Atmel’s AT73C260 is an on-chip USB transceiver that is fully compatible with the USB standard. It is a bidirectional differential interface with three different interfaces: digital, USB2.0 section 7 with or without cable, and IC_USB1.0. The AT73C260 also includes a 3.5V power supply monitor, a low-power bandgap regulator, a 3.3V 70mA linear voltage regulator, and a 1.8V~3.0V 70mA linear voltage regulator SIM FTA. Mainly used in mobile USB UICC (ETSI 102 600), PC USB UICC and Token USB (password and password USB).
Figure 1 AT73C260 block diagram
Introduction to AT73C260
AT73C260 is an on-chip USB transceiver, which fully complies with the requirements of the Universal Serial Bus specification, specifically, it is compatible with IC_USB1.0. The AT73C260 is a bidirectional differential interface. The AT73C260 is ideal for mobile devices, PCs and Token USB using USB UICC.
The upstream port of the AT73C260 can be connected to 3 different interfaces: digital; USB2.0 section 7 with or without cable; IC_USB1.0.
The downstream port of AT73C260 meets the requirements of IC_USB1.0. Use 3 pins to select the mode of the AT73C260. The downstream port of the AT73C260 is compliant with USB2.0 section 7 when the PVCC is powered by 3.3V and pull-down resistors are added on the PDM and PDP.
Figure 2 AT73C260 application block diagram: PHY–6 line DAT_SE0 to IC_USB1.0
Figure 3 AT73C260 application block diagram: 4-wire DAT_SE0 to IC_USB1.0
The AT73C260 also includes a 3.5V power supply monitor, a low power bandgap regulator, a 3.3V 70mA linear voltage regulator, and a 1.8V~3.0V 70mA linear voltage regulator SIM FTA, which meets the requirements of Test 27.17.2.1.
The industrial temperature range of AT73C260 is -40℃~+85℃.
The AT73C260 is packaged in a QFN16 package with an area of 3 mm × 3 mm and a grid pitch of 0.5 mm.
AT73C260 main features
• Pin Programmable Mode
• Power supply voltage range: 1.55V~3.6V
• PHY IC_USB1.0 downstream port
• USB2.0 Section 7 to IC_USB1.0 Bridge
• IC_USB1.0 to USB2.0 Section 7 Bridge
• Voltage reference: 3.3V
• 2 70mA LDO voltage regulators
• Quiescent current on each supply is less than 5μA
• Slew rate control to minimize EMI
• ESD 4kV, compliant with USB UICC
Figure 4 Circuit diagram of AT73C260-EK1 evaluation board
AT73C260 application
– Mobile USB UICC (ETSI 102 600), PC USB UICC and Token USB (password password USB)
AT73C260-EK1 Evaluation Kit
The AT73C260-EK1 evaluation kit is designed to easily evaluate the functionality and various on-chip configuration modes of the AT73C260 on-chip USB transceiver.
AT73C260-EK1 Evaluation Kit Key Features
power supply:
On-board resources on the VBUS connector for implementing the host connection:
Type A USB connector
Type B USB connector
– 2 Type AB Micro USB connectors
– UICC interface connector
– Smart Card Reader Connector
– Jumpers on the connector board for FPGA interconnect:
– M<2:0> pad jumpers to configure on-chip connection mode
– PVRE configuration jumper
– Jumpers for pull-up and pull-down resistors on PDP and PDM
– UICC connector configuration jumper
– Load connection jumper on power supply
For more details, please visit:
http://solution.eccn.com/solution_20101101111165471.htm
The Links: LT104V3-102 LT121S1-153
