參數(shù)資料
型號(hào)： PSD301L
英文描述： Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個(gè)可編程I/O,通用PLD有12個(gè)輸入)
中文描述： 現(xiàn)場(chǎng)可編程微控制器外圍設(shè)備（可編程邏輯，16K的位的SRAM，19余個(gè)可編程輸入/輸出，通用PLD的有12個(gè)輸入）
文件頁(yè)數(shù)： 8/23頁(yè)
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(guān)PDF資料
PDF描述
PSD302R Field Programmable Microcontroller Peripherals(可編程邏輯,無(wú)SRAM,19個(gè)可編程I/O,通用PLD有16個(gè)輸入)
PSD303L Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個(gè)可編程I/O,通用PLD有16個(gè)輸入)
PSD303 Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個(gè)可編程I/O,通用PLD有16個(gè)輸入)
PSD311L Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個(gè)可編程I/O,通用PLD有12個(gè)輸入)
PSD311 Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個(gè)可編程I/O,通用PLD有12個(gè)輸入)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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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