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參數資料
| 型號： | PSD301L |
| 英文描述： | Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個可編程I/O,通用PLD有12個輸入) |
| 中文描述： | 現(xiàn)場可編程微控制器外圍設備（可編程邏輯，16K的位的SRAM，19余個可編程輸入/輸出，通用PLD的有12個輸入） |
| 文件頁數： | 8/23頁 |
| 文件大?。?/td> | 118K |
| 代理商： | PSD301L |
3-26
Flash Memory – Application Note 048
DPLD Equations
rs0
= (address > =
^
h0800) & (address < =
^
h0FFF);
es0
= (address > =
^
h0000) & (address < =
^
h1FFF);
es1
= (address > =
^
h2000) & (address < =
^
h3FFF);
csiop = (address > =
^
h0000) & (address < =
^
h00FF);
GPLD Equations
Flash_A16
Flash_A15
Flash_OE
Flash_WR
Flash_CS
= a15 & ((page = = 1) # (page = = 2));
= a15 & ((page = = 0) # (page = = 2));
= !((!program & !psen) # (program & !rd));
= !(program & !wr);
= !((address > =
^
h4000) & (address < =
^
hFFFF));
Table 3. Logic Equations for the PSD411/511
80C31 Example
(cont.)
By using the PSD device as a Flash Memory support chip, the design is simplified into three
chips. This solution does not require the programming algorithms to be moved into SRAM
and executed from there. By having a separate Boot EPROM, the design is easier to
complete and debug. The boot code and programming algorithms are in a secure EPROM
technology thus preventing any possibility of the boot sector being corrupted. Any pin
compatible Flash Memory can be used without any design change or impact to production.
This solution allows a blank Flash Memory to be assembled on the board. By integrating the
boot EPROM, PLD logic, and Address Latch into one device, the overall system cost
including the impacts on production can be dramatically reduced.
Conclusion
相關PDF資料 |
PDF描述 |
|---|---|
| PSD302R | Field Programmable Microcontroller Peripherals(可編程邏輯,無SRAM,19個可編程I/O,通用PLD有16個輸入) |
| PSD303L | Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個可編程I/O,通用PLD有16個輸入) |
| PSD303 | Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個可編程I/O,通用PLD有16個輸入) |
| PSD311L | Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個可編程I/O,通用PLD有12個輸入) |
| PSD311 | Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個可編程I/O,通用PLD有12個輸入) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PSD301L-15J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral |
| PSD301L-15JI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral |
| PSD301L-15LI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral |
| PSD301L-15LM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral |
| PSD301L-15U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral |
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