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PDF UPD3301-1 Data sheet ( Hoja de datos )

Número de pieza UPD3301-1
Descripción Programmable CRT Controller
Fabricantes NEC 
Logotipo NEC Logotipo



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No Preview Available ! UPD3301-1 Hoja de datos, Descripción, Manual

NEe
NEe Microcomputers, Inc.
",PD3301-1
",PD3301-2
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PROGRAMMABLE CRT CONTROLLER
DESC RIPT ION
The IlPD3301 is an LSI chip designed for use in CRT controllers. It contains a synchronous signal
generator. row buffer. and attribute memory. This CRT controller is capable of handling not only
black and white CRT. but also color CRT. The IlPD3301 provides control signals which simplify
the design of the external circuitry needed in the systems. Thus, this device is a versatile controller
that relieves the main CPU (and users) of many of the control burdens associated with imple-
menting a CRT interface.
There are 8 separate commands which the IlPD3301 will execute. Some of these commands require
multiple bytes to fully specify the operation which the processor wishes the CRT controller to
perform. The following commands ore available:
• RESET
• SET INTERRUPT MASK
• RESET INTERRUPT
• STOP DISPLAY
• READ LIGHT PEN
• RESET COUNTERS
• START DISPLAY
• LOAD CURSOR POSITION
FEATU RES
Programmable Screen and Character Format Capabilities;
-. Characters per Row (up to 80 characters/row)
- Lines per Character (up to 32 lines/character}
- Rows per Frame (up to 64 rows/frame)
- Horizontal Retrace Time
- Vertical Retrace Time
- Blinking Time
- DMA Control Mode
- Cursor Control Mode
• Three Independent Visual Field Attribute Modes such as;
- Transparent Attribute Color Mode
- Transparent Attribute Black and White Mode
- Non·Transparent Attribute Black and White Mode
• 12 Independent Field Attribute Functions such as;
- Vertical Line
- Blue
- Blinking
- Over-Line
- Red
- General Purpose
- Reverse Video
- Under-Line
- Green
- Secret
- High-Light
- General Purpose Color
• Light Pen Detection
• Maximum 256 Different Characters Control Capability
• Fully Bus Compatible with 8080
• 3 MHz Single Clock Input
• Single Power Supply. +5V N-MOS Technology
• Available in 40 pin Plastic and Ceramic Dual-In-Line Packages
PIN CONFIGURATION
VRTC
RVV
CSR
L PEN
INT
ORO
DACK
AO
RD
WR
CS
DBO
DB1
DB2
DB3
DB4
DBS
DBS
oB7
GND
1
2
3
4
S
6
7
8
9
/lPD
3301
VCC (+5V)
SLO
LCO
LC1
LC2
LC3
VSP
SL12
GPA
31 HLGT
CC7
CCs
CCs
CC4
CC3
CC2
CC1
CCo
CCLK
HRTC
VRTC
RVV
CSR
L PEN
INT
ORO
DACK
An
RD
WR
CS
DBO-7
HRTC
CCLK
CCO-7
HLGT
GPA
SL12
VSP
LCO_3
SLO
PIN NAMES
Vertical Retrace
Reverse Video
Cursor
Light Pen
Interrupt
DMA Request
DMA Acknowledge
Address Bus 0
Read
Write
Chip Select
Data Bus 0 II> 7
Horizontal Retrace
Character Clock
Character Copes 0 to 7
High-light
General Purpose Attribute
Slit Line 12
Video Suppression
Line Counter 0 to 3
Slit Line 0
II

1 page




UPD3301-1 pdf
TIMING WAVEFORMS
(CaNT.)
READ OPERATION
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471

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