DS_FT231X Datasheet, PDF (30/44 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd FT231X

FT231X USB TO FULL HANDSHAKE UART IC
Datasheet
Version 1.2
Document No.: FT_000565 Clearance No.: FTDI# 261
VBUS
3V3OUT
VBUS 3V3OUT
VBUS 3V3OUT
CN USB
VBUS
D-
D+
ID
GND
1
2
3
4
5
600R/2A
27R
27R
10nF
N.F.
0R
0.1uF
SLD GND
GND
GND
3V3OUT
DM
DP
RESET#
0.1uF
0.1uF
GND
GND
CBUS0
CBUS1
CBUS2
18
17
10
BCD#
PWREN#
SLEEP#
FT231X
GND
VBUS VBUS
VBUS
VBATT
0.1uF
4.7uF
GND GND
1
2
3
4
5
CHRG
VCC
FAULT
TIMER
GND
ACPR
BAT
SHDN
PROG
NTC
10
9
8
7
6
SLEEP#
NTC
1+
NCT
-
TB3.5mm
0.1uF
GND
EEPROM Setting
X-Chip Pin
CBUS0
CBUS1
CBUS2
Function
BCD#
PWREN#
SLEEP#
LTC4053EDD
2K2
16K5 1% 4K32 1% 1K5 - 1%
1uF
BCD#
1R
PWREN#
GND
GND
GND GND
Battery Options
Battery Charger Enable X
Force Power Enable
De-acticate Sleep
X
VBUS
NTC
4K32 1%
JUMPER-2mm
JP1
SIP-3
GND GND
1A when connected to a dedicated charger port
0.4A when enumerated
0.1A when not enumerated and not in sleep
0A when in sleep
GND
JP1
NCT Available
1-2 NCT Enabled
2-3 NCT Disabled (Default)
Figure 7.6 USB Battery Charging Detection (3 pin)
To calculate the equivalent resistance on the LTC4053 PROG pin select a charge current, then Res =
1500V/I_chg
For more configuration options of the LTC4053 refer to:
AN_175_Battery Charging Over USB
Note: If the FT231X is connected to a standard host port such that the device is enumerated the battery
charge detection signal is inactive as the device will not be in suspend.
7.5 LED Interface
Any of the CBUS I/O pins can be configured to drive an LED. The FT231X has 3 configuration options for
driving LEDs from the CBUS. These are TXLED#, RXLED#, and TX&RXLED#. Refer to Section 3.3 for
configuration options.
Copyright © 2013 Future Technology Devices International Limited
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