[Genesys-Logic]

FUNCTIONAL OVERVIEW

The GL602USB is an 8-bit RISC-like high performance microcontroller with a built-in 1.5Mbps SIE and transceiver. The microcontroller features 33 instructions optimized for USB keyboard. There are 96 bytes onchip RAM and 4K x 14 bits program ROM incorporated into the micro-controller. The micro-controller features 18 output pins and 8 input pins to make a 18 x 8 key matrix. Additionally, 3 GPIO pins are strong enough to drive LEDs. 4 GPIO pins can be used by any function, for example, support a PS/2 3D mouse to USB 3D mouse converter in the default firmware. Legacy USB cable can be used for keyboard in USB mode. All GPIO ports feature low EMI emissions as a result of improved output drivers with slew-rate control.

FEATURES

? Low-cost solution for low-speed USB keyboard

? 8-bit micro-controller

? Operation Speed: 6MHz clock input

? Performance: 3 MIPS @ 6MHz

? Single cycle instruction execution

? RISC-like architecture

? USB optimized instruction set

? USB Specification Compliance

? Conforms to USB 12Mbps Specification, Version 1.1

? Conforms to USB HID Class Specification, Version 1.1

? Supports 1 device address and 4 endpoints (include endpoint 0)

? I/O ports

? Up to 7(GL602USB)/5(GL602USB-A) general purpose I/O pins (OTP type is less a GPIO pin than mask type).

? Up to 8 sense pins and 1 I/O pin with remote wakeup capability

? Up to 18(GL602USB)/8(GL602USB-A) output pins optimized for key matrix drive pin

? Up to 8(GL602USB)/4(GL602USB-A) output pins optimized for key matrix sense pin

? Up to 3(GL602USB)/1(GL602USB-A) I/O pins with LED drive capability

? Internal memory

? 96 bytes of RAM

? 4K x 14 of program ROM

? On-chip 3.3v output

? No external regulator required

? Improved output drivers with slew-rate control to reduce EMI

? 6 MHz external clock

? Internal power-on reset (POR)

? Internal power-fail detector

? Supports suspend/normal mode power management

? Suspend current lower than 400μA for the whole keyboard system (mask type)

? 8-bit free-running timer

? Available in cost saving 40-pin(GL602USB) PDIP, 24-pin(GL602USB-A) SOP

? Support a PS/2 mouse to USB mouse converter in the default firmware.