USB Peripheral Controller 18-Pin SOIC

The CY7C63231A includes an integrated USB serial interface engine (SIE). The hardware supports one USB device address with two endpoints. The SIE allows the USB host to communicate with the function integrated into the microcontroller. A 3.3V regulated output pin provides a pull-up source for the external USB resistor on the D– pin. When using an external voltage regulator VREG can be configured as an input pin that can be read on port 2 (P2.0). The USB D+ and D– USB pins can alternately be used as PS/2 SCLK and SDATA signals, so that products can be designed to respond to either USB or PS/2 modes of operation. PS/2 operation is supported with internal pull-up resistors on SCLK and SDATA, the ability to disable the regulator output pin, and an interrupt to signal the start of PS/2 activity. No external components are necessary for dual USB and PS/2 systems, and no GPIO pins need to be dedicated to switching between modes. Slow edge rates operate in both modes to reduce EMI.

• enCoRe™ USB - enhanced Component Reduction
  • Internal oscillator eliminates the need for an external crystal or resonator
  • Interface can auto-configure to operate as PS/2 or USB without the need for external components to switch between modes (no GPIO pins needed to manage dual mode capability)
  • Internal 3.3V regulator for USB pull-up resistor
  • Configurable GPIO for real-world interface without external components
• Flexible, cost-effective solution for applications that combine PS/2 and low-speed USB, such as mice, gamepads, joysticks, and many others
• USB Specification Compliance
  • Conforms to USB Specification, Version 2.0
  • Conforms to USB HID Specification, Version 1.1
  • Supports 1 low-speed USB device address
  • Supports 1 control endpoint and 1 data endpoint
  • Integrated USB transceiver
  • 3.3V regulated output for USB pull-up resistor
• 8-bit RISC microcontroller
  • Harvard architecture
  • 6-MHz external ceramic resonator or internal clock mode
  • 12-MHz internal CPU clock
  • Internal memory
  • 96 bytes of RAM
  • 3 Kbytes of EPROM
  • Interface can auto-configure to operate as PS/2 or USB
  • No external components for switching between PS/2 and USB modes
• I/O ports
  • Up to 10 versatile General Purpose I/O (GPIO) pins, individually configurable
  • High current drive on any GPIO pin: 50 mA/pin current sink
  • Each GPIO pin supports high-impedance inputs, internal pull-ups, open drain outputs, or traditional CMOS outputs
  • Maskable interrupts on all I/O pins
  • XTALIN, XTALOUT and VREG can be configured as additional input pins
• Internal low-power wake-up timer during suspend mode
  • Periodic wake-up with no external components
• Optional 6-MHz internal oscillator mode
  • Allows fast start-up from suspend mode
• Watchdog timer (WDT)
• Low-voltage Reset at 3.75V
• Internal brown-out reset for suspend mode
• Improved output drivers to reduce EMI
• Operating voltage from 4.0V to 5.5VDC
• Operating temperature from 0 to 70 degrees Celsius
• available in DIE form or 16-pin PDIP
• available in 18-pin SOIC, 18-pin PDIP
• Industry-standard programmer support