MC141543P Motorola, MC141543P Datasheet

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MC141543P

Manufacturer Part Number
MC141543P
Description
Enhanced monitor on-screen display
Manufacturer
Motorola
Datasheet

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MOTOROLA
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Advanced Monitor On-Screen
Display
CMOS
with a microcontroller unit to allow colored symbols or characters to be
displayed on a color monitor. The on–chip PLL allows both multi–system
operation and self–generation of system timing. It also minimizes the MCU’s
burden through its built–in 493 bytes RAM. By storing a full screen of data and
control information, this device has a capability to carry out ‘screen–refresh’
without MCU supervision.
characters can be generated by combining two or more character blocks. There
are three different resolutions that users can choose. By changing the number
of dots per horizontal line to 320 (CGA), 480 (EGA) or 640 (VGA), smaller
characters with higher resolution can be easily achieved.
windows, double height and double width, and programmable vertical length of
character can also be incorporated. Furthermore, neither massive information
update nor extremely high data transmission rate are expected for normal on–
screen display operation, and serial protocols are implemented in lieu of any
parallel formats to achieve minimum pin count.
REV 2
2/97
The MC141543 is a high performance HCMOS device designed to interface
Since there is no spacing between characters, special graphics–oriented
Special functions such as character bordering or shadowing, multi–level
Motorola, Inc. 1997
Three Selectable Resolutions: 320 (CGA), 480 (EGA) or 640 (VGA) Dots
per Line
Fully Programmable Character Array of 15 Rows by 30 Columns
493 Bytes Direct Mapping Display RAM Architecture
Internal PLL Generates a Wide–Ranged System Clock
For High–End Monitor Application, Maximum Horizontal Frequency is
110 kHz (70.4 MHz Dot Clock at 640 Mode)
Programmable Vertical Height of Character to Meet Multi–Sync
Requirement
Programmable Vertical and Horizontal Positioning for Display Center
128 Characters and Graphic Symbols ROM (Mask ROM is Optional)
10 x 16 Dot Matrix Character
Character–by–Character Color Selection
A Maximum of Four Selectable Colors per Row
Double Character Height and Double Character Width
Character Bordering or Shadowing
Three Fully Programmable Background Windows with Overlapping
Capability
Provides a Clock Output Synchronous to the Incoming H Sync for External
PWM
M_BUS (IIC) Interface with Address $7A
Single Positive 5 V Supply
TN97022700
SDA(MOSI)
SCL(SCK)
ORDERING INFORMATION
V DD(A )
MC141543
V SS(A)
MC141543P
HFLB
VCO
RP
SS
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
Order this document
Plastic DIP
PLASTIC DIP
16
15
14
13
12
10
11
9
CASE 648
P SUFFIX
by MC141543/D
MC141543
V SS
R
G
B
FBKG
HTONE/
PWMCK
VFLB
V DD
1

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MC141543P Summary of contents

Page 1

... Provides a Clock Output Synchronous to the Incoming H Sync for External PWM M_BUS (IIC) Interface with Address $7A Single Positive 5 V Supply REV 2 2/97 TN97022700 MOTOROLA Motorola, Inc. 1997 Order this document by MC141543/D MC141543 P SUFFIX PLASTIC DIP CASE 648 ORDERING INFORMATION MC141543P Plastic DIP PIN ASSIGNMENT V SS( VCO DD(A ) ...

Page 2

... CCOLORS AND SELECT Î Î Î Î Î ROW Î Î Î Î Î CHS BUFFER Î Î Î Î Î CWS Î Î Î Î Î 6 CRADDR CRS CHARACTER ROMS 10–BIT SHIFT REGISTERS 13 CCOLORS COLOR ENCODER AND SELECT MOTOROLA ...

Page 3

... Input Voltage of Pin SDA and SCL in M_BUS Mode V IL Logic Low V IH Logic High I II High–Z Leakage Current ( and FBKG Input Current (Not Including RP, VCO FBKG and HTONE/PWMCK Supply Current (No Load on Any Output) 90% MOTOROLA Value Unit – – – 150 DD( ...

Page 4

... B,G,R (Pins 13,14,15) AMOSD color output is TTL level RGB to the host monitor. These three signals are active high output pins that are in a high–impedance state when AMOSD is disabled (Pin 16) This is the ground pin for the digital logic of the chip. MOTOROLA ...

Page 5

... Note that the OSD_EN bit must be set after all the display information has been sent, in order to activate the AMOSD circuitry of MC141543 so that the received information can be displayed. MOTOROLA DATA BYTES CHIP ADDRESS SDA ACK ...

Page 6

... WINDOW 1 WINDOW 2 WINDOW AND FRAME CONTROL REGISTERS Figure 5. Memory Map COLUMN DISPLAY REGISTERS WINDOW 3 FRAME CRTL REG MOTOROLA ...

Page 7

... COLN 2 MSB LSB Î Î Î Î Î Î Î Î Î Î Î Î MOTOROLA Bits 2– and B — These bits control the color of Win- dow 1. Window 1 occupies Columns 0–2 of Row 15; Window 2 occupies Columns 3–5; and Window 3 occupies Columns 6–8. Window 1 has the highest priority, and Window 3 the ...

Page 8

... Display character when CH=34 MOTOROLA ...

Page 9

... Bit X32B Bit X32B is 1 and Bit X64 is 0, the dot frequency will be 15.36 MHz (one and a half of the original one). If Bit X32B is 1 and Bit X64 is also 1, the dot frequency will be 20.48 MHz (double of the original one). MOTOROLA vertical delay = VERTD scan lines VFLB Ï ...

Page 10

... Speaker 07, 08 Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ROM CONTENT Figures 10 – 13 show the ROM content of MC141543. Mask ROM is optional for custom parts. MOTOROLA ...

Page 11

... Figure 10. ROM Address ($00 – $1F) MOTOROLA Figure 11. ROM Address ($20 – $3F) MC141543 11 ...

Page 12

... Figure 12. ROM Address ($40 – $5F) MC141543 12 Figure 13. ROM Address ($60 – $7F) MOTOROLA ...

Page 13

... DESIGN CONSIDERATIONS Distortion Motorola’s MC141543P has a built–in PLL for multi–sys- tem application. Pin 2 voltage is dc–based for the internal VCO in the PLL. When the input frequency (HFLB) to Pin 5 increases, the VCO frequency will increase accordingly. This forces the PLL to a higher locked frequency output. The fre- quency should be equal to 320/480/640 x HFLB (depending on resolution) ...

Page 14

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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