CL-GD6420中文资料凌云逻辑数据手册PDF规格书

FEATURES

Single-chip VGA controller

Pin-compatible with the CL-GD6410 in 2-DRAM

applications

Up to 1 Mbyte (2, 4, or 8) 256K x 4 DRAM Video Memory

Extended resolution up to 1024 x 768 with 256 colors on

CRT (interlaced video with 45 MHz clock)

Simultaneous display on LCD panel and CRT

IBMâ VGA hardware-compatible

Integrates RAMDAC

Integrates LCD panel interface

— Control and data buffering

— Power sequencing logic

Direct connection to ISA (PC AT) bus up to 10 MHz

Frame-Accelerator technology for low-active power

Standby and Suspend Modes to save power

— Internal standby counter

— Software suspend or hardware standby pin

Expanded operational range: 5V ± 10

64-shade grayscale on monochrome STN LCD

— NTSC sum-to-gray color mapping

— Multiple sum-to-gray weighting options

Enhanced flicker-reduction algorithms for 4 MHz and

quick-response LCDs

Direct connection to 512-color TFT LCD panels

— Single-controller design for STN monochrome and

TFT color LCDs

Graphics expansion and compression maps CRT modes

to fixed-resolution LCD

8- or 16-bit CPU interface

Packaged in 160-pin (EIAJ-standard) QFP package

— Pinout optimized for efficient board layout