USB Security Token Design

collinsemasi

collinsemasi

hey

flux

Hello! How can I help you with your USB Security Token schematic today? For example, I can:
  • Size and assign values to your decoupling capacitors for the LDO regulator (U1) and the STM32 (U3).
  • Specify the reset-cap value on NRST and add the corresponding pull-up resistor.
  • Add the USB full-speed pull-up resistor on D+ and the recommended 22 Ω series resistors on D+ and D–.
Let me know which of these (or anything else) you’d like to tackle first!
size decoupling caps
specify reset cap
add USB pull-up
add series resistors
D2i
R1
Resistance
330 Ω
VOUT
C1
Capacitance
1uF
D+
VOUT
U4
Manufacturer Part Number
HMX3033HNA
C5
Capacitance
100nF
J2
D2i
VIN
VOUT
D+
Y1
Manufacturer Part Number
CSTNE8M00G55A000R0
C6
Capacitance
100nF
D-
U1
Manufacturer Part Number
ME6206A33XG
C2
Capacitance
1uF
D1i
VIN
VOUT
C7
Capacitance
100nF
D1i
C4
Capacitance
100nF
C3
Capacitance
100nF
VOUT
D-
U2
Manufacturer Part Number
NUF2221W1T2G
U3
Manufacturer Part Number
STM32F103T8U6
LED1
J1
Manufacturer Part Number
USB-A PCB Plug

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Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    usb-security-key.png

    usb-security-key.png

    usb-security-keyThumbnail

    USB Security Token eb69

    USB Security Token eb69 thumbnail
    USB security token powered by STM32.

    Properties

    Arrow

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $3.31–$3.59

    Digi-Key

    $6.46–$6.72

    LCSC

    $4.48

    Mouser

    $6.86

    Verical

    $6.09–$6.19

    Controls