參數(shù)資料
型號(hào)： PSD411A1-C-90JI
廠商： 意法半導(dǎo)體
英文描述： High Speed CMOS Logic Dual 2-to-4 Line Decoders/Demultiplexers 16-SOIC -55 to 125
中文描述： 低成本現(xiàn)場(chǎng)可編程微控制器外圍設(shè)備
文件頁數(shù)： 41/123頁
文件大?。?/td> 657K
代理商： PSD411A1-C-90JI
PSD4XX Famly
38
Pin
Pin
Pin
Pin
Pin
Pin Name
Function
1
RD
Function
2
E
Function
3
DS
Function
4
LDS
Function
5
RD
WR
WR
R/W
WRL
PE0
BHE
PSEN
WRH
UDS
SIZ0
PE1
ALE
AD0
A0
BLE
Table 6. Alternate Pin Functions
9.2.2 PSD4XX Interface To a Multiplexed Bus
Figure 20 shows a typical connection to a microcontroller with a multiplexed bus. The
ADIO port of the PSD4XX is connected directly to the microcontroller address/data bus
(AD0-AD15 for 16 bit bus). The ALE input signal latches the address lines internally. In a
read bus cycle, data is driven out through the ADIO Port transceivers after the specified
access time. The internal ADIO Port connection for a 16 bit multiplexed bus is shown in
Figure 21. The ADIO Port is in tri-state mode if none of the PSD4XX internal devices are
selected.
9.2.3 PSD4XX Interface To Non-Multiplexed Bus
Figure 22 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.
The PSD4XX
Architecture
(cont.)
相關(guān)PDF資料
PDF描述
PSD411A1-C-90UI High Speed CMOS Logic Hex Schmitt-Triggered Inverters 14-PDIP -55 to 125
PSD411A2-C-70J High Speed CMOS Logic Hex Schmitt-Triggered Inverters 14-SOIC -55 to 125
PSD411A2-C-70L High Speed CMOS Logic Hex Schmitt-Triggered Inverters 14-SOIC -55 to 125
PSD411A2-C-70U High Speed CMOS Logic Hex Schmitt-Triggered Inverters 14-SOIC -55 to 125
PSD411A2-C-90JI High Speed CMOS Logic Hex Schmitt-Triggered Inverters 14-SOIC -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSD411A1-C-90UI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD411A2 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD411A2-12J 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral
PSD411A2-12JI 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Peripheral
PSD411A2-12LI 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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