參數(shù)資料
型號: FT232HL-REEL
廠商: FTDI, Future Technology Devices International Ltd
文件頁數(shù): 50/65頁
文件大?。?/td> 0K
描述: IC HS USB TO UART/FIFO 48LQFP
應(yīng)用說明: 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:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 768-1101-6
Copyright 2012 Future Technology Devices International Limited
54
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.8
Clearance No.: FTDI #199
6.3 Oscillator Configuration
Figure 6.4 Recommended FT232H Oscillator Configuration
Figure 6.4 illustrates how to connect the FT232H with a 12MHz ± 0.003% crystal. In this case loading
capacitors should to be added between OSCI, OSCO and GND as shown. A value of 27pF is shown as the
capacitor in the example – this will be good for many crystals but it is recommended to select the loading
capacitor value based on the manufacturer’s recommendations wherever possible. It is recommended to
use a fundamental mode, parallel cut type crystal.
It is also possible to use a 12 MHz Oscillator with the FT232H. In this case the output of the oscillator
would drive OSCI, and OSCO should be left unconnected. The oscillator must have a CMOS output drive
capability.
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
OSCI Vin
Input Voltage
2.97
3.3V
3.63
V
Fin
Input Frequency
12MHz
MHz
± 30ppm
Ji
Cycle to cycle jitter
<150
pS
Table 6.1 OSCI Input characteristics
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