AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 145

• 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

21.5
SAM-BA Boot
The SAM-BA boot principle is to:
Figure 21-3. Auto Baudrate Flow Diagram
– Check if USB Device enumeration has occurred
– Check if the Auto Baudrate sequence has succeeded (see
Send Character '>'
Run SAM-BA Boot
Character '0x80'
Character '0x80'
Character '#'
Yes
Yes
Yes
received ?
received ?
received ?
Device
Setup
No
No
No
Figure
Test Communication
1st measurement
2nd measurement
UART operational
21-3)
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
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