GL603USB-A

·  Low-cost solution for PS/2 and low-speed USB combo mouse
·  8-bit micro-controller
-  Operation Speed: DC to 6MHz clock input
-  Performance: 3 MIPS/6 MIPS @ 6MHz (6 MIPS is only for mask type)
-  Single cycle instruction execution
-  RISC-like architecture
-  USB optimized instruction set
·  USB Specification Compliance
-  Conforms to USB 1.5Mbps Specification, Version 1.1
-  Conforms to USB HID Class Specification, Version 1.1
-  Supports 1 device address and 2 endpoints (include endpoint 0)
·  I/O ports
-  Up to 13(GL603USB)/11(GL603USB-A)/9(GL603USB-B) general purpose I/O pins (OTP type is less a GPIO pin than mask type, and the number is not included CLK/DATA in PS/2 mode).
-  Internal RC clock to wakeup periodically (about 200ms for mask type, 500ms for OTP type) when suspend
-  Up to 8(GL603USB)/6(GL603USB-A)/4(GL603USB-B) special purpose I/O pins optimized for photo-sensor (Internal build in 4 bits ADC)
-  Up to 2 I/O pins with large current drive capability to drive LED (Sink current up to 16 mA)
-  2 open drain I/O pins combined with USB D+/D- functions to be used as DATA and CLK in PS/2 mode
·  Internal memory
-  64 bytes of RAM (special purpose register is not included)
-  2.75K x 14 of program ROM
·  Integrated USB transceiver with open drain I/O capability
-  In PS/2 mode, D+ used as CLK and D- used as DATA
-  Use legacy USB cable and add an USB to PS/2 converter to connect PS/2 port
·  Patented full-range detection for photo-sensor
-  Removes the expensive process of matching LED and photo-sensor
·  On-chip 3.3v output
-  No external regulator required
·  Improved output drivers with slew-rate control to reduce EMI
·  6 MHz external clock
·  Build in clock generator to generate 12 MHz internal clock for micro-controller (mask type only)
-  Improve photo-sensor sampling rate up to 100 us per sample in USB mode and 80 us in PS/2 mode
·  Internal power-on reset(POR)
·  Internal power-fail detector
·  Supports suspend/normal mode power management
-  Suspend current lower than 400mA for whole mouse system (mask type)
·  8-bits free-running timer

Maximum ratings are the extreme limits to which the GL652USB can be exposed without permanently damaging it. The GL652USB contains circuitry to protect the inputs against damage from high static voltages; however, do not apply voltages higher than those shown in the table. Keep V_IN and V_OUT within the range GND (V_IN or V _OUT) V_CC. Connect unused inputs to the appropriate voltage level, either GND or V_DD.

The GL603USB is a 8-bits RISC-like high performance microcontroller with a built-in 1.5Mbps SIE and transceiver. The microcontroller GL603USB features 33 instructions optimized for USB and PS/2 mouse. There are 64 bytes on-chip RAM and 2.75K x 14 program ROM incorporated into the microcontroller. Because the GL603USB build in a clock generator circuit, it can accepts a 6 MHz ceramic resonator or a crystal as its  clock source. The clock generator can generate 12 MHz clock for micro-controller to sense mouse tracking signal. The clock is only enabled when bit 1 of PORTCON1 register is cleared. In default firmware, it indicates the controller is running on PS/2 mouse mode. The sampling rate of mouse tracking signal can be up to 100 us in USB mode and 80 us in PS/2 mode. The micro-controller features 13 general purpose I/Os (GPIOs). 8 GPIO pins build in 4 bits ADC for photo-sensor input to remove the expensive process of matching LED and photo-sensor. Additionally, 2 GPIO pins are strong enough to drive LEDs. The other 3 GPIO pins is used for mouse buttons by default firmware. Beside the 13 GPIO pins, another 2 GPIO pins combined with USB D+/D- functions can be used as DATA and CLK in PS/2 mode. Legacy USB of GL603USB cable can be used for mouse in USB mode and an USB to PS/2 converter is required in PS/2 mode. All GPIO ports feature low EMI emissions as a result of improved output drivers with slew-rate control.