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(shè)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): 48/97頁
文件大?。?/td> 309K
代理商: PSD413A2
PSD4XX Famly
4-48
Table 12. Operating Modes of the I/OPorts
Table 12 summarizes the operating modes of the I/O ports. Not all the functions are
available to every port.
Port Mode
Port A
Port B
Port C
Port D
Port E
Standard MCU I/O
Yes
Yes
Yes
Yes
Yes
PLD I/O
Yes
Yes
Input Only
*
Input Only
*
Yes
*
Address Out
Yes
Yes
Yes
Yes
Yes
Address In
Yes
Yes
**
Yes
**
Yes
**
Data Port
Yes
Yes
Alternate Function In
Yes
Peripheral I/O
Yes
Open Drain
Yes
Yes
*
PSD4XXA2 Only.
**
For external decoding. Cannot be latched by ALE
Peripheral I/O
This mode enables the microcontroller to read or write to a peripheral though Port A. When
there is no read/write operation, Port A is tri-stated. One of the applications of Peripheral I/O
is in a DMA based design.
J
Configuration
1.Declare the pins used as pheripheral I/O in the ABEL file.
2.Write logic equations for PSEL0 and PSEL1.
3.Write a “1” to the PIO bit in the VM Register to activate the Peripheral I/O operation.
See the section on Peripheral I/O for a detailed description.
Open Drain Outputs
This mode enables the user to configure Ports C and D pins as open drain outputs. CMOS
output is the default configuration. Writing “1” to the corresponding bit in the Open Drain
Register changes the pin to open drain output.
I/OPorts
(Cont.)
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參數(shù)描述
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PSD4235G2-90U 功能描述:CPLD - 復(fù)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