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參數(shù)資料
| 型號： | 141540 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Monitor On-Screen Display CMOS |
| 中文描述： | 顯示器屏幕顯示的CMOS |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 186K |
| 代理商： | 141540 |
MC141540
1
MOTOROLA
CMOS
The MC141540 is a high performance HCMOS device designed to interface
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 a capability to carry out
‘screen–refresh’ without MCU supervision.
Since there is no spacing between characters, special graphics–oriented
characters can be generated by combining two or more character blocks.
Special functions such as character bordering or shadowing, multi–level
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.
Fixed Resolution: 320 (CGA) 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
100 kHz (32 MHz Dot Clock)
Programmable Vertical Height of Character to Meet Multi–Sync
Requirement
Programmable Vertical and Horizontal Positioning for Display Center
128 Characters and Graphic Symbols ROM
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
Single Positive 5 V Supply
MC141540P4 is a Replacement for XC141540P with Two Symbols Added
in ROM Addresses ‘5C’ and ‘5E’
Order this document
by MC141540/D
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENT
P SUFFIX
PLASTIC DIP
CASE 648
ORDERING INFORMATION
MC141540P4
Plastic DIP
13
14
15
16
9
10
11
12
5
4
3
2
1
8
7
6
FBKG
B
G
R
VSS
VDD
VFLB
HTONE
VDD(A)
RP
VCO
SCL(SCK)
SDA(MOSI)
SS
HFLB
VSS(A)
REV 1
2/97 TN97031200
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