AT89C5122D-RDRIM Atmel, AT89C5122D-RDRIM Datasheet - Page 99

• Manufacturer Part Number: AT89C5122D-RDRIM
• Description: IC MCU 80C51 W/SMART CARD 64VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C5122D-RDRIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: SmartCard, SPI, UART/USART, USB
• Peripherals: LED, POR, WDT
• Number Of I /o: 46
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-03 - KIT STARTER FOR MCU AT8XC5122/23
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: AT89C5122DRDRIMTR

AT83R5122, AT8xC5122/23
•
Endpoint FIFO reset
Before using an endpoint, its FIFO should be reset. This action resets the FIFO pointer
to its original value, resets the byte counter of the endpoint (UBYCTX register), and
resets the data toggle bit (DTGL bit in UEPCONX).
The reset of an endpoint FIFO is performed by setting to 1 and resetting to 0 the corre-
sponding bit in the UEPRST register.
For example, in order to reset the Endpoint number 2 FIFO, write 0000 0100b then 0000
0000b in the UEPRST register.
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