AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 336

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

• CHRL: Character Length.
• SYNC: Synchronous Mode Select
0: USART operates in Asynchronous Mode.
1: USART operates in Synchronous Mode.
• PAR: Parity Type
• NBSTOP: Number of Stop Bits
• CHMODE: Channel Mode
• MSBF: Bit Order
0: Least Significant Bit is sent/received first.
1: Most Significant Bit is sent/received first.
336
0
0
1
1
0
0
1
1
0
0
0
0
1
1
CHMODE
0
0
1
1
NBSTOP
AT91SAM7X512/256/128 Preliminary
CHRL
PAR
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Asynchronous (SYNC = 0)
1 stop bit
1.5 stop bits
2 stop bits
Reserved
Mode Description
Normal Mode
Automatic Echo. Receiver input is connected to the TXD pin.
Local Loopback. Transmitter output is connected to the Receiver Input..
Remote Loopback. RXD pin is internally connected to the TXD pin.
0
1
0
1
x
x
Character Length
5 bits
6 bits
7 bits
8 bits
Parity Type
Even parity
Odd parity
Parity forced to 0 (Space)
Parity forced to 1 (Mark)
No parity
Multidrop mode
Synchronous (SYNC = 1)
1 stop bit
Reserved
2 stop bits
Reserved
6120H–ATARM–17-Feb-09