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參數(shù)資料
| 型號： | FT232BM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Generation of FTDI’s Popular USB UART I.C. |
| 中文描述： | 在FTDI的流行的USB UART的新一代集成電路 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 812K |
| 代理商： | FT232BM |
DS232B Version 1.1 Future Technology Devices Intl. Ltd. 2002
Page 7 of 24
FT232BM USB UART ( USB - Serial) I.C.
EEPROM Interface
Though the FT232BM will work without the optional EEPROM, an external 93C46 ( 93C56 or 93C66 ) EEPROM
can be used to customise the USB VID, PID, Serial Number, Product Description Strings and Power Descriptor
value of the FT232BM for OEM applications. The EEPROM is also required for applications where multiple
FT232BM’s are connected to a single PC as the drivers rely on a unique serial number for each device to bind
a unique virtual COM port to each individual device. Other parameters controlled by the EEPROM include
Remote Wake Up, Isochronous Transfer Mode, Soft Pull Down on Power-Off and USB 2.0 descriptor modes.
The EEPROM should be a 16 bit wide configuration such as a MicroChip 93LC46B or equivalent capable of
a 1Mb/s clock rate at VCC = 4.4v to 5.25v. The EEPROM is programmable-on board over USB using a utility
available from FTDI’s web site (
http://www.ftdichip.com
). This allows a blank part to be soldered onto the PCB
and programmed as part of the manufacturing and test process.
If no EEPROM is connected ( or the EEPROM is blank ), the FT232BM will use it’s built-in default VID, PID
Product Description and Power Descriptor Value. In this case, the device will not have a serial number as part
of the USB descriptor.
4.0 Device Pin-Out
Figure 1
Pin-Out (LQFP-32 Package )
EESK
EEDATA
VCC
RESET#
RSTOUT#
3V3OUT
USBDP
USBDM
G
S
R
T
P
P
T
V
GND
RI#
DCD#
DSR#
DTR#
CTS#
RTS#
RXD
T
V
X
X
A
A
T
E
1
8
9
16
17
24
25
32
FTDI
FT232BM
XXYY
25
24
23
22
21
20
19
18
12
16
11
14
15
10
6
8
7
5
27
28
4
32
1
31
2
3
3
2
1
2
1
9
3V3OUT
USBDP
USBDM
RSTOUT#
XTIN
XTOUT
RESET#
EECS
EESK
EEDATA
TEST
TXD
RXD
RTS#
CTS#
DTR#
DSR#
DCD#
RI#
TXDEN
PWREN#
PWRCTL
TXLED#
RXLED#
SLEEP#
G
N
D
G
N
D
A
G
N
D
A
V
V
C
V
C
C
V
C
C
V
C
C
I
O
Figure 2
Pin-Out (Schematic Symbol )
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FT232BQ | 制造商:FTDI 制造商全稱:FTDI 功能描述:USB UART ( USB - Serial) I.C. |
| FT232BQ-REEL | 功能描述:USB 接口集成電路 USB to Serial UART IC QFN-32 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| FT232HL | 制造商:FTDI 制造商全稱:FTDI 功能描述:FT232H Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC |
| FT232HL-REEL | 功能描述:USB 接口集成電路 USB HS to UART/FIFO SPI/JTAG/I2C LQFP-48 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| FT232HL-TRAY | 功能描述:USB 接口集成電路 USB HS to UART/FIFO SPI/JTAG/I2C LQFP-48 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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