UPSD3422_V01 datasheet(177/300 Pages) STMICROELECTRONICS

Part #	UPSD3422

Description	Turbo Plus series Fast Turbo 8032 MCU with USB and programmable logic

PDF	300 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

177 / 300 page

Obsolete

Product(s)

- Obsolete

Product(s)

Obsolete

Product(s)

- Obsolete

Product(s)

UPSD3422, UPSD3433, UPSD3434, UPSD3454

USB interface

177/300

25.5

Typical connection to USB

Connecting the UPSD34xx to the USB is simple and straightforward. Figure 55 shows a

typical self-powered example requiring only three resistors and a USB power detection

circuit. The USB power detection circuit detects when the device has been connected to the

USB. When VBUS is detected, it switches 3.3 V to the pull-up resistor on the D+ line. Per the

USB specification, the pull-up resistor on D+ is required to signal to the upstream USB port

when a full speed device has been connected to the bus. The resistors in series in the D+

and D– lines are recommended per the USB specification to reduce transients on the data

lines.

Figure 55.

Typical self powered example

USB power

detection block

VBUS

VCC

D–

D+

GND

USB–

USB+

GND

VCC

VDD

VCC

VDD

USB

uPSD34xx

1.5K

+3.3V

AI10495

Obsolete

Product(s)

- Obsolete

Product(s)

UPSD3422 Datasheet(PDF) 177 Page - STMicroelectronics

UPSD3422 Datasheet(HTML) 177 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL