參數(shù)資料
型號: PSD413A2
英文描述: Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,40個可編程I/O,通用PLD有59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,40余個可編程輸入/輸出,通用PLD的有59個輸入)
文件頁數(shù): 37/97頁
文件大?。?/td> 309K
代理商: PSD413A2
PSD4XX Famly
4-37
PSD4XX Interface To Non-Multiplexed Bus
Figure 21 shows a PSD4XX interfacing to a microcontroller with a non-multiplexed
address/data bus. The address bus is connected to the ADIO Port, and the data bus is
connected to Port C and/or Port D, depending on the bus width. There is no need for the
ADIO Port to latch the address internally, but the user is offered the option to do so in the
PSD4XX PSDsoft Software. The data Ports are in tri-state mode when the PSD4XX is not
accessed by the microcontroller.
Data Byte Enable
Microcontrollers have different data byte orientations with regard to the data bus. The
following tables show how the PSD4XX handles the byte enable under different bus
configurations. Even byte refers to locations with address A0 equal to “0”, and odd byte as
locations with A0 equal to “1”.
BHE
A0
D7 – D0
X
0
Even Byte
X
1
Odd Byte
Table 7. 8-Bit Data Bus
Table 8. 16-Bit Data Bus With BHE
BHE
A0
D15 – D8
D7 – D0
0
0
Odd byte
Even byte
0
1
Odd byte
1
0
Even byte
WRH
0
WRL
0
D15 – D8
Odd byte
D7 – D0
Even byte
0
1
Odd byte
1
0
Even byte
Table 9. 16-Bit Data Bus With WRHand WRL
SIZ0
A0
D15 – D8
D7 – D0
0
0
Even byte
Odd byte
1
0
Even byte
1
1
Odd byte
Table 10. 16-Bit Data Bus With SIZ0, A0
LDS
UDS
D15 – D8
D7 – D0
0
0
Even byte
Odd byte
1
0
Even byte
0
1
Odd byte
Table 11. 16-Bit Data Bus With UDS, LDS
Bus
Interface
(Cont.)
相關PDF資料
PDF描述
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PSD4135G2 Flash In-System-Programmable Peripherals for 16-Bit MCUs(用于16位MCU的閃速在系統(tǒng)可編程外圍芯片)
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相關代理商/技術參數(shù)
參數(shù)描述
PSD413A2-C-70L 制造商:WSI 功能描述:
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PSD4235G2-70U 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 4M 70ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風格:Through Hole 封裝 / 箱體:DIP-24
PSD4235G2-90U 功能描述:CPLD - 復雜可編程邏輯器件 5.0V 4M 90ns RoHS:否 制造商:Lattice 系列: 存儲類型:EEPROM 大電池數(shù)量:128 最大工作頻率:333 MHz 延遲時間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100