CY7C64225 Datasheet, PDF (6/19 Pages) Cypress Semiconductor – USB-to-UART Bridge Controller

CY7C64225
Application Circuits
The following diagrams illustrates typical application schematics
circuits.
Bus Powered Design
The figure below illustrates the USB bus powered design using
CY7C64225. The internal voltage regulator provides the 3.3 V
required by the internal USB transceiver. The device parameters
such as ‘Power consumption’ and ‘Bus / Self Powered’ in the
internal flash can be modified as required by the application,
using the configuration utility CyUsbUart.
A 1K series resistor is required for VBUS pin of CY7C64225 in
this configuration.
Figure 3. Bus Powered Configuration
VDD
VDD
VDD
VDD
VDD
VBUS
VBUS
Rx_LED
1k
D+
D+
560
VCFG
D-
24
D-
560
Tx_LED
GND
24
560
SUSPEND
VDD
SW2
0.01uF
VDD
SW1
0.01uF
CY7C64225
WAKEUP
TxD
RxD
1k
RTS
CTS
RESET
DTR
DSR
GND
GND
1k
Document Number: 001-76294 Rev. *B
Page 6 of 19