FT4232HQ - REEL FTDI, Future Technology Devices International Ltd, FT4232HQ - REEL Datasheet - Page 32

• Manufacturer Part Number: FT4232HQ - REEL
• Description: IC USB UART/MPSSE QUAD HS 64-QFN
• Manufacturer: FTDI, Future Technology Devices International Ltd
• Series: USBmadeEZ-FIFOr

Specifications of FT4232HQ - REEL

• Features: USB to UART and/or SPI, I2C, JTAG
• Number Of Channels: 4, QUART
• Fifo's: 2048 Byte
• Protocol: RS-232, RS-422, RS-485
• Voltage - Supply: 3 V ~ 3.6 V
• With Auto Flow Control: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 64-QFN
• For Use With: 768-1031 - MOD USB HS FT4232H EVAL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1027-2; FT4232HQ - REEL

Self Powered application example 2: Self powered configuration (with additional 1.8V LDO voltage
regulator for VCORE)
Figure 6.4 Self Powered Configuration Example 2
Figure 6.4 illustrates the FT4232H in a typical USB self powered configuration similar to Figure 6.3. The
difference here is that the +1.8V for the FT4232H core has been regulated from the external power
supply.
Note that in this set-up, the EEPROM should be configured for self-powered operation.
Ext. Power Supply
VBUS
GND
D+
D-
1
2
1
6
3
2
5
1
2
3
4
0?
GND
D
CS
ORG
GND
SCL
GND
93C46
GND
VBUS
100nF
VCC
DU
GND
10K
Copyright © 2010 Future Technology Devices International Limited
Q
100nF
+3.3V
8
4
7
+3.3V
GND
10K
Vin
+3.3V
+3.3V
LDO +1.8V
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
GND
GND
4.7K
10K
Vin
LDO +3.3V
10K
Vout
2.2K
GND
GND
GND
Vout
+1.8V
GND
GND
100nF
12K
+3.3V
GND
GND
EECLK
100nF
EEDATA
1
27pF
12MHz
1K
GND
3
4.7uF
GND
27pF
GND
4.7uF
50
49
14
63
62
61
13
7
8
6
2
3
GND
100nF 100nF
VREGOUT
VREGIN
RESET#
REF
DM
DP
EECS
EECLK
OSCI
OSCO
TEST
EEDATA
GND
+1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
GND
100nF
+1.8V
GND
Document No.: FT_000060
100nF 100nF
Clearance No.: FTDI#78
GND
Datasheet Version 2.10
GND
SUSPEND#
+3.3V
PWREN#
CDBUS0
DDBUS0
ADBUS0
ADBUS1
ADBUS2
ADBUS3
ADBUS4
ADBUS5
ADBUS6
ADBUS7
BDBUS0
BDBUS1
BDBUS2
BDBUS3
BDBUS4
BDBUS5
BDBUS6
BDBUS7
CDBUS1
CDBUS2
CDBUS3
CDBUS4
CDBUS5
CDBUS6
CDBUS7
DDBUS1
DDBUS2
DDBUS3
DDBUS4
DDBUS5
DDBUS6
DDBUS7
GND
100nF 100nF 100nF 100nF
GND
16
17
18
19
21
22
23
24
26
27
28
29
30
32
33
34
38
39
40
41
43
44
45
46
48
52
53
54
55
57
58
59
60
36
GND
GND
32