AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 150

• 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

21.6
Hardware and Software Constraints
Table 21-4.
Table 21-5.
Device
SAM7S512
SAM7S256
SAM7S128
SAM7S64
SAM7S321
SAM7S32
SAM7S161
SAM7S16
Peripheral
DBGU
DBGU
• SAM-BA boot copies itself in the SRAM and uses a block of internal SRAM for variables and stacks. The
• USB requirements: (Does not pertain to SAM7S32/16)
remaining available sizes for the user codes are as follows: 57344 bytes for SAM7S512, 57344 bytes for
SAM7S256, 24576 bytes for SAM7S128, 8192 bytes for SAM7S64, 2048 bytes for SAM7S321 and SAM7S32,
3840 bytes for SAM7S161 and SAM7S16.
– 18.432 MHz Quartz
– PIOA16 dedicated to the USB Pull-up
User Area Addresses
Pins Driven during Boot Program Execution
Start Address
0x202000
0x202000
0x202000
0x202000
0x202000
0x201400
0x200000
0x200000
Pin
DRXD
DTXD
End Address
0x210000
0x210000
0x208000
0x204000
0x210000
0x201C00
0200F00
0200F00
3840
3840
Size (bytes)
57344
57344
24576
8192
2048
2048
PIO Line
PA10
SAM7S Series [DATASHEET]
PA9
6175M–ATARM–26-Oct-12
150