AT89C5122D-PSTUM Atmel, AT89C5122D-PSTUM Datasheet - Page 95

• Manufacturer Part Number: AT89C5122D-PSTUM
• Description: IC 8051 MCU FLASH 32K 64QFN
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C5122D-PSTUM

• 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-QFN
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-03 - KIT STARTER FOR MCU AT8XC5122/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

Function Interface Unit (UFI)
4202F–SCR–07/2008
DPLL
SIE
Figure 49. SIE Block Diagram
The Function Interface Unit provides the interface between the AT8xC5122D (or
AT83C5123) and the SIE. It manages transactions at the packet level with minimal inter-
vention from the device firmware, which reads and writes the endpoint FIFOs.
Figure 50. UFI Block Diagram
D+
D-
UFI
DPR Control
USB side
Transfer
Control
FSM
End of Packet
Detection
Start of Packet
Detection
Clk48
(48 MHz)
Clock
Recovery
Asynchronous Information
Transfer
User DPRAM
USB Pattern Generator
Parallel to Serial Converter
Bit Stuffing
NRZI Converter
CRC16 Generator
NRZI ‘ NRZ
Bit Unstuffing
Packet bit counter
AT83R5122, AT8xC5122/23
Endpoint 6
Endpoint 5
Endpoint 4
Endpoint 3
Endpoint 2
Endpoint 1
Endpoint 0
SysClk
(12 MHz)
CSREG 0 to 7
DPR Control
mP side
Registers
Bank
8
SYNC detection
CRC5 & CRC16
Generation/Check
Address Decoder
Serial t o Parallel
Conversion
PID decoder
DataIn [7:0]
C51
Microcontroller
Interface
Up to 48 MHz
UC_SYSCLK
DataOut
8
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