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參數(shù)資料
| 型號： | PSD211R |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Low Cost Field Programmable Microcontroller Peripherals |
| 中文描述： | 低成本現(xiàn)場可編程微控制器外圍設(shè)備 |
| 文件頁數(shù)： | 12/51頁 |
| 文件大小： | 348K |
| 代理商： | PSD211R |
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Port
A
B
C
Configurations
I/O or low-order (latched) address lines
I/O and/or CS0–CS7
A16-A18 or CS8-CS10
PSD211R Famly
9
The PSD211R operates in 8-bit address/data mode, enabling it to interface directly to a
variety of 8-bit multiplexed microcontrollers. It works as follows: the address/data bus
(AD0-AD7) is bi-directional and permits the latching of the address when the ALE/AS signal
is active. On the same pins, the data is read from or written to the device, depending on the
state of the control signals (WR, RD, etc.). You should connect your MCU according to the
following figure. Ports A through C can be configured according to Table 3, below.
Your
8-bit
MCU
PSD211R
PA
PB
PC
AD0-AD7
A8-A15
ALE/AS
PSEN
R/W or WR
RD/E
A19/CSI
RESET
A16-A18
1
I/O or A0-A7
I/O or CS0-CS7
CS8-CS10
OR
Figure 3. Connecting a PSD211R to an 8-Bit Multiplexed-Bus MCU
8.0
Operating Mode
Table 3. Bus and Port Configuration Options
9.0
Programmable
Address
Decoder (PAD)
NOTE:
1. Connect A16-A18 to Port C if your MCU outputs more than 16 bits of address.
The PSD211R contains two programmable arrays, referred to as PAD A and PAD B
(Figure 4). PAD A is used to generate chip select signals derived from the input address to
the internal EPROM blocks and I/O ports.
PAD B outputs to Ports B and C for off-chip usage. PAD B can also be used to extend the
decoding to select external devices or as a random logic replacement.
PAD A and PAD B receive the same inputs. The PAD logic is configured by PSDsoft based
on the designer’s input. The PAD’s non-volatile configuration is stored in a re-programmable
CMOS EPROM. Windowed packages are available for erasure by the user. See Table 4 for
a list of PAD A and PAD B functions.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PSD211R-B-15L | Low Cost Field Programmable Microcontroller Peripherals |
| PSD211R-B-15M | Low Cost Field Programmable Microcontroller Peripherals |
| PSD211R-B-70J | Low Cost Field Programmable Microcontroller Peripherals |
| PSD211R-B-70L | Low Cost Field Programmable Microcontroller Peripherals |
| PSD211R-B-70M | Low Cost Field Programmable Microcontroller Peripherals |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSD211R-B-15J | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals |
| PSD211R-B-15L | 制造商:WSI 功能描述: |
| PSD211R-B-15M | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals |
| PSD211R-B-70J | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals |
| PSD211RB-70J | 功能描述:SPLD - 簡單可編程邏輯器件 U 511-ZPSD301B-70J 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(fēng)格:Through Hole 封裝 / 箱體:DIP-24 |
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