[Weltrend Semiconductor, Inc.]

GENERAL DESCRIPTION
The WT6248 is a microcontroller for digital controlled monitor with Universal Serial Bus (USB) interface. It contains an 8-bit CPU, 48K bytes ROM, 1056 bytes RAM, 14 PWMs, parallel I/Os, SYNC signal processor, timer, DDC1/2B interface, master/slave I2C interface, low speed USB device module, 6-bit A/D converter and watch-dog timer.

FEATURES
• 8-bit 6502 compatible CPU with 6MHz operating frequency
• 48K bytes ROM, 1024 bytes SRAM+32 bytes bit-addressable SRAM
• 12MHz crystal oscillator
• 14 channels 8-bit PWM outputs
• Sync signal processor with H+V separation, H/V frequency counter, H/V polarity detection/control and clamp pulse output
• Six free-running sync signal outputs (Horizontal frequency up to 106KHz 85Hz@1600x1200)
• Self-test pattern
• DDC1/2B module for EDID1.3, EDID2.0 and Enhance EDID
• Fast mode master/slave I2C interface (up to 400KHz)
• Embedded USB function with endpoint 0 and endpoint 1
• Built-in 3.3V regulator for USB transceiver
• Watch-dog timer
• Maximum 28 programmable I/O pins
• One 8-bit programmable timer
• 6-bit A/D converter with 4 selectable inputs
• One external interrupt request input
• Low VDD reset