- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367732 > P87C055BBP (NXP SEMICONDUCTORS) Microcontrollers for TV and video MTV PDF資料下載
參數(shù)資料
| 型號： | P87C055BBP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Microcontrollers for TV and video MTV |
| 中文描述： | 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP42 |
| 封裝： | 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42 |
| 文件頁數(shù)： | 17/40頁 |
| 文件大?。?/td> | 243K |
| 代理商： | P87C055BBP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
1996 Mar 22
17
Philips Semiconductors
Product specification
Microcontrollers for TV and video (MTV)
83C145; 83C845
83C055; 87C055
13.1.9
S
HORT
R
OWS
This mode only displays 4 horizontal lines and is used for
generating underlines.
13.1.10 P
ROGRAMMABLE HORIZONTAL AND VERTICAL
POSITIONS
Bit pairs HS4 to HS0 and VS2 to VS0 in register OSORG
(Table 30) define the starting point of the display.
13.2
General description of the OSD module
This block is the largest of the additions that are specific to
this product. Its basic function is to superimpose text on
the television video image, to indicate various parameters
and settings of the receiver or tuner. External circuitry
handles the mixing (multiplexing) of the text and the TV
video. The OSD block has 4 input pins:
Two for a video clock: VCLK1 and VCLK2
Horizontal sync signal: HSYNC
Vertical sync signal: VSYNC.
The block has 4 outputs:
3 colour video signals
a control signal.
Since this block is the major feature of the part, its main
inputs and outputs are dedicated pins, without alternate
port bits. The OSD of the 83C055 differs from that in
preceding devices in one major way:
It does not fix the number and size of displayed rows of
text.
Several predecessor parts allowed two displayed rows of
16 characters each. The 83C055 simply has 128 locations
of Display RAM, each of which can contain:
a displayed character, or
a New Line character that indicates the end of a row.
A variant of the New Line character is used to indicate
the end of displayed data.
A number of changes in the OSD architecture have
reduced the number of other Special Function Registers
involved in the feature, below the number needed with
predecessor devices:
1.
The elimination of certain options such as 4, 6, or
8
×
character sizes and alternate use of two of the
video outputs.
2.
The moving of certain other options from central
registers to Display RAM, such as foreground colour
codes (Fcolor) and background (B) selection.
Figure 7 shows the 3 major elements of the OSD facility:
OSD logic
Display RAM
Character Generator ROM.
13.3
OSD logic
For a standard NTSC TV signal with an HSYNC frequency
of 15.750 kHz and a VSYNC frequency of nominally
60 Hz, there are roughly 50
μ
s of active horizontal scan
line available.
A typical pixel clock frequency is 8 MHz, and therefore
roughly 400 pixels of resolution can be obtained. At
14 dots per character, this means 28 character per
horizontal scan line. If the 12 dot per character display
mode is used, that means 33 character per horizontal scan
line. Allowing for edge effects, 26 characters (14 across) or
31 characters (12 across) can be displayed.
Note that VGA rates and higher can be used. The
minimum character dot size will be a function of the VGA
frequency used. For a 640
×
480 display, running at
33 kHz, the equivalent 83C055 pixel resolution is about
160 across (because of the 8 MHz clock and allowing for
overscan). This means that status and diagnostic
information can be displayed on video monitors.
13.3.1
ON
-
CHIP VIDEO OSCILLATOR
The video clock pins (VCLK1 and VCLK2) are used to
connect a LC circuit to an on-chip video oscillator that is
independent of the normal MCU clock.
The L and C values are chosen so that a video pulse, of a
duration equal to the VCLK period, will produce a
more-or-less square dot on the screen, that is, a dot having
a width approximately equal to the vertical distance
between consecutive scan lines.
The video oscillator is stopped (with VCLK2 = LOW) while:
HSYNC (Horizontal Sync) is maintained, and
is released to operate at the trailing edge of HSYNC.
This technique helps provide uniform horizontal
positioning of characters/dots from one scan line to the
next.
相關PDF資料 |
PDF描述 |
|---|---|
| P83C055BBP | Microcontrollers for TV and video MTV |
| P83C145BBP | MICRO 21 F SOD |
| P83C851FBA | CMOS single-chip 8-bit microcontroller with on-chip EEPROM |
| P80C851IBA | CMOS single-chip 8-bit microcontroller with on-chip EEPROM |
| P83C851IBP | STORAGE, SLIDES CABINET RoHS Compliant: Yes |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| P87C151SA | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:HIGH-PERFORMANCE CHMOS MICROCONTROLLER |
| P87C151SB | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:HIGH-PERFORMANCE CHMOS MICROCONTROLLER |
| P87C251SA16 | 功能描述:IC MCU 8-BIT 8K 16MHZ OTP 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 其它有關文件:STM32F101T8 View All Specifications 特色產品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉換器:A/D 10x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND |
| P87C251SB16 | 功能描述:IC MCU 8-BIT 16K 16MHZ OTP 40DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 其它有關文件:STM32F101T8 View All Specifications 特色產品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉換器:A/D 10x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND |
| P87C251SP16 | 功能描述:IC MCU 8-BIT 8K 16MHZ OTP 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 其它有關文件:STM32F101T8 View All Specifications 特色產品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉換器:A/D 10x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND |
發(fā)布緊急采購，3分鐘左右您將得到回復。