AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 594

• Manufacturer Part Number: AT91SAM9G45-CU-999
• Description: IC MCU ARM9 APMC 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

6438F–ATARM–21-Jun-10
In SPI Slave Mode:
• the external clock SCK must not be selected (USCLKS
• to obtain correct behavior of the receiver and the transmitter, the value programmed in CD of
• if the internal clock divided (MCK/DIV) is selected, the value programmed in CD must be
• the external clock (SCK) selection is forced regardless of the value of the USCLKS field in the
• to obtain correct behavior of the receiver and the transmitter, the external clock (SCK)
to “1” in the Mode Register (US_MR), in order to generate correctly the serial clock on the
SCK pin.
must be superior or equal to 4.
even to ensure a 50:50 mark/space ratio on the SCK pin, this value can be odd if the internal
clock is selected (MCK).
Mode Register (US_MR). Likewise, the value written in US_BRGR has no effect, because
the clock is provided directly by the signal on the USART SCK pin.
frequency must be at least 4 times lower than the system clock.
0x3), and the bit CLKO must be set
AT91SAM9G45
594