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MC141542P, MC141543, MC141544

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Info of MC141542P
Info of MC141543
Info of MC141544

MC141542P, MC141543, MC141544 Selling Leads, Datasheet

MFG:MOT Package Cooled:DIP D/C:700

MC141542P, MC141543, MC141544 Datasheet download

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Part Number: MC141542P

MFG: MOT

Package Cooled: DIP

D/C: 700

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MC141543 General Description

The MC141543 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 onchip PLL allows both multisystem operation and selfgeneration of system timing. It also minimizes the MCU's burden through its builtin 493 bytes RAM. By storing a full screen of data and control information, this device has a capability to carry out 'screenrefresh' without MCU supervision.

Since there is no spacing between characters, special graphicsoriented 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.

Special functions such as character bordering or shadowing, multilevel 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.

MC141543 Maximum Ratings

Symbol	Characteristic	Value	Unit
V_DD	Supply Voltage	0.3 to + 7.0	V
V_in	Input Voltage	V_SS 0.3 to V_DD + 0.3	V
I_d	Current Drain per Pin Excluding V_DD and V_SS	25	mA
T_a	Operating Temperature Range	0 to 85
T_stg	Storage Temperature Range	65 to + 150

NOTE: Maximum Ratings are those values beyond which damage to the device may occur. Functional operation
should be restricted to the limits in the Electrical Characteristics tables or Pin Description section.

This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher than the
maximum rated voltages to this high impedance circuit. For proper operation it is recommended that V_inand V_out
be constrained to the range V_SS 3 (V_inor V_out) 3 V_DD. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either V_SS or V_DD). Unused outputs must be left open.

MC141543 Features

• 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 WideRanged System Clock
• For HighEnd Monitor Application, Maximum Horizontal Frequency is 110 kHz (70.4 MHz Dot Clock at 640 Mode)
• Programmable Vertical Height of Character to Meet MultiSync 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
• CharacterbyCharacter 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

MC141543 Connection Diagram

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