UPD6462 NEC, UPD6462 Datasheet

no-image

UPD6462

Manufacturer Part Number
UPD6462
Description
CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS
Manufacturer
NEC
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UPD6462
Manufacturer:
NEC
Quantity:
200
Part Number:
UPD6462
Manufacturer:
NEC
Quantity:
1 000
Part Number:
UPD6462GS-918-E1
Manufacturer:
NEC
Quantity:
20 000
Document No. S13320EJ1V1DS00 (1st edition)
Date Published November 1998 N CP(K)
Printed in Japan
combined with a microcontroller, the PD6461, 6462 control the display of the characters displayed in the viewfinder (count,
time, date, etc.) and the recording of characters onto video tape (time, date, etc.).
by using two or more characters. The PD6461, 6462 are compatible with color viewfinders and can output character signals
to three channels, the RGB channel for the color viewfinder and the V
monitor terminal.
of operations assigned to the microcontroller to be reduced.
FEATURES
• Maximum number of characters: 12 rows
• Number of character patterns : 256 ( PD6461)/128 ( PD6462) (stored in ROM). Each pattern can be changed by
• Character size
• Number of character colors
• Background
• Dot matrix
• Blinking
• Reversed characters
• Character signal output
• Clearing of video RAM
• Interface with a microcontroller : 8-bit serial input supporting variable word length (LSB first or MSB first can be selected
• Supply voltage
The PD6461, 6462 are CMOS LSI chips designed to provide on-screen character display for camcorders. When
Each character is created using 12 (width) 18 (height) dots. Kanji characters and graphic symbols can also be displayed
The PD6461, 6462 also have a power-on clear function and video RAM batch clear command, enabling the number
CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY
The information in this document is subject to change without notice.
: One dot per line or one dot per two lines (field)
: 8
: No background, minimum background, or overall background can be selected for the
: Each character consists of 12 (width)
: Blinking can be turned on/off for each character. The blinking ratio is 1:1. The blinking
: Specified characters can be displayed in reverse video.
: Character signals can be output to three channels. Output mode (1) (RGB + BLK, V
: Video RAM batch clear command and power-on clear function
: Low-voltage operation possible (supply voltage range: 2.7 to 5.5 V)
specifying a mask code option.
entire screen, together with rimming ON/OFF function. Any one of 8 different colors
is selectable as the background color and together with the rim color (black or white)
selectable per screen.
adjacent characters.
frequency can be selected from approx. 1 Hz, 2 Hz, and 0.5 Hz for the entire screen.
+ V
be selected by specifying a mask option. For output mode 1, three output formats are
available for the V
by specifying a mask option.)
(12 ROWS
BLK1
The mark
, and V
24 columns (288 characters)
DATA SHEET
C2
shows major revised points.
+ V
C1
BLK2
and V
24 COLUMNS)
) or output mode (2) (R + R
C2
channels (options A, B, and C).
MOS INTEGRATED CIRCUIT
C1
and V
PD6461, 6462
18 (height) dots. There is no gap between
C2
channels for the recording system and
BLK
, B + B
BLK
, and G + G
©
BLK
) can
C1
1998

Related parts for UPD6462

UPD6462 Summary of contents

Page 1

CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY The PD6461, 6462 are CMOS LSI chips designed to provide on-screen character display for camcorders. When combined with a microcontroller, the PD6461, 6462 control the display of the characters displayed in the ...

Page 2

... ORDERING INFORMATION Part number PD6461GS-xxx PD6461GT-xxx PD6462GS-xxx Remarks 1. xxx is a ROM code suffix. 2. NEC’s standard models are the character generator ROM, refer to 5. CHARACTER PATTERNS. PD6461GS-101: MSB first/Specified in three-line units/RGB+3BLK/Option B/LC oscillation PD6461GS-102: MSB first/Specified in three-line units/RGB+V PD6462GS-001: MSB first/Specified in three-line units/RGB+V 2 ...

Page 3

DATA Data input shift register CLK CS Character size register CK Horizontal size OUT counter OSC IN Oscil- lator OSC OUT Synchro- Hsync nization Vertical size protection counter circuit Vsync Remark Signals are set by a mask ...

Page 4

PIN CONFIGURATION (TOP VIEW) 20-pin plastic shrink SOP (300 mil) PD6461GS-xxx PD6462GS-xxx CLK CS DATA PCL OUT OSC OUT OSC IN TEST GND 24-pin plastic SOP (375 mil) PD6461GT-xxx CLK CS N.C. DATA PCL ...

Page 5

... BLK1, BLK2: Blanking Output Clock Output OUT CLK : Clock Input CS : Chip Select DATA : Data Input G : Blanking G BLK GND : Ground Hsync : Horizontal Synchronous Signal Input N. Connection OSC : Oscillator Input IN OSC : Oscillator Output OUT PCL : Power-on Clear R : Blanking R BLK TEST : Test V : Character Signal Output B V ...

Page 6

... OSC pin open.) OUT Pin used for testing the IC. Usually, connect this pin to ground. The IC cannot enter test mode while this pin is connected to ground. Connect this pin to the system ground. Pin used to output the blanking signal for the video signal output from the V pin ...

Page 7

MASK CODE OPTIONS ........................................................................................................................... 8 1.1 MASK CODE OPTIONS .................................................................................................................................. 1.2 HOW TO SELECT MASK OPTIONS ............................................................................................................. 1.3 APPLICATION BLOCK DIAGRAMS .............................................................................................................. 10 1.4 DISPLAY IN RGB 1.4.1 Character Signal Output When Option A is Selected ...

Page 8

MASK CODE OPTIONS 1.1 MASK CODE OPTIONS The PD6461, PD6462 provide mask options for selecting the following items: Item (1) Data transfer Vertical display start position (2) Pin selection (3) Output distribution format (4) Dot clock (5) (1) Data ...

Page 9

HOW TO SELECT MASK OPTIONS To select mask options, use the option setting command (OC) of the Character Pattern Editor, a tool designed for editing character pattern data. Activate the Character Pattern Editor, then display the following setting menu: ...

Page 10

APPLICATION BLOCK DIAGRAMS Example of application to a camcorder (1) (in RGB+V (The BLK1 BLK C1 DATA CLK CS PCL RGB channel PD6461, 6462 V ...

Page 11

DISPLAY IN RGB+V +V MODE C1 C2 The PD6461, 6462 provide three options and C, for the output distribution format. This section describes how character signals are output when each option is selected. Output is controlled with ...

Page 12

Option A output Output pin control bits V V Output from each pin Outputs the specified row Fixed to low level Output channel For case V ...

Page 13

Option C output Output pin control bits V V Output from each pin Outputs columns Outputs columns ...

Page 14

Character Signal Output When Option A is Selected Option A The V bit of the output pin control command can be used to specify whether the characters of each row are output to C1 the V channel. Each character ...

Page 15

Character Signal Output When Option B is Selected Option B The V channel outputs characters of all rows regardless of setting of the V C1 specified to be output to the V channel, and the V C2 for which ...

Page 16

Character Signal Output When Option C is Selected Option C The V and V bits of the output pin control command can be used to specify whether the characters in columns each row ...

Page 17

Display of V -Specified Characters C2 When the displayed character control command specifies the V to the RGB or V channel (display for the RGB and background display (overall/minimum) is specified for the RGB or V ...

Page 18

OUTPUTTING BACKGROUND The figures below show the screen display when minimum background or overall background is specified for each output channel in RGB+V +V mode (1) Minimum background RGB channel YOKOHAMA 1991. ...

Page 19

COMMANDS 2.1 COMMAND FORMAT Control commands are serially input in 8-bit units with a variable word length. There are three types of commands: 1- byte commands consisting of eight bits including an instruction and data, 2-byte commands consisting of ...

Page 20

For LSB first 1-byte commands Function Video RAM batch clear Character display control Background/rim color control 3-channel independent display on/off Character reverse on/off 2-byte commands Function Character display position control Write address control Output pin control Character size control ...

Page 21

... POWER-ON CLEAR FUNCTION The internal state of the IC is unstable immediately after the power is turned on therefore necessary to keep the PCL pin low for the time shown below to allow the system to initialize. This power-on clear places the system in the following state: • Test mode is not specified. ...

Page 22

... Time required to clear video RAM = 10 12/f A dot clock input (to the OSC pin) is necessary to clear the video RAM. Input a dot clock when external clock input IN is selected. Remark Power-on clear using the PCL pin is hardware reset, initializing the IC, including clearing the video RAM and releasing test mode ...

Page 23

CHARACTER DISPLAY CONTROL COMMAND This command turns on/off character display, LC oscillation, and the blinking of characters. (1) For MSB-first transfer (Command bits are input starting from the MSB (D7).) (MSB ...

Page 24

BACKGROUND/RIM COLOR CONTROL COMMAND This command specifies the color of the background or rim when overall background, minimum background, or rimming is specified. (1) For MSB-first transfer (Command bits are input starting from the MSB (D7).) (MSB ...

Page 25

INDEPENDENT DISPLAY ON/OFF COMMAND This command turns character display on or off independently for each of the three channels. (1) For MSB-first transfer (Command bits are input starting from the MSB (D7).) (MSB ...

Page 26

CHARACTER REVERSE ON/OFF COMMAND This command specifies whether all characters displayed on the screen are reversed. (1) For MSB-first transfer (Command bits are input starting from the MSB (D7).) (MSB (2) ...

Page 27

Rimming of reversed character For an ordinary character When not reversed Character color For a solid character (character pattern 18H ( PD6461)/1FH ( PD6462): Refer to 5. CHARACTER PATTERNS) When not reversed Character color Display-off data does not change ...

Page 28

CHARACTER DISPLAY POSITION CONTROL COMMAND This command specifies the character display start position with one of 32 steps in 12-dot units for the horizontal direction, and one of 32 steps in three-line units for the vertical direction (this command ...

Page 29

Control bits for the horizontal display start position These bits are used to specify the horizontal display start position (timing) as one of 32 steps in units of 12 dots (12/f (MHz)). Settable positions are based on the rising ...

Page 30

WRITE ADDRESS CONTROL COMMAND This command specifies the address at which a character is written in the display area (video RAM rows 24 columns (this command is a 2-byte command, requiring 16 bits for each command, even ...

Page 31

OUTPUT PIN CONTROL COMMAND This command distributes character signals to the V 16 bits for each command, even when continuously input). The PD6461, 6462 support a mask option for selecting one of three formats for the output distribution format ...

Page 32

CHARACTER SIZE CONTROL COMMAND This command specifies the character size (height and width at one time) for each row (this command is a 2-byte command, requiring 16 bits for each command, even when continuously input). (1) For MSB-first transfer ...

Page 33

INDEPENDENT BACKGROUND CONTROL COMMAND This command specifies the background for each of the three output channels (this command is a 2-byte command, requiring 16 bits for each command, even when continuously input). (1) For MSB-first transfer (Command bits ...

Page 34

Rimming control bit This bit is used to specify whether all characters displayed on the screen are rimmed. Rimming: Whenever there is a dot at the right or left edge of the display area for a character, rimming of ...

Page 35

... TEST MODE COMMAND This command is used only to test the IC. Usually, do not input this command. The system cannot enter test mode while the TEST pin (pin 9) is connected to ground. (1) For MSB-first transfer (Command bits are input starting from the MSB (D15).) (MSB) ...

Page 36

For MSB-first transfer (Command bits are input starting from the MSB (D15).) (MSB) D15 D14 D13 D12 D11 Note Note C7 bit is “don’t ...

Page 37

For LSB-first transfer (Command bits are input starting from the LSB (D0). The function of each bit is the same as that for MSB-first transfer.) (LSB ...

Page 38

COMMAND TRANSFER 4.1 1-BYTE COMMANDS DATA DATA CLK CS 4.2 2-BYTE COMMANDS First byte DATA D15 - D8 First byte DATA CLK CS When inputting a 2-byte command, keep the ...

Page 39

... D7-D0 D7-D0 D7-D0 (D8-D15) (D8-D15) (D0-D7) 00H-FEH ( PD6461) FFH ( PD6461)/ 00H-7EH ( PD6462) 7FH ( PD6462) (normal character) (2-byte successive command end code not necessary to make CS low and then back high again. PD6461, 6462 MSB first (LSB first) MSB first (LSB first) 39 ...

Page 40

... The character patterns of the PD6461GS-101/102, following pages. 40 Display of character area in each background mode No background Minimum background Displays background. Displays image only (without background). PD6462GS-001 (NEC’s standard model) are shown on the PD6461, 6462 Overall background Displays background. Displays image only (without background). ...

Page 41

PD6461GS-101/102 Character Patterns 00H 01H 02H 08H 09H 0AH 10H 11H 12H 18H 19H 1AH 20H 21H 22H 28H 29H 2AH 03H 04H 05H 0BH 0CH 0DH 13H 14H 15H 1BH 1CH 1DH 23H 24H 25H 2BH 2CH 2DH PD6461, ...

Page 42

PD6461, 6462 36H ...

Page 43

PD6461, 6462 66H 67H ...

Page 44

A0H A1H A2H A8H A9H AAH B0H B1H B2H B8H B9H BAH 44 93H 94H 95H 9BH 9CH 9DH A3H A4H A5H ABH ACH ADH B3H B4H B5H BBH BCH BDH PD6461, 6462 96H ...

Page 45

C0H C1H C2H C8H C9H CAH D0H D1H D2H D8H D9H DAH E0H E1H E2H E8H E9H EAH C3H C4H C5H CBH CCH CDH D3H D4H D5H DBH DCH DDH E3H E4H E5H EBH ECH EDH PD6461, 6462 C6H C7H ...

Page 46

F0H F1H F2H F8H F9H FAH Notes 1. Blank data 2. Display-off data (fixed at this address) 3. End code for second-byte continuous input (fixed at this address) 46 F3H F4H F5H Note 1 FBH FCH FDH PD6461, 6462 F6H ...

Page 47

PD6462GS-001 Character Patterns 00H 01H 02H 08H 09H 0AH Note 1 10H 11H 12H 18H 19H 1AH 20H 21H 22H 28H 29H 2AH 03H 04H 05H 0BH 0CH 0DH 13H 14H 15H 1BH 1CH 1DH 23H 24H 25H 2BH 2CH ...

Page 48

PD6461, 6462 36H ...

Page 49

Notes 1. Blank data 2. Display-off data (fixed at this address) 3. End code for second-byte continuous input (fixed at this address) 63H 64H 65H 6BH 6CH 6DH ...

Page 50

ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS Parameter Supply voltage Input pin voltage Output pin voltage Operating ambient temperature Storage temperature Permissible package power dissipation (T A Output current Caution Exposure to Absolute Maximum Ratings for extended periods may affect device ...

Page 51

RECOMMENDED OPERATING TIMINGS (T Parameter Setup time Hold time Minimum low level width of clock Minimum high level width of clock Clock cycle CS setup time CS hold time Delay from CLK to CS Minimum low level width of Hsync ...

Page 52

POWER-ON CLEAR SPECIFICATIONS Parameter PCL pin low level hold time V DD PCL EXTERNAL CLOCK INPUT Timing for external clock input (valid when selected with mask option) Hsync External clock Parameter Time from external clock fall to synchro- nizing signal ...

Page 53

CHARACTER AND BLK SIGNAL OUTPUT Character and BLK signals are output in synchronization with the falling edges of the dot clock. Dot clock Character signal BLK signal OUTPUT TIMINGS (T = –20 to +75˚C, pins Parameter Symbol Output ...

Page 54

... IN 4. Signals are set by a mask option (RGB + RGB compatible blanking). Remarks 1. The number in the parentheses indicates the pin number of the PD6461GT-xxx. 2. With the PD6461GT-xxx, influence by noise via lead frame can be surpressed by connecting the N.C. pins (3, 12, 13, 22) to GND. 54 PD6461GS/GT, PD6462GS 1 (1) ...

Page 55

PACKAGE DRAWINGS 20 PIN PLASTIC SHRINK SOP (300 mil NOTE 1. Controlling dimension millimeter. 2. Each lead centerline is located within 0.12 mm (0.005 inch) of its true position ...

Page 56

PIN PLASTIC SOP (375 mil NOTE 1. Controlling dimention millimeter. 2. Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material ...

Page 57

RECOMMENDED SOLDERING CONDITIONS When soldering these products highly recommended to observe the conditions as shown below. If other soldering processes are used the soldering is performed under different conditions, please make sure to consult with ...

Page 58

PD6461, 6462 ...

Page 59

... Similar precautions need to be taken for PW boards with semiconductor devices on it. 2 HANDLING OF UNUSED INPUT PINS FOR CMOS Note: No connection for CMOS device inputs can be cause of malfunction connection is provided to the input pins possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices ...

Page 60

... Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance ...

Related keywords