參數(shù)資料
型號(hào): FT232HL-REEL
廠商: FTDI, Future Technology Devices International Ltd
文件頁數(shù): 26/65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(dòng)位檢測(cè)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
32
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.8
Clearance No.: FTDI #199
4.6.2 FT1248: 1-bit interface
The FT1248 Interface transfers data over different bus widths (1-bit, 2-bit, 4-bit and 8-bit). Figure 4.21
and Figure 4.22 illustrates the waveform detailing the FT1248 write and read protocol operating in 1-bit
mode with flow control. Please refer to the application notes AN_167_FT1248 Parallel Serial Interface
Basics available at http://www.ftdichip.com for more details regarding 1-bit without flow control, 2-bit, 4-
bit and 8-bit modes.
BUS TURNAROUND
WRITE DATA
COMMAND PHASE
BUS TURNAROUND
TXE#
CMD3
0
CMD2
CMD1 CMD0
B7
B6
B5
B4
B3
B2
B1
B0
TXE#
SCLK
SS_n
MIOSIO[0]
PULLED HIGH
RXF#
MISO
MIOSIO[7:1]
TXE#
ACK
RXF#
BUS TURNAROUND
Figure 4.10: FT1248 1-bit Mode Protocol (WRITE)
BUS TURNAROUND
READ DATA
COMMAND PHASE
BUS TURNAROUND
TXE#
CMD3
0
CMD2
CMD1 CMD0
B7
B6
B5
B4
B3
B2
B1
B0
TXE#
SCLK
SS_n
MIOSIO[0]
PULLED HIGH
RXF#
MISO
MIOSIO[7:1]
RXF#
ACK
RXF#
Figure 4.11: FT1248 1-bit Mode Protocol (READ)
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