參數(shù)資料
型號(hào)： PSD934F2
英文描述： Configurable Memory System on a Chip for 8-Bit Microcontrollers(用于8位MCU的可配置存儲(chǔ)器系統(tǒng))
中文描述： 在8片位微控制器可配置存儲(chǔ)系統(tǒng)（用于8位微控制器的可配置存儲(chǔ)器系統(tǒng)）
文件頁數(shù)： 46/94頁
文件大?。?/td> 477K
代理商： PSD934F2
PSD9XX Family
Preliminary Information
42
The
PSD9XX
Functional
Blocks
(cont.)
9.4 I/OPorts
There are four programmable I/O ports: Ports A, B, C, and D. Each of the ports is eight
bits except Port D, which is 3 bits. Each port pin is individually user configurable, thus
allowing multiple functions per port. The ports are configured using PSDsoft or by the
microcontroller writing to on-chip registers in the CSIOP address space.
The topics discussed in this section are:
General Port Architecture
Port Operating Modes
Port Configuration Registers
Port Data Registers
Individual Port Functionality.
9.4.1 General Port Architecture
The general architecture of the I/O Port is shown in Figure 19. Individual Port architectures
are shown in Figures 20 through 22. In general, once the purpose for a port pin has been
defined, that pin will no longer be available for other purposes. Exceptions will be noted.
As shown in Figure 19, the ports contain an output multiplexer whose selects are driven
by the configuration bits in the Control Registers (Ports A and B only) and PSDsoft. Inputs
to the multiplexer include the following:
Output data from the Data Out Register
Latched address outputs
General Purpose PLD (GPLD) outputs (external chip selects)
The Port Data Buffer (PDB) is a tri-state buffer that allows only one source at a time to be
read. The PDB is connected to the Internal Data Bus for feedback and can be read by the
microcontroller. The Data Out, Direction and Control Registers, and port pin input are all
connected to the PDB.
The contents of these registers can be altered by the microcontroller. The PDB feedback
path allows the microcontroller to check the contents of the registers.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSD934F2-15J 功能描述:SPLD - 簡單可編程邏輯器件 5V 2M 150ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池?cái)?shù)量:10 最大工作頻率:66 MHz 延遲時(shí)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(fēng)格:Through Hole 封裝 / 箱體:DIP-24
PSD934F290J 制造商:WSI 功能描述:
PSD934F2-90J 功能描述:SPLD - 簡單可編程邏輯器件 PLCC-52 5V 2M 90NS RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池?cái)?shù)量:10 最大工作頻率:66 MHz 延遲時(shí)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(fēng)格:Through Hole 封裝 / 箱體:DIP-24
PSD934F2-90M 功能描述:SPLD - 簡單可編程邏輯器件 5V 2M 90ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池?cái)?shù)量:10 最大工作頻率:66 MHz 延遲時(shí)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(fēng)格:Through Hole 封裝 / 箱體:DIP-24
PSD934F2V-15J 功能描述:SPLD - 簡單可編程邏輯器件 3.3V 2M 150ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池?cái)?shù)量:10 最大工作頻率:66 MHz 延遲時(shí)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(fēng)格:Through Hole 封裝 / 箱體:DIP-24
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