D6461 NEC Electronics Inc., D6461 Datasheet

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D6461

Manufacturer Part Number
D6461
Description
CMOS LSI CHIP FOR Camcorder On-screen Character Display 12 ROWS x 24 Columns
Manufacturer
NEC Electronics Inc.
Datasheet

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D6461-101
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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 D6461

D6461 Summary of contents

Page 1

... 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 : One dot per line or one dot per two lines (field) • Number of character colors : 8 • ...

Page 2

... 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 Package 20-pin plastic shrink SOP (300 mil) ...

Page 3

... Horizontal Horizontal address 288 position counter counter words Vertical address Character register for generator ROM display position 12 18 bits 256 words ( PD6461) / 128 words ( PD6462) Vertical position Vertical address counter counter TEST V DD GND PCL Video RAM Back- Display ...

Page 4

... BLK2 ( BLK1 1 24 Hsync 2 23 Vsync BLK2 ( BLK1 12 13 N.C. PD6461, 6462 BLK BLK ( BLK ) BLK BLK BLK ( BLK ) BLK C1 ...

Page 5

... PCL : Power-on Clear R : Blanking R BLK TEST : Test V : Character Signal Output Blanking Signal Output for V BLK Character Signal Output Power Supply Character Signal Output Character Signal Output R Vsync : Vertical Synchronous Signal Input , PD6461, 6462 5 ...

Page 6

... V pin. The blanking signal is high active.) Pins used to output high-active character signals. Input a low-active vertical synchronizing signal to this pin. Input a low-active horizontal synchronizing signal to this pin. Vacant pin ) are that of the PD6461GT-xxx. PD6461, 6462 Description pin. Leave the IN C1 ...

Page 7

... COMMANDS ...................................................................................................................................... 38 4.2 2-BYTE COMMANDS ...................................................................................................................................... 38 4.3 2-BYTE CONTINUOUS COMMAND .............................................................................................................. 38 4.4 CONTINUOUS INPUT OF COMMAND .......................................................................................................... 39 4.4.1 When End Code is Not Used ............................................................................................................. 39 4.4.2 When End Code is Used .................................................................................................................... 39 5. CHARACTER PATTERNS ....................................................................................................................... 40 6. ELECTRICAL CHARACTERISTICS ....................................................................................................... 50 7. APPLICATION CIRCUIT EXAMPLE ....................................................................................................... 54 8. PACKAGE DRAWINGS ........................................................................................................................... 55 9. RECOMMENDED SOLDERING CONDITIONS .................................................................................... 57 CONTENTS MODE ................................................................................................................ 11 PD6461, 6462 ...

Page 8

... Other information, however, need only be displayed in the viewfinder (battery or focus alarm and tape count). The PD6461, 6462 can distribute such information to different output channels in units of rows or half rows. You can select option A, option B, and option C as the output distribution format (only when ...

Page 9

... The command bits are set as follows Command OD displays 6AH ......... ( ......... ( ......... ( ......... ( ......... ( ......... ( ......... (7) +V mode has been selected. Select option A (1, 0) when RGB+3BLK mode (6) (7) Bit Command PD6461, 6462 9 ...

Page 10

... Hsync Vsync Character addition circuit Image Character addition circuit Image + characters Character addition circuit R channel channel BLK PD6461, 6462 Color viewfinder Recording system (deck) Monitor terminal (video signal output) channel BLK1 V channel BLK2 Color viewfinder Recording system ...

Page 11

... 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 the output pin control command (refer to 3.8 OUTPUT PIN CONTROL COMMAND for details). ...

Page 12

... V B channel has C2 channel Outputs a background signal for those areas for C2 which the V PD6461, 6462 Background signal (if specified) channel has been specified. C2 channel has been specified. C2 channel has been specified. C2 channel has been specified. ...

Page 13

... C1 Background signals are output separately as listed above. In addition, the PD6461, 6462, when set to RGB+V • Independent on/off control of character display for each channel (3-channel independent display on/off command) • Independent control of the background for each channel (3-channel independent background control command) : Fixed to low level ...

Page 14

... V channel • The specified. • Rows for which the V bit is set are not output (the V pin is fixed to C1 low level). PD6461, 6462 channel outputs only C1 channel C2 Characters output via V channel C2 YOKOHAMA BAY BRIDGE AM 11:30 1991. 2.22 bit is set to 0 ...

Page 15

... The V C1 characters of all rows regardless of the setting of the V bit, excluding C1 the characters for which the V C2 channel is specified. • The V PD6461, 6462 and V bits. Each character can be C2 channel in the rows C2 channel. C1 Characters output via V channel C2 ...

Page 16

... C1 the rows for which the V bit is set are not output (the V pin is C1 fixed to low level), excluding the characters for which the V channel C2 specified. PD6461, 6462 channel. C2 channel C2 (specified characters) YOKOHAMA BAY BRIDGE AM 11:30 1991. 2.22 bit to 0, the C1 V ...

Page 17

... The case of an area at the right edge is similar). Encroachment of rim or background (with a width of one dot for the minimum character size) Encroachment of rim Encroachment of background (1) – (5) Background does not encroach into the V PD6461, 6462 Note ). 18 dots are filled , or V channel C1 C2 ...

Page 18

... No background for V -specified areas C2 +V mode), for example, by applying background (overall/minimum) for C1 C2 -specified areas for the RGB PD6461, 6462 output (character signal) output (background signal 0000 Background only for V -specified areas C2 output (character signal) output (background signal) ...

Page 19

... BA1 BA0 BFA BB1 BB0 BFB BC1 BC0 BFC (MSB) D15 D14 D13 D12 D11 D10 PD6461, 6462 BL1 BL0 B BFC DOB DOC 0 BCRE ...

Page 20

... PD6461, 6462 D10 D11 D12 D13 D14 D15 AC0 AC1 AC2 AC3 AR4 AR0 AR1 AR2 AR0 AR1 AR2 AR3 ...

Page 21

... Note Refer to POWER-ON CLEAR SPECIFICATIONS in 6. ELECTRICAL CHARACTERISTICS. A dot clock input (to the OSC pin) is necessary to clear video RAM. Input a dot clock when an external clock input is IN selected. and V bits are set to 0 Note + {Time required for clearing video RAM} (MHz) 288} OSC PD6461, 6462 PD6461/7EH: PD6462)) and 21 ...

Page 22

... The video RAM batch clear command, in contrast, performs software reset by initializing the IC without first releasing test mode. 22 (LSB columns) is cleared (to display-off data (FEH: and V bits are set to 0 (MHz) OSC f (MHz oscillation frequency or external clock frequency OSC PD6461, 6462 PD6461/7EH: 288 ...

Page 23

... Character display on/off control bit (MSB PD6461, 6462 Blinking control bits BL0 Function 0 Turns off blinking. 1 Turns blinking. 0 Turns blinking. 1 Turns on 0.5 Hz blinking. LC oscillation control bit Function Turns off LC oscillator. Turns on LC oscillator. ...

Page 24

... Background color specification bits (MSB channel, the rim color is always black PD6461, 6462 Rim color specification bit Color Black White G B Color 0 0 Black 0 1 Blue 1 0 Green 1 1 Cyan 0 0 Red ...

Page 25

... Turns off display for V DOC 1 Turns on display for V Control bits 0 Turns off character display (for all channels). DOA 1 Turns on character display (for all channels). DOB – Don't care DOC – Don't care (MSB PD6461, 6462 Function channel. C1 channel. C1 channel. C2 channel. C2 Function 25 ...

Page 26

... channel, the display is as follows channel (uppercase letter “I” When reversed PD6461, 6462 Function 0 Does not reverse characters. 1 Reverses characters. Character color when not reversed Black Character color when not reversed: White ...

Page 27

... 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 when reversed. When blank data is reversed, it becomes a solid character for which the character color is initially set ...

Page 28

... Remarks 1. H: Line shows when units of nine lines are selected by specifying a mask option D10 PD6461, 6462 (LSB Start position ( 1)/f (MHz) from rising OSC 0 edge of Hsync ( 2)/f (MHz) from rising ...

Page 29

... H4+2 H3+2 H2+2 H1+2 f (MHz) OSC oscillation frequency or external input clock frequency H : Line OSC (MHz): LC oscillation frequency or external input clock frequency). OSC Horizontal synchronizing signal (Hsync) Display area of 12 rows x 24 columns 4 0 H0+ (MHz) OSC PD6461, 6462 29 ...

Page 30

... Any other value is invalid D10 AC0 AC1 AC2 PD6461, 6462 (LSB AC4 AC3 AC2 AC1 AC0 Column Column 0 Column 1 Column 23 Row address specification bits Row Row 0 Row 1 Row 11 (MSB) D11 D12 ...

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 for the V (1) For MSB-first transfer (Command bits are input starting from the MSB (D15).) ...

Page 32

... Height: One dot per line. Width: One dot per 1t (minimum dot). Height: One dot per two lines. Width: One dot per 2t D10 AR0 AR1 AR2 PD6461, 6462 (LSB AR3 AR2 AR1 AR0 Row Row 0 Row 1 ...

Page 33

... Background control bits for RGB channel RGB output BA1 Rimming control bit for RGB channel D10 BFC BC0 BC1 PD6461, 6462 (LSB BB0 BFB BC1 BC0 BFC channel C2 BC0 Background 0 No background 1 Minimum background ...

Page 34

... OR of the R, G, and B outputs.). Character dots Rim +V mode C1 C2 -specified character areas for the RGB and V channels are invalid (In RGB+3BLK mode, no pin outputs a signal for C1 C2 PD6461, 6462 channel, no background C1 channel, a background is added only C2 +V MODE and 1.4.4 Display channel.) C1 ...

Page 35

... D10 D10 Row address incremented PD6461, 6462 (LSB (MSB) D11 D12 D13 D14 D15 ...

Page 36

... Function Outputs pattern at address 00H. Outputs pattern at address 01H. FEH ( PD6461)/7EH ( PD6462) (display-off data). FFH ( PD6461)/7FH ( PD6462) (Indicates the end of second-byte continuous input.) V channel specification bit C2 V Function C2 Does not specify output channel Specifies output to V channel ...

Page 37

... C2 • Character pattern specification bits These bits are used to specify the address of the character pattern to be used. Address FEH ( PD6461)/7EH ( PD6462) indicates display-off data and address FFH ( PD6461)/7FH ( PD6462) indicates the end code for second- byte continuous input. The design of each character pattern can be modified by specifying a mask code option (except for addresses FEH and FFH ( PD6461)/7EH and 7FH ( PD6462)). • ...

Page 38

... Second byte LSB first First byte D15 Second byte D15 Second byte Second byte Second byte Second byte D8 - D15 D8 - D15 channel are the same, transfer the first byte of the first C2 PD6461, 6462 MSB first LSB first ...

Page 39

... CONTINUOUS INPUT OF COMMAND Transfer each of the 1-byte, 2-byte, and 2-byte successive commands from a microcontroller to the PD6461, 6462 as follows. To transfer a 1-byte or 2-byte command 2-byte successive command with blinking data changed after a 2- byte successive command has been transferred, either make CS high once, or transfer 2-byte successive command ...

Page 40

... You cannot specify display-off data for addresses other than FEH ( PD6461)/7EH ( PD6462) when using a mask code option. Blank data, however, can be specified at any address from 00H to FDH ( PD6461)/00H to 7DH ( PD6462) (address FFH ( PD6461)/7FH ( PD6462) cannot be used because it contains the end code for second-byte continuous input). ...

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, 6462 ...

Page 42

... PD6461, 6462 36H 37H 3EH 3FH 46H 47H 4EH 4FH 56H 57H 5EH 5FH ...

Page 43

... PD6461, 6462 66H 67H 6EH 6FH 76H 77H 7EH 7FH 86H 87H 8EH 8FH 43 ...

Page 44

... 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 97H 9EH 9FH A6H A7H AEH AFH B6H B7H BEH BFH ...

Page 45

... 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 CEH CFH D6H D7H DEH DFH E6H E7H EEH EFH 45 ...

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 F7H Note 2 Note 3 FEH FFH ...

Page 47

... PD6461, 6462 06H 07H 0EH 0FH 16H 17H 1EH 1FH 26H 27H 2EH 2FH 47 ...

Page 48

... PD6461, 6462 36H 37H 3EH 3FH 46H 47H 4EH 4FH 56H 57H 5EH 5FH ...

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 73H 74H 75H 7BH 7CH 7DH PD6461, 6462 66H 67H 6EH 6FH 76H 77H Note 2 Note 3 7EH 7FH 49 ...

Page 50

... Signal output low level voltage Oscillation output low level voltage Remark Signal input : DATA, CLK, CS, PCL, Hsync, Vsync Signal output OUT ( ) : Set by a mask option 50 Symbol PD6461GS, 6462GS – 0 – 0 OUT T – + – +125 ...

Page 51

... 2 Symbol Conditions t SET t HOLD t CKL t CKH t TCK t CSS t CSH t DCKCS t HWL t VWL t HOLD CKH 10 % HWL 10 % VWL PD6461, 6462 Min. Typ. Max. Unit 200 ns 200 ns 400 ns 400 ns 1.0 s 400 ns 400 ns 400 DCKCS CSH 51 ...

Page 52

... When using an external clock, leave the OSC 52 Symbol Conditions t PCLL 0 PCLL 0. C-H H Symbol Conditions t C pin open. OUT PD6461, 6462 Min. Typ. Max. Unit Min. Typ. Max. Unit Note ...

Page 53

... V, output load capacity = DTW V = 2.7 to 3.3 V, output load capacity = OSC Symbol Conditions T1 For all commands T2 For VRAM write When display is turned on commands When display is turned off Hi-Z T1 PD6461, 6462 CUS CDS BLK2 BLK BLK BLK Min. Typ. Max. Unit ...

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

... M NOTE 1. Controlling dimension millimeter. 2. Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material condition. 11 detail of lead end ITEM PD6461, 6462 MILLIMETERS INCHES 0.264 +0.012 A 6.7±0.3 –0.013 B 0.575 MAX. 0.023 MAX. C 0.65 (T.P.) 0.026 (T.P.) +0 ...

Page 56

... ITEM MILLIMETERS PD6461, 6462 INCHES +0.41 +0.017 15.3 0.602 –0.2 –0.008 0.87 MAX. 0.035 MAX. 1.27 (T.P.) 0.050 (T.P.) +0.08 +0.003 0.42 0.017 –0.07 –0.004 0.125±0.075 0.005±0.003 2.9 MAX. ...

Page 57

... For more details, refer to our document “SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL” (C10535E). Surface Mount Devices PD6461GS-xxx: 20-pin plastic shrink SOP (300 mil) PD6461GT-xxx: 24-pin plastic SOP (375 mil) PD6462GS-xxx: 20-pin plastic shrink SOP (300 mil) Process Infrared ray reflow ...

Page 58

... PD6461, 6462 ...

Page 59

... Hence, power-on does not guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized until the reset signal is received. Reset operation must be executed imme- diately after power-on for devices having reset function. PD6461, 6462 All test and measurement tools or GND with a DD ...

Page 60

... 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. Anti-radioactive design is not implemented in this product. PD6461, 6462 M4 96.5 ...

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