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參數(shù)資料
| 型號(hào)： | FT232RL-REEL |
| 廠商： | FTDI, Future Technology Devices International Ltd |
| 文件頁數(shù)： | 8/43頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC USB FS SERIAL UART 28-SSOP |
| 產(chǎn)品培訓(xùn)模塊： | USB Introduction USB-UART Interface Solutions |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | USBmadeEZ-UART |
| 特點(diǎn)： | USB 至 UART |
| 通道數(shù)： | 1，UART |
| FIFO's： | 256 字節(jié) |
| 規(guī)程： | RS232，RS422，RS485 |
| 電源電壓： | 3.3 V ~ 5.25 V |
| 帶自動(dòng)流量控制功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 634 (CN2011-ZH PDF) |
| 配用： | 768-1023-ND - MOD USB RS232 DEV/EVAL FT232RL 768-1022-ND - MOD USB UART MINI B DEV FT232R 768-1021-ND - MOD USB UART MINI DEV FT232R 768-1019-ND - MOD USB UART DEV FT232R |
| 其它名稱： | 768-1007-6 |
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Copyright 2010 Future Technology Devices International Limited
16
Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.10
Clearance No.: FTDI# 38
Additionally, the UART signals can each be individually inverted and have a configurable high drive
strength capability. Both these features are configurable in the EEPROM.
Baud Rate Generator - The Baud Rate Generator provides a 16x clock input to the UART Controller
from the 48MHz reference clock. It consists of a 14 bit pre-scaler and 3 register bits which provide fine
tuning of the baud rate (used to divide by a number plus a fraction or “sub-integer”). This determines the
baud rate of the UART, which is programmable from 183 baud to 3 Mbaud.
The FT232R supports all standard baud rates and non-standard baud rates from 183 Baud up to 3
Mbaud. 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 on the FTDI
website (www.ftdichip.com) for more details.
RESET Generator - The integrated Reset Generator Cell provides a reliable power-on reset to the device
internal circuitry at power up. The RESET# input pin allows an external device to reset the FT232R.
RESET# can be tied to VCC or left unconnected if not being used.
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