Datasheet > TTL-232R-3V3

TTL-232R-3V3

更新时间： 2024-02-25 21:30:12

品牌	Logo	应用领域
飞特帝亚 - FTDI		转换器连接器连接器支架
页数	文件大小	规格书
8页	510K
描述
USB to TTL Serial Converter Cable

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中文翻译

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技术参数
数据手册

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TTL-232R-3V3 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	风险等级：	1.48
Is Samacsys：	N	认证：	UL
连接器Side1：	USB	连接器Side2：	UART
连接器支架类型：	CABLE ASSEMBLY	直径：	5 mm
最高工作温度：	85 °C	最低工作温度：	-40 °C
屏蔽：	NO	线规：	24 AWG
电线和电缆名称：	COMMUNICATION CABLE	Base Number Matches：	1

TTL-232R-3V3 数据手册

Page 3

2. Features and Enhancements of FT232R applicable to TTL-232R

2.1 FT232R Key Features

The TTL-232R uses FTDI’s FT232RQ USB to serial IC device. This section summarises the key features and

enhancements of the FT232RQ which apply to the TTL-232R USB to serial TTL converter cable. For further details,

and a full features and enhancements description consult the FT232R datasheet, which is available from the FTDI

website.

Lower Operating and Suspend Current - The device operating supply current has been further reduced to 15mA,

and the suspend current has been reduced to around 70μA. This allows greater margin for peripheral devices

incorporating the TTL-232R to meet the USB suspend current limit of 500μA.

Low USB Bandwidth Consumption - The operation of the USB interface to the FT232R IC, and thus the TTL-232R

has been designed to use as little as possible of the total USB bandwidth available from the USB host controller.

High Output Drive Option - The UART interface I/O pins on the TTL-232R (RXD, TXD, RTS#, and CTS#) are

conﬁgured to use the FT232R’s high output drive option. This option makes the FT232R I.C.’s I/O pins drive out at

three times the standard signal drive level thus allowing multiple devices to be driven, or devices that require a greater

signal drive strength to be interfaced to the FT232R. This option is enabled in the internal EEPROM.

UART Pin Signal Inversion - The sense of each of the eight UART signals can be individually inverted by setting

options in the internal EEPROM. Thus, CTS# (active low) can be changed to CTS (active high), or TXD can be

changed to TXD#.

FTDIChip-ID™ - Each FT232R is assigned a unique number which is burnt into the device at manufacture. This ID

number cannot be reprogrammed by product manufacturers or end-users. This allows the possibility of using FT232R

based dongles for software licensing. Further to this, a renewable license scheme can be implemented based on the

FTDIChip-ID™ number when encrypted with other information. This encrypted number can be stored in the user area

of the FT232R internal EEPROM, and can be decrypted, then compared with the protected FTDIChip-ID™ to verify

that a license is valid. Web based applications can be used to maintain product licensing this way. An application note

describing this feature is available separately from the FTDI website.

Improved EMI Performance - The reduced operating current and improved on-chip VCC decoupling signiﬁcantly

improves the ease of PCB design requirements for the FT232R in order to meet FCC, CE and other EMI related

speciﬁcations. The TTL-232R has passed FCC and CE testing.

Programmable Receive Buffer Timeout - The receive buffer timeout is used to ﬂush remaining data from the

receive buffer. This time defaults to 16ms, but is programmable over USB in 1ms increments from 1ms to 255ms, thus

allowing the device to be optimised for protocols that require fast response times from short data packets.

Baud Rates - The TTL-232R supports all standard baud rates and non-standard baud rates from 300 Baud up to 3

Megabaud. Achievable non-standard baud rates are calculated as follows -

Baud Rate = 3000000 / (n + x)

where n can be any integer between 2 and 16,384 ( = 2¹⁴) and x can be a sub-integer of the value 0, 0.125, 0.25,

0.375, 0.5, 0.625, 0.75, or 0.875. When n = 1, x = 0, i.e. baud rate divisors with values between 1 and 2 are not

possible.

This gives achievable baud rates in the range 183.1 baud to 3,000,000 baud. When a non-standard baud rate is

required simply pass the required baud rate value to the driver as normal, and the FTDI driver will calculate the

required divisor, and set the baud rate. See FTDI application note AN232B-05 for more details.

Extended Operating Temperature Range - The TTL-232R is capable of operating over an extended temperature

range of -40º to +85º C thus allowing the device to be used in automotive and industrial applications.

TTL-232R USB to TTL Serial Converter Cable

Datasheet Version 1.0

1 234 5 6 7 8

中文翻译

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与TTL-232R-3V3相关器件

型号	品牌	获取价格	描述	数据表
TTL-232R-3V3-2MM	FTDI	获取价格	TTL TO USB SERIAL CONVERTER RANGE OF CABLES
TTL-232R-3V3-AJ	FTDI	获取价格	TTL TO USB SERIAL CONVERTER RANGE OF CABLES
TTL-232R-3V3-PCB	FTDI	获取价格	TTL to USB Serial Converter PCB
TTL-232R-3V3-WE	FTDI	获取价格	TTL TO USB SERIAL CONVERTER RANGE OF CABLES
TTL-232R-5V	FTDI	获取价格	TTL TO USB SERIAL CONVERTER RANGE OF CABLES
TTL-232R-5VAJ	FTDI	获取价格	TTL to USB Serial Converter Range of Cables
TTL-232R-5V-AJ	FTDI	获取价格	TTL TO USB SERIAL CONVERTER RANGE OF CABLES
TTL-232R-5V-PCB	FTDI	获取价格	TTL to USB Serial Converter PCB
TTL-232R-5VWE	FTDI	获取价格	TTL to USB Serial Converter Range of Cables
TTL-232R-5V-WE	FTDI	获取价格	TTL TO USB SERIAL CONVERTER RANGE OF CABLES

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