參數(shù)資料
型號： PSD303R
英文描述： Field Programmable Microcontroller Peripherals(可編程邏輯,無SRAM,19個可編程I/O,通用PLD有16個輸入)
中文描述： 現(xiàn)場可編程微控制器外圍設備（可編程邏輯，無的SRAM，19余個可編程輸入/輸出，通用PLD的有16個輸入）
文件頁數(shù)： 11/127頁
文件大?。?/td> 682K
代理商： PSD303R
PSD3XX Famly
2-11
Programmable
Address
Decoder (PAD)
The PSD3XX consists of two programmable arrays referred to as PAD A and PAD B
(Figure 3). PAD A is used to generate chip select signals derived from the input address to
the internal EPROM blocks, SRAM, I/O ports, and Track Mode signals. All its I/O functions
are listed in Table 3 and shown in Figure 3. 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. The input bus to both PAD A and PAD B is the same. By using the
PSDsoft Development Tools software, each programmable bit in the PAD array can have
one of three logic states of 0, 1, and don’t care (X). In a user’s logic design, both PADs can
share the same inputs, using the X for input signals that are not supposed to affect other
functions. The PADs use reprogrammable CMOS EPROM technology and can be
programmed and erased (if using windowed packages) by the user.
Multiplexed Address/Data
Non-Multiplexed Address/Data
8-bit Data Bus
I/O or low-order address
lines or low-order multiplexed
address/data byte
Port A
D0–D7 data bus byte
Port B
I/O and/or CS0–CS7
I/O and/or CS0–CS7
AD0/A0–AD7/A7
Low-order multiplexed
address/data byte
Low-order address bus byte
AD8/A8–AD15/A15
High-order multiplexed
address data byte
High-order address bus byte
16-bit Data Bus
I/O or low-order address
lines or low-order multiplexed
address/data byte
Port A
Low-order data bus byte
Port B
I/O and/or CS0–CS7
High-order data bus byte
AD0/A0–AD7/A7
Low-order multiplexed
address/data byte
Low-order address bus byte
AD8/A8–AD15/A15
High-order multiplexed
address/data byte
High-order address bus byte
Table 2.
PSD30X Bus
and Port
Configuration
Options
Multiplexed Address/Data
Non-Multiplexed Address/Data
8-bit Data Bus
I/O or low-order address
lines or low-order multiplexed
address/data byte
Port A
D0–D7 data bus byte
Port B
I/O and/or CS0–CS7
I/O and/or CS0–CS7
AD0/A0–AD7/A7
Low-order multiplexed
address/data byte
Low-order address bus byte
A8–A15
High-order address bus byte
High-order address bus byte
Table 2a.
PSD31X Bus
and Port
Configuration
Options
相關PDF資料
PDF描述
PSD304RL Field Programmable Microcontroller Peripherals(可編程邏輯,無SRAM,19個可編程I/O,通用PLD有16個輸入)
PSD312L Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,4位頁寄存器,19個可編程I/O,通用PLD有16個輸入)
PSD312R Field Programmable Microcontroller Peripherals(可編程邏輯,無SRAM,4位頁寄存器,19個可編程I/O,通用PLD有16個輸入)
PSD313L Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,19個可編程I/O,通用PLD有16個輸入)
PSD314RL Field Programmable Microcontroller Peripherals(可編程邏輯,無SRAM,19個可編程I/O,通用PLD有16個輸入)
相關代理商/技術參數(shù)
參數(shù)描述
PSD303R-15J 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD303R-15JI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD303R-15JM 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD303R-20J 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD303R-20JI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
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