FT232HQ-REEL FTDI, Future Technology Devices International Ltd, FT232HQ-REEL Datasheet - Page 31

• Manufacturer Part Number: FT232HQ-REEL
• Description: IC HS USB TO UART/FIFO 48QFN
• Manufacturer: FTDI, Future Technology Devices International Ltd

Specifications of FT232HQ-REEL

• Number Of Channels: 1, UART
• Fifo's: *
• Protocol: RS-232, RS-422, RS-485
• Voltage - Supply: 1.62 V ~ 1.98 V, 2.97 V ~ 3.63 V
• With Parallel Port: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• With Auto Flow Control: -
• With Irda Encoder/decoder: -
• With Cmos: -
• Other names: 768-1102-2

4.6.2 FT1248: 1-bit interface
The FT1248 Interface transfers data over different bus widths (1-bit, 2-bit, 4-bit and 8-bit). Figure 4.21
and Figure 4.22 illustrates the waveform detailing the FT1248 write and read protocol operating in 1-bit
mode with flow control. Please refer to the application notes AN_167_FT1248 Parallel Serial Interface
Basics available at
bit and 8-bit modes.
Figure 4.10: FT1248 1-bit Mode Protocol (WRITE)
Figure 4.11: FT1248 1-bit Mode Protocol (READ)
MIOSIO[7:1]
MIOSIO[7:1]
MIOSIO[0]
MIOSIO[0]
SCLK
MISO
SS_n
SCLK
SS_n
MISO
RXF#
RXF#
TXE#
TXE#
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CMD3
CMD3
BUS TURNAROUND
BUS TURNAROUND
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
0
0
COMMAND PHASE
COMMAND PHASE
0
0
CMD2
CMD2
0
0
for more details regarding 1-bit without flow control, 2-bit, 4-
CMD1 CMD0
CMD1 CMD0
PULLED HIGH
PULLED HIGH
TXE#
RXF#
ACK
B7
ACK
B7
BUS TURNAROUND
BUS TURNAROUND
B6
B6
B5
B5
B4
B4
WRITE DATA
READ DATA
B3
B3
Document No.: FT_000288
Clearance No.: FTDI #199
B2
B2
Datasheet Version 1.2
B1
B1
B0
B0
BUS TURNAROUND
RXF#
RXF#
TXE#
TXE#
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