20.1Overview ..............................................................................................................123
20.2Parallel Fast Flash Programming ........................................................................124
20.3Serial Fast Flash Programming ...........................................................................136
21.1Description ...........................................................................................................143
21.2Flow Diagram ......................................................................................................143
21.3Device Initialization with USB ..............................................................................144
21.4Device Initialization without USB .........................................................................144
21.5SAM-BA Boot ......................................................................................................145
21.6Hardware and Software Constraints ....................................................................150
22.1Overview ..............................................................................................................151
22.2Block Diagram .....................................................................................................151
22.3Functional Description .........................................................................................152
22.4Peripheral DMA Controller (PDC) User Interface ...............................................153
23.1Overview ..............................................................................................................161
23.2Block Diagram .....................................................................................................161
23.3Application Block Diagram ...................................................................................162
23.4AIC Detailed Block Diagram ................................................................................162
23.5I/O Line Description .............................................................................................162
23.6Product Dependencies ........................................................................................163
23.7Functional Description .........................................................................................164
23.8Advanced Interrupt Controller (AIC) User Interface .............................................175
24.1Overview ..............................................................................................................187
24.2Slow Clock RC Oscillator .....................................................................................187
24.3Main Oscillator .....................................................................................................187
24.4Divider and PLL Block .........................................................................................189
25.1Description ...........................................................................................................191
25.2Master Clock Controller .......................................................................................191
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
770