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參數(shù)資料
| 型號： | PCA84C643 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-bit microcontrollers with OSD and VST(帶OSD 和 VST的8位微控制器) |
| 中文描述： | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP42 |
| 文件頁數(shù)： | 30/40頁 |
| 文件大小： | 233K |
| 代理商： | PCA84C643 |
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1996 Nov 29
30
Philips Semiconductors
Product specification
8-bit microcontrollers with OSD and VST
84C44X; 84C64X; 84C84X
12.9
Character ROM
Character ROM contains the dot character fonts.
13
×
8 dots are reserved for each character, regardless of
the dot matrix size actually selected.
The dot matrix grid is shown in Fig.28.
Philips provides a software under MS DOS environment
(IBM/PC or compatible) to help customer to design the
character font on the screen and to generate the bit pattern
HEX decimal file automatically.
Contact your local Philips Sales Organization for details.
handbook, halfpage
MCD185
1
2
3
4
5
6
7
8
13
12
10
9
1
2
3
4
5
6
7
8
11
Fig.28 Character ROM.
13 EMULATION MODE
The emulation mode configuration is shown in Fig.29.
In the emulation mode configuration the PCA84C640’s
CPU is disabled and only its derivative logic is active.
The device is controlled by the PCF84C00 bond-out chip.
The PCA84C640's two derivative ports act as additional
ports for the PCF84C00. The interaction between the two
devices is as follows:
1.
During the first machine cycle the PCF84C00 fetches
an instruction from EPROM and then decodes that
instruction.
2.
During the second machine cycle the PCF84C00
executes the decoded instruction. If the instruction is
related to the derivative ports then DXALE, DXRDN
and/or DXWRN become active and the PCA84C640
operates as a peripheral of the PCF84C00.
3.
Depending on the type of instruction executed during
the second machine cycle the following data transfer
happens:
a) During TS1 data from the EPROM is available on
P0.0 to P0.7 which is then available on IB0.0 of the
PCF84C00.
b) During TS4 data from the PCA84C640 can be
transferred to the PCF84C00.
c) During TS6 data from the PCF84C00 can be
transferred to the PCA84C640.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA84C644 | 8-bit microcontrollers with OSD and VST(帶OSD 和 VST的8位微控制器) |
| PCA84C840 | 8-bit microcontrollers with OSD and VST(帶OSD 和 VST的8位微控制器) |
| PCA84C646 | Microcontrollers for TV tuning control and OSD applications(應(yīng)用于TV調(diào)頻和OSD的微控制器) |
| PCA84C886 | Microcontrollers for TV tuning control and OSD applications(應(yīng)用于TV調(diào)頻和OSD的微控制器) |
| PCA84C922 | Microcontrollers for universal infrared remote transmitter applications(應(yīng)用于通用紅外線遙控傳送的微控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA84C644 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with OSD and VST |
| PCA84C646 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for TV tuning control and OSD applications |
| PCA84C646P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for TV tuning control and OSD applications |
| PCA84C64X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| PCA84C822 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers for remote control transmitters |
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