FT240X USB 8-BIT FIFO IC Datasheet
Version 1.3
Document No.: FT_000626 Clearance No.: FTDI# 259
2 FT240X Block Diagram
VCC
1V8 Internal
Core Supply
3.3 Volt LDO
Regulator
1.8 Volt LDO
Regulator
3V3OUT
FIFO RX Buffer
(512 bytes)
VCCIO
DATA[0]
DATA[1]
DATA[2]
DATA[3]
DATA[4]
DATA[5]
DATA[6]
DATA[7]
USB
Transceiver
with
Integrated
1.5k pullups
and battery
charge
USBDP
USBDM
Serial Interface
Engine
USB
Protocol Engine
(SIE)
FIFO Interface
Controller
RXF#
TXE#
RD#
detection
WR
SIWUA
CBUS5
CBUS6
Internal MTP
Memory
USB DPLL
FIFO TX Buffer
(512 bytes)
3V3OUT
RESET#
Internal
12MHz
Oscillator
X4 Clock
Multiplier
Reset
Generator
48MHz
To USB Transceiver Cell
GND
Figure 2.1 FT240X Block Diagram
For a description of each function please refer to Section 4.
Copyright © 2013 Future Technology Devices International Limited
4
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