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)