Daewoo DTR-14D3VG, Service Manual

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IC Description
DW90244-AS/(Z8 DIGITAL TELEVISION CONTROLLER)
= Z9024106PSC (ZILOG TYPE NO.)
(1) General Description
The Z9023X Digital Television Controller (DTC) family is ZILOG’s latest and most powerful Z8-based DTC product offering,
These parts feature larger system RAM and Rom Options, together with a host of new features including a newcolor palette
systen, flexible inter-row spacing, higher character cell resolution, background mesh effect, dedicated I. R. capture registers,
on-chip Analog-to-Digital conversion, and a hardware Master mode I
2 C interface. The famililiar Z8 core in combination with
these advanced features makes the Z9023X family an ideal choice for low to midrange televisions in both PAL and MTSC
markets.
The Z9023X family consists of three basic device types; ICE Chip (Z90239), ROM Mask Parts (Z90233/Z90234), and OTP
Part (Z90231), The OTP (Z90231) supports field programmable 32KB system ROM. ICE Chip (Z90239) is used in Z90239
Emulator and ProtoPaK. As described above, Z90233 supports 16KB system ROM and Z90234 supports 24KB system
ROM for mask.
The Z9021X family takes full advantage of the Z8’s expanded register file space to offer greater flexibility in On Screen Dis-
play creation.
(2) Feature
Z8-Based CMOS Microcontroller for Consumer Television, Cable Box, and Satellite Receiver Applications
• 42 - Pin SDIP Package except Z90239 (124 PGA)
• Z8
@
MCU Core at 6 MHz
• Mask ROM sizes Available in 16 and 24KB
• Ten 6-bit Pulse Width Modulators
• One 14-bit Pulse Width Modulator
• On-Chip Infrared (IR) Capture Registers
• Four Channel 4-bit Analog-to-Digital Converter
• Twenty Seven General Purpose I/O Pins
• I
2 C Master Serial Communication Port
On Screen Display (OSD) Section
• Supports Displays up to 10 rows by 24 Columns with 256 Characters
• Character Cell Resolution of 14 Pixels by 18 Scan lines
• Variable Inter-row Spacing from 0-15 Horizontal Scan Lines
• Foreground and Background Colors Fully Programmable by Character