General Description

The Z90233/Z90234 and Z90231 are the ROM and OTP versions of the eZVision 200 television controller with OSD. Based on ZiLOG’s powerful Z8 architecture, the Z90233/Z90234 and Z90231 contain 24 KB of program memory.

On-Screen Display (OSD)

Features

• Displays of up to 10 rows by 24 columns with

256 characters

• Provides character cell resolution of 14 pixels

by 18 scan lines

• Offers variable inter-row spacing from 0–15

horizontal scan lines

• Uses color palette table to program foreground

and background of character

Microcontroller Features

• Incorporates Z8® MCU core at 6 MHz

• Z90233 and Z90234 have 16K and 24K

masked ROM, respectively

• 236 bytes of system RAM

• Ten 6-bit pulse width modulators

• One 14-bit pulse width modulator

• On-chip infrared (IR) capture registers

• Four channels of 4-bit analog-to-digital converter

• 27 general-purpose I/O pins

• Provides I2C master serial communication port

• 42-pin SDIP and 44-pin PQFP packages

• Can be emulated with 124-pin PGA package

(Z90239)