FT232HL 查看數據表（PDF） - Future Technology

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FT232HL

Single Channel HiSpeed USB to Multipurpose UART/FIFO IC

Future Technology 

Document No.: FT_000288

FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC

Datasheet Version 1.8

Clearance No.: FTDI #199

Pin No.

Name

Type

Description

1

OSCI

INPUT Oscillator input.

2

OSCO

OUTPUT Oscillator output.

5

REF

INPUT Current reference – connect via a 12KΩ resistor @ 1% to GND.

6

DM

INPUT USB Data Signal Minus.

7

DP

INPUT USB Data Signal Plus.

42

TEST

INPUT IC test pin – for normal operation must be connected to GND.

34

RESET#

INPUT Reset input (active low).

31

PWRSAV#

INPUT

Table 3.2 Common Function pins

USB Power Save input. This is an EEPROM configurable option which

is set using a ’Suspend on DBus7 Low’ bit on FT_PROG . This option

is available when the FT232H is on a self powered mode and is used

to prevent forcing current down the USB lines when the host or hub

is powered off.

PWRSAV# = 1 : Normal Operation

PWRSAV# = 0 : FT232H forced into SUSPEND mode.

PWRSAV# can be connected to VBUS of the USB connector (via a

39KΩ resistor). When this input goes high, then it indicates to the

FT232H that it is connected to a host PC. When the host or hub is

powered down then the FT232H is held in SUSPEND mode.

Copyright © 2012 Future Technology Devices International Limited

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