FT121Q-R FTDI, FT121Q-R Datasheet - Page 15

• Manufacturer Part Number: FT121Q-R
• Description: USB Interface IC USB CONTROLLER W/SPI SLAVE IC
• Manufacturer: FTDI

Specifications of FT121Q-R

• Rohs: yes
• Product: USB 2.0
• Interface Type: SPI, USB
• Operating Supply Voltage: 4 V to 5.5 V
• Operating Supply Current: 3.9 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-16
• Minimum Operating Temperature: - 40 C

The endpoint buffer configurations, settable using the Set Endpoint Configuration command, are as
follows:
Table 5-4 Endpoint Maximum Packet Size
Note: 504 is the maximum byte count as there are 1024 bytes in total and 8 bytes IN and OUT packets
for control endpoint 0 must always be reserved.
Endpoint buffer size register setting (0b’)
Copyright © 2012 Future Technology Devices International Limited
1100-1111
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
Non-isochronous endpoint
16 bytes
32 bytes
64 bytes
8 bytes
-
-
-
-
-
-
-
-
-
Document No.: FT_000648
Clearance No.: FTDI#
Isochronous endpoint
Datasheet Version 1.0
128 bytes
160 bytes
192 bytes
256 bytes
320 bytes
384 bytes
504 bytes
16 bytes
32 bytes
48 bytes
64 bytes
96 bytes
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