AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 682

• Manufacturer Part Number: AT91RM9200-CI-002
• Description: IC ARM9 MCU 256 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-CI-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

41.13.6
41.13.7
41.14 USART
41.14.1
41.14.2
41.14.3
41.14.4
41.14.5
682
AT91RM9200
TXCOMP and TXRDY reset
Data lost on high latency
RTS0 not connected
US_IF must be initialized
TXD signal is floating in Modem and Hardware Handshaking modes
DCD is active High instead of Low
Bad value in Number of Errors Register
Problem Fix/Workaround
None.
TXCOMP and TXRDY are not reset by MSDIS.
Problem Fix/Workaround
None.
In case of high latency to process the RXRDY interrupt, with RXRDY set, if the receive data reg-
ister is read at the same time as new data is captured into the register, the RXRDY flag is
cleared and the new data is lost because the associated RXRDY is not set.
Problem Fix/Workaround
None.
Internally, the RTS0 signal of the USART0 is not connected to PA21.
Problem Fix/Workaround
The RTS0 signal of the USART0 is connected to the PIO Controller D. The PIOD can be used to
control the RTS0 signal. The PIOD is only available in the AT91RM9200 BGA package.
US_IF must be initialized even in transmission mode.
Problem Fix/Workaround
None.
The TXD signal should be pulled up in Modem and Hardware Handshaking modes.
Problem Fix/Workaround
TXD is multiplexed with PIO which integrates a pull-up resistor.
This internal pull-up needs to be enabled.
The DCD signal is active at 'High' level into the USART block (Modem mode).
DCD should be active at 'Low' level.
Problem Fix/Workaround
Add an inverter.
The Number of Errors Register always returns 0 instead of the ISO7816 error number.
1768I–ATARM–09-Jul-09