MC2672 Controller Datasheet

MC2672 Datasheet PDF, Equivalent


Part Number

MC2672

Description

Programmable Video Timing Controller

Manufacture

Motorola

Total Page 27 Pages
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Download MC2672 Datasheet PDF


MC2672
.. SMEOTMOiRCOOLANDUCTOR . . . . . . . . . . . . . . . . . . . . . . . . . ..
TECHNICAL DATA
MC2672
Advance Information
Programmable Video Timing Controller
(PVTC)
The MC2672 programmable video timing controller (PVTC) is a programmable device designed
for use in CRT terminals and displays systems that employ raster scan techniques. The PVTC gener-
ates the vertical and horizontal timing signals necessary for the display of interlaced or non-inter-
laced data on a CRT monitor. It provides consecutive addressing to a user specified display buffer
memory domain and controls the CPU-display buffer interface for various buffer configuration
modes. A variety of operating modes, display formats, and timing profiles can be implemented by
programming the control registers in the PVTC. Applications include CRT terminals, word-process-
ing systems, small business computers, and home computers.
• 4 MHz Character Rate
• Up to 256 Characters Per Row
• 1 to 16 Raster Lines Per Character Row
• Up to 128 Character Rows Per Frame
• Programmable Horizontal and Vertical Sync Generators
• Interlaced or Non-Interlaced Operation
• Up to 16K RAM Addressing for Multiple Page Operation
• Automatic Wraparound of RAM
• Addressable, Incrementable, and Readable Cursor
• Programmable Cursor Size, Position, and Blink
• Split Screen and Horizontal Scroll Capability
• Light Pen Register
• Selectable Buffer Interfce Modes
• Dynamic RAM Refresh
• Completely TIL Compatible
• Single + 5-Volt Power Supply
• Power-On Reset Circuit
I
This document contains information on a new product. Specifications and information herein are subject to change without notice.
MOTOROLA MICROPROCESSOR DATA
3-1

MC2672
CE Interface
R
Vii Read/Write
Control Logic
I INTR
~
~
CClK
Address
Decoder
Clock
Buffer
MC2672
BLOCK DIAGRAM
Control
Initialization
and Display
,Registers
Command
Decode
Logic
Interrupt
Logic and
Status
Register
Display
Memory
Handshake
Logic
. CTRl1
CTRL2
CTRL3
Display
Address
Timing
Multiplexers
Cursor,
Pointer, and
Light Pen
Registers
Light Pen Strobe
Cursor and
Compare
Logic
CURSOR
Timing
Timing Chain
and
Decode Logic
HSYNC
VSYNC/CSYNC
BLANK
ABSOLUTE MAXIMUM RATINGS
Rating
Supply Voltage
Input Voltage
Operating Temperature Range
Storage Temperature Range
THERMAL CHARACTERISTICS
Characteristic
Thermal Resistance
Plastic Package
Symbol
Vce
Vin
TA
Tst9
Symbol
8JA
Value
-0,3 to + 7.0
-0,3 to + 7,0
o to 70
-55 to + 150
Unit
V
V
°e
°e
Value
50
Rating
°C/W
This device contains circuitry to pro-
tect the inputs against damage due to
high static voltages or electric fields;
however, it is advised that normal pre-
cautions be taken to avoid application
of any voltage higher than maximum-
rated voltages to this high-impedance
circuit. For proper operation it is rec-
ommended that Yin and Vout be con-
strained to the range GND~(Vin or
Vout)~VCC. Reliability of operation is
enhanced if unused inputs are tied to
an appropriate logic voltage level (e.g.,
either GND or VCC).
MOTOROLA MICROPROCESSOR DATA
3·2


Features .. SMEOTMOiRCOOLANDUCTOR . . . . . . . . . . . . . . . . . . . . . . . . . .. TECHNICAL DATA MC2672 Advance Informa tion Programmable Video Timing Controll er (PVTC) The MC2672 programmable video timing controller (PVTC) is a programm able device designed for use in CRT ter minals and displays systems that employ raster scan techniques. The PVTC gener ates the vertical and horizontal timing signals necessary for the display of i nterlaced or non-interlaced data on a C RT monitor. It provides consecutive add ressing to a user specified display buf fer memory domain and controls the CPU- display buffer interface for various bu ffer configuration modes. A variety of operating modes, display formats, and t iming profiles can be implemented by pr ogramming the control registers in the PVTC. Applications include CRT terminal s, word-processing systems, small busin ess computers, and home computers. • 4 MHz Character Rate • Up to 256 Char acters Per Row • 1 to 16 Raster Lines Per Character Row • Up to 128.
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