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FT221XS-R bảng dữ liệu(HTML) 4 Page - Future Technology Devices International Ltd.

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Copyright © 2013 Future Technology Devices International Limited
4
FT221X USB 8-BIT SPI/FT1248 IC Datasheet
Version 1.3
Document No.: FT_000630 Clearance No.: FTDI# 263
2 FT221X Block Diagram
3.3 Volt LDO
Regulator
1.8 Volt LDO
Regulator
USB
Transceiver
with
Integrated
1.5k pullups
and battery
charge
detection
USB DPLL
Internal
12MHz
Oscillator
X4 Clock
Multiplier
Serial Interface
Engine
(SIE)
USB
Protocol Engine
FT1248
Controller
Reset
Generator
FIFO TX Buffer
(512 bytes)
FIFO RX Buffer
(512 bytes)
Internal MTP
Memory
48MHz
GND
RESET#
To USB Transceiver Cell
3V3OUT
VCCIO
3V3OUT
VCC
USBDP
USBDM
1V8 Internal
Core Supply
MIOSI[0]
MIOSI[1]
MIOSI[2]
MIOSI[3]
MIOSI[4]
MIOSI[5]
MIOSI[6]
MISOI[7]
CLK
CS#
MISO
CBUS3
Figure 2.1 FT221X Block Diagram
For a description of each function please refer to Section 4.



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