Infineon CY7C64215-28PVXC, USB Controller, 12Mbps, USB 2.0, 3 to 5.25 V, 28-Pin SSOP

Powerful Harvard-architecture processor
Advanced peripherals (enCoRe™ III blocks)
Full-duplex universal asynchronous receiver-transmitter (UART)
CYFISNP modules to talk to Cypress CYFI™ radio
Complex peripherals by combining blocks
No external crystal required
Flexible on-chip memory
16 KB flash program storage 50,000 erase/write cycles
1 KB SRAM data storage
In-system serial programming (ISSP)
Partial flash updates
Flexible protection modes
EEPROM emulation in flash
Programmable pin configurations
Configurable interrupt on all GPIOs
Precision, programmable clocking
Internal ±4% 24- and 48-MHz oscillator with support for
external clock oscillator
Internal oscillator for watchdog and sleep
Additional system resources Inter-integrated circuit (I2C) slave, master, and multimaster to 400 kHz
Watchdog and sleep timers
User-configurable low-voltage detection (LVD)
Integrated supervisory circuit
On-chip precision voltage reference
Free development software (PSoC® Designer)
Full-featured, in-circuit emulator and programmer
Full-speed emulation
Complex breakpoint structure