Renesas HD6445CP4

Overview

The HD6345/HD6445CP4 CRTC-II provides an interface between MPU and a raster scan CRT display. The HD6345 is upward-compat- ible with the NMOS CRTC HD6845S in pin and software, and has a 68 system bus inter-face. The HD6445CP4 has a 80 system bus inter-face.A power dissipation is lowered by adopting the CMOS process. The CRTC-II offers a variety of functions under MPU control, such as programmable timing signal outputs for CRT monitor and display screen control operation. It can bewidely applied to the various types of CRT display systems.

80 system bus interface (HD6445) · Three-state control of memory address and raster address · External synchronization in Master-slave or TV syne modes · Interrupt request by vertical blanking or light pen strobe detection · Programmable timing signal for dual-port RAM in MPRAM mode

Features