MC141541P Freescale Semiconductor, Inc, MC141541P Datasheet

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MC141541P

Manufacturer Part Number
MC141541P
Description
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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MC141541P
Quantity:
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Part Number:
MC141541P
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MOTOROLA
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Enhanced 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 273 bytes display/control RAM. By storing a full
screen of data and control information, this device has the capability to carry out
‘screen–refresh’ without MCU supervision.
characters can be generated by combining two or more character blocks. There
are two different resolutions that users can choose. By changing the number of
dots per horizontal line to 320 (CGA) or 480 (EGA), 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.
enhanced version (EMOSD). Users can download their own fonts and display
them at any time once the chip is powered on. There are two ways for users to
build and store fonts. One is a conventional approach to have masked ROM
fonts. A newer approach is to store the fonts in the EPROM accessed by the
MCU and then download them into the EMOSD character RAM. With this new
technique, users have more flexibility in preparing their fonts and the effective
number of fonts is greatly increased.
REV 1
2/97
The MC141541 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
A special feature, character RAM fonts, is implemented in this MOSD
Motorola, Inc. 1997
Two Selectable Resolutions: 320 (CGA) and 480 (EGA) Dots per Line
Fully Programmable Character Array of 10 Rows by 24 Columns
273 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 (52.8 MHz Dot Clock at 480 Mode)
Programmable Vertical Height of Character to Meet Multi–Sync
Requirement
Programmable Vertical and Horizontal Positioning for Display Center
120 Characters and Graphic Symbols ROM and Eight Programmable
Character RAM
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
TN97031200
SDA(MOSI)
SCL(SCK)
ORDERING INFORMATION
V DD(A )
MC141541
V SS(A)
MC141541P
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 MC141541/D
MC141541
V SS
R
G
B
FBKG
HTONE/
PWMCK
VFLB
V DD
1

Related parts for MC141541P

MC141541P 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 1 2/97 TN97031200 MOTOROLA Motorola, Inc. 1997 Order this document by MC141541/D MC141541 P SUFFIX PLASTIC DIP CASE 648 ORDERING INFORMATION MC141541P Plastic DIP PIN ASSIGNMENT V SS( VCO DD(A ) ...

Page 2

Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

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ABSOLUTE MAXIMUM RATINGS Voltage Referenced Symbol Characteristic V DD Supply Voltage V in Input Voltage Id Current Drain per Pin Excluding V DD and V SS Operating Temperature Range Ta T stg Storage Temperature Range NOTE: Maximum ...

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PIN DESCRIPTIONS V SS(A) (Pin 1) This pin provides the signal ground to the PLL circuitry. Analog ground for PLL operation is separated from digital ground for optimal performance. VCO (Pin 2) Pin control voltage input to ...

Page 5

The bottom half of the Block Diagram contains the hard- ware functions for the entire system. It performs all the EMOSD functions such as programmable vertical length (from 16 lines to 63 lines), display clock generation (which is phase locked ...

Page 6

Figure 5. Segment Address Structure Basically, the transmission format is very similar to that for display RAM or control registers. The major difference is to replace the row and column address with segment address and line address, respectively. After the ...

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For rows with double width alphanumeric symbols, only the data contained in the even numbered columns of the memory map are shown. Odd numbered columns ...

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REGISTERS Display Register Î Î Î Î Î Î Î Î Î Î Î Î Î CCS0 Î Î Î Î Î Î Î Î Î Î Î Î Î CRADDR Bit 7 CCS0 ...

Page 9

Row 10 Coln Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î COL START ADDR ROW 10 WEN CCS1 MSB LSB COLN 7 Î Î Î Î ...

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Table 2. Resolution Setting Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Register Setting (32B) Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

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Although there are 24 character display registers that can be programmed for each row, not every programmed charac- ter can be shown on the screen in 320–dot resolution. Usual- ly only 24 characters can be shown in this resolution at ...

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Figure 14. ROM Address ($08 – $1F) MC141541 ...

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Figure 16. ROM Address ($40 – $5F) MOTOROLA ...

Page 14

... DESIGN CONSIDERATIONS Distortion Motorola’s MC141541P 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 x HFLB (depending on resolution) ...

Page 15

0.25 (0.010) MOTOROLA PACKAGE DIMENSIONS P SUFFIX PLASTIC DIP CASE 648– SEATING –T– PLANE NOTES: 1. DIMENSIONING AND ...

Page 16

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 ...

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