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參數(shù)資料
| 型號(hào)： | PSD833F2-15M |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52 |
| 封裝： | PLASTIC, QFP-52 |
| 文件頁數(shù)： | 67/122頁 |
| 文件大?。?/td> | 489K |
| 代理商： | PSD833F2-15M |
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Preliminary Information
PSD8XXF Family
45
The
PSD8XXF
Functional
Blocks
(cont.)
9.3.3 Data Byte Enable Reference
Microcontrollers have different data byte orientations. The following table shows how the
PSD8XXF interprets byte/word operations in different bus write configurations. Even-byte
refers to locations with address A0 equal to zero and odd byte as locations with A0 equal
to one.
BHE
A0
D7-D0
X
0
Even Byte
X
1
Odd Byte
Table 18. Eight-Bit Data Bus
9.3.4 Microcontroller Interface Examples
Figures 17 through 21 show examples of the basic connections between the PSD8XXF
and some popular microcontrollers. The PSD8XXF Control input pins are labeled as to the
microcontroller function for which they are configured. The MCU interface is specified using
the PSDsoft Configuration.
9.3.4.1 80C31
Figure 17 shows the interface to the 80C31, which has an 8-bit multiplexed address/data
bus. The lower address byte is multiplexed with the data bus. The microcontroller control
signals PSEN, RD, and WR may be used for accessing the internal memory components
and I/O Ports. The ALE input (pin PD0) latches the address.
9.3.4.2 80C251
The Intel 80C251 microcontroller features a user-configurable bus interface with four
possible bus configurations, as shown in Table 19.
Configuration 1 is 80C31 compatible, and the bus interface to the PSD8XXF is identical to
that shown in Figure 17. Configurations 2 and 3 have the same bus connection as shown
in Figure 18. There is only one read input (PSEN) connected to the Cntl1 pin on the
PSD8XXF. The A16 connection to the PA0 pin allows for a larger address input to the
PSD8XXF. Configuration 4 is shown in Figure 19. The RD signal is connected to Cntl1 and
the PSEN signal is connected to the CNTL2.
The 80C251 has two major operating modes: Page Mode and Non-Page Mode. In
Non-Page Mode, the data is multiplexed with the lower address byte, and ALE is active in
every bus cycle. In Page Mode, data D[7:0] is multiplexed with address A[15:8]. In a bus
cycle where there is a Page hit, the ALE signal is not active and only addresses A[7:0]
are changing. The PSD8XXF supports both modes. In Page Mode, the PSD bus timing
is identical to Non-Page Mode except the address hold time and setup time with respect
to ALE is not required. The PSD access time is measured from address A[7:0] valid to
data in valid.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSD833F2-90J | 功能描述:CPLD - 復(fù)雜可編程邏輯器件 5.0V 1M 90ns RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)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 |
| PSD833F2-90JI | 功能描述:SPLD - 簡(jiǎn)單可編程邏輯器件 5.0V 1M 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 |
| PSD833F2-90M | 功能描述:SPLD - 簡(jiǎn)單可編程邏輯器件 5.0V 1M 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 |
| PSD833F2-90MI | 功能描述:CPLD - 復(fù)雜可編程邏輯器件 5.0V 1M 90ns RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)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 |
| PSD834F2-15M | 制造商:STMicroelectronics 功能描述:Flash In-System Programmable Peripherals 52-Pin PQFP |
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