FT221XQ-T FTDI, FT221XQ-T Datasheet - Page 10
FT221XQ-T
Manufacturer Part Number
FT221XQ-T
Description
USB Interface IC USB to 8 bit SPI / FT1248 IC QFN-20
Manufacturer
FTDI
Datasheet
1.FT221XS-R.pdf
(47 pages)
Specifications of FT221XQ-T
Rohs
yes
Tradename
X-Chip
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Table 3.6 FT1248 Interface and CBUS Group (see note 1)
Notes:
1. When used in Input Mode, the input pins are pulled to VCCIO via internal 75kΩ (approx) resistors.
These pins can be programmed to gently pull low during USB suspend (PWREN# = “1”) by setting an
option in the MTP memory.
Pin No.
20
18
17
10
19
4
2
9
1
7
8
5
MIOSI[0]
MIOSI[1]
MIOSI[2]
MIOSI[3]
MIOSI[4]
MIOSI[5]
MIOSI[6]
MIOSI[7]
CBUS3
Name
MISO
CS#
CLK
Copyright © 2013 Future Technology Devices International Limited
Output
Input
Input
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Bi-Directional data bit 0
Bi-Directional data bit 1
Bi-Directional data bit 2
Bi-Directional data bit 3
Bi-Directional data bit 4
Bi-Directional data bit 5
Bi-Directional data bit 6
Bi-Directional data bit 7
Clock input from FT1248 interface master
Chip select input to enable the device interface. Active low logic.
Master In Serial Out. Used to provide status information to the FT1248
interface master.
Configurable CBUS I/O Pin. Function of this pin is configured in the
device MTP memory. See CBUS Signal Options, Table 3.7.
Document No.: FT_000630 Clearance No.: FTDI# 263
Description
Version 1.2
10
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