參數(shù)資料
型號(hào)： PSD402A1-20UI
英文描述： 100V 100kRad Hi-Rel Single N-Channel TID Hardened MOSFET in a SMD-2 package; Similar to IRHNA7160 with optional Total Dose Rating of 500kRads
中文描述： 現(xiàn)場(chǎng)可編程外圍
文件頁(yè)數(shù)： 65/123頁(yè)
文件大?。?/td> 657K
代理商： PSD402A1-20UI
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PSD4XX Famly
62
9.4.4 Memory Select Map For 8031 Application
The 8031 family of microcontrollers has separate code memory space and data memory
space. This feature requires a different Memory Select Map. Two modes of operation are
provided for 8031 applications. The selection of the modes is specified in the PSD4XX
PSDsoft Software (PSDconfiguration):
J
Separate Space Mode
In this mode, the PSEN signal is used to access code from EPROM, and the RD
signal is used to access data from SRAM. The code memory space is separated from
the data memory space.
J
Combined Space Mode
In this mode, the EPROM can be accessed by PSEN or RD. The EPROM is used for
code and data storage. The memory block's address space cannot overlap.
If data and code memory blocks must overlap each other, the RD signal can be included as
an additional address input in generating the EPROM chip select signals (ES0 – ES3). In
this case the EPROM access time is from the RD valid to data valid. Figures 32a and 32b
show the memory configuration in the two modes.
In some applications it is desirable to execute program codes in SRAM. The PSD4XX
provides this option by enabling PSEN to access SRAM. To activate this option, the
SRCODE bit of the VM Register must be set to “1” (see Table 17). SRAM space can
overlap EPROM space and has priority when PSEN is used.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
*
*
*
*
*
*
SRCODE
PIO
1 = ON
1 = ON
*
= Reserved for future use, bits set to zero.
Table 17. VM Register
The PSD4XX
Architecture
(cont.)
相關(guān)PDF資料
PDF描述
PSD402A1-70J 100V 100kRad Hi-Rel Single N-Channel TID Hardened MOSFET in a SMD-2 package; Similar to IRHNA7160 with optional Total Dose Rating of 1000kRads
PSD402A1-70U Field-Programmable Peripheral
PSD402A1-90J 100V 100kRad Hi-Rel Single N-Channel TID Hardened MOSFET in a SMD-2 package; JANS Certified version of the IRHNA7160
PSD402A2-20UI 200V 100kRad Hi-Rel Single N-Channel TID Hardened MOSFET in a Low-Ohmic TO-254AA package. Also available with Total Dose Rating of 300kRads.; Similar to IRHMS67260 with optional Total Dose Rating of 300kRads
PSD402A2-70J 200V 100kRad Hi-Rel Single N-Channel TID Hardened MOSFET in a Low-Ohmic TO-254AA package. Also available with Total Dose Rating of 300kRads.; A IRHMS67260 with Standard Packaging
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSD402A1-70J 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Field-Programmable Peripheral
PSD402A1-70U 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Field-Programmable Peripheral
PSD402A1-90J 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Field-Programmable Peripheral
PSD402A1-90U 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Field-Programmable Peripheral
PSD402A1-C-15J 制造商:WSI 功能描述:
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