參數(shù)資料
型號(hào)： FT232HQ-REEL
廠商： FTDI, Future Technology Devices International Ltd
文件頁(yè)數(shù)： 32/65頁(yè)
文件大?。?/td> 0K
描述： IC HS USB TO UART/FIFO 48QFN
應(yīng)用說(shuō)明： FT1248 Application Note
標(biāo)準(zhǔn)包裝： 1
通道數(shù)： 1，UART
FIFO's： 4kb
規(guī)程： RS232，RS422，RS485
電源電壓： 1.62 V ~ 1.98 V，2.97 V ~ 3.63 V
帶并行端口： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
安裝類型： 表面貼裝
封裝/外殼： 48-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 48-QFN（8x8）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： 768-1102-6
Copyright 2012 Future Technology Devices International Limited
38
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.8
Clearance No.: FTDI #199
4.9 Fast Serial Interface Mode Description
Fast Serial Interface Mode provides a method of communicating with an external device over USB using 4
wires that can have opto-isolators in their path, thus providing galvanic isolation between systems. Fast
serial mode is enabled by setting the appropriate bits in the external EEPROM. The fast serial mode can
be held in reset by setting a bit value of 0x10 using the FT_SetBitMode D2xx driver command. While this
bit is set the device is held reset – data can be sent to the device, but it will not be sent out by the device
until the device is enabled again. This is done by sending a bit value of 0x00 using the Set Bit Mode
command.
When the FT232H is configured in Fast Serial Interface mode the IO timing of the signals used are shown
Figure 4.17 Fast Serial Interface Signal Waveforms
Name
Minimum Typical
Maximu
Units
Description
t1
5
ns
FSDO/FSC TS hold time
t2
5
ns
FSDO/FSC TS setup time
t3
5
ns
FSDI hold time
t4
10
ns
FSDI Setup Time
t5
10
ns
FSC LK low
t6
10
ns
FSC LK high
t7
20
ns
FSC LK Period
Table 4.5 Fast Serial Interface Signal Timings
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