DESCRIPTION

The JunoTM A4 is a member of a series of input device and power management companion ICs for RISC-based portable systems. On a single IC, the JunoTM A4 integrates control of any 4-wire or 8-wire resistive touch screen, keyboard scanning, unique power management capabilities, a direct PS/2 port and plenty of General Purpose Input / Output (GPIO).

FEATURES

• Typically consumes less than 1µA

• Scans an 8 x 16 keyboard matrix that supports Japanese, English and European keyboards

• Interfaces any four-wire or eightwire resistive touch screen

• Operates continuously between 3 Volts and 5 Volts

• Offers unique power management capabilities that work in harmony with Windows® CE power modes

• Always runs in Stop mode without data or event loss

• Provides a direct Zero-PowerTM PS/2 port for the hot-plug connection of an external keyboard or mouse

• Uses proprietary circuitry, so “Stop” mode is entered even when PS/2 device is connected & active

• GPIO pins provide interrupt at both falling and rising edge of signals, ideal for lid functions, power, ring indicators, docking signals, battery measurement, etc.

• Has additional GPIO available for LEDs, switches, etc.

• Offers internal control of LCD brightness/contrast, audio, etc. as well as four 10-bit A/D channels for power management monitoring

• Provides programmable features that allow for maximum design differentiation without customization

• Cost-effective, reducing overall system costs by integrating features that would typically require multiple components

• Available in 80-pin 13 x 13 mm, 1.7mm high package to accommodate slim designs

APPLICATIONS

• Jupiter-class devices

• Professional H/PCs

• H/PCs

• Web Phones, G3 Terminals