FT245R 데이터 시트보기 (PDF) - Future Technology
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FT245R Datasheet PDF : 37 Pages
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Document No.: FT_000052
FT245R USB FIFO IC Datasheet Version 2.12
Clearance No.: FTDI# 39
Table of Contents
1 Typical Applications ........................................................................ 2
1.1 Driver Support .................................................................................... 2
1.2 Part Numbers...................................................................................... 2
1.3 USB Compliant .................................................................................... 3
2 FT245R Block Diagram .................................................................... 4
3 Device Pin Out and Signal Description ............................................ 7
3.1 28-LD SSOP Package .......................................................................... 7
3.2 SSOP Package Pin Out Description...................................................... 7
3.3 QFN-32 Package ............................................................................... 10
3.4 QFN-32 Package Signal Description .................................................. 10
3.5 FT245R FIFO READ Timing Diagrams ................................................ 13
3.6 FT245R FIFO WRITE Timing Diagrams .............................................. 14
4 Function Description ..................................................................... 15
4.1 Key Features ..................................................................................... 15
4.2 Functional Block Descriptions ........................................................... 16
5 Devices Characteristics and Ratings.............................................. 17
5.1 Absolute Maximum Ratings............................................................... 17
5.2 DC Characteristics............................................................................. 18
6 ........................................................................................................ 20
6.1 EEPROM Reliability Characteristics ................................................... 21
6.2 Internal Clock Characteristics ........................................................... 21
7 USB Power Configurations ............................................................ 22
7.1 USB Bus Powered Configuration ...................................................... 22
7.2 Self Powered Configuration .............................................................. 23
7.3 USB Bus Powered with Power Switching Configuration .................... 24
7.4 USB Bus Powered with Selectable External Logic Supply .................. 25
8 Application Examples .................................................................... 26
8.1 USB to MCU FIFO Interface ............................................................... 26
8.2 Using the External Oscillator ............................................................ 27
9 Internal EEPROM Configuration .................................................... 28
10 Package Parameters ................................................................... 29
10.1 SSOP-28 Package Dimensions........................................................ 29
10.2 QFN-32 Package Dimensions ......................................................... 30
10.3 QFN-32 Package Typical Pad Layout .............................................. 31
10.4 QFN-32 Package Typical Solder Paste Diagram .............................. 31
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