欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號： PSD814412MIT
廠商： 意法半導(dǎo)體
英文描述： Phase Shift Resonant Controller 28-SOIC 0 to 70
中文描述： Flash在系統(tǒng)可編程ISP的外設(shè)的8位微控制器
文件頁數(shù)： 30/110頁
文件大小： 1737K
代理商： PSD814412MIT
PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
30/110
SECTOR SELECT AND SRAM SELECT
Sector Select (FS0-FS7, CSBOOT0-CSBOOT3)
and SRAM Select (RS0) are all outputs of the
DPLD. They are setup by writing equations for
them in PSDabel. The following rules apply to the
equations for these signals:
1.
Primary Flash memory and secondary Flash
memory Sector Select signals must
not
be
larger than the physical sector size.
2.
Any primary Flash memory sector must
not
be
mapped in the same memory space as
another Flash memory sector.
3.
A secondary Flash memory sector must
not
be
mapped in the same memory space as
another secondary Flash memory sector.
4.
SRAM, I/O, and Peripheral I/O spaces must
not
overlap.
5.
A secondary Flash memory sector
may
overlap a primary Flash memory sector. In
case of overlap, priority is given to the
secondary Flash memory sector.
6.
SRAM, I/O, and Peripheral I/O spaces
may
overlap any other memory sector. Priority is
given to the SRAM, I/O, or Peripheral I/O.
Example
FS0 is valid when the address is in the range of
8000h to BFFFh, CSBOOT0 is valid from 8000h to
9FFFh, and RS0 is valid from 8000h to 87FFh.
Any address in the range of RS0 always accesses
the SRAM. Any address in the range of CSBOOT0
greater than 87FFh (and less than 9FFFh) auto-
matically addresses secondary Flash memory
segment 0. Any address greater than 9FFFh ac-
cesses the primary Flash memory segment 0. You
can see that half of the primary Flash memory seg-
ment 0 and one-fourth of secondary Flash memory
segment 0 cannot be accessed in this example.
Also note that an equation that defined FS1 to any-
where in the range of 8000h to BFFFh would
not
be valid.
Figure
9
shows the priority levels for all memory
components. Any component on a higher level can
overlap and has priority over any component on a
lower level. Components on the same level must
not
overlap. Level one has the highest priority and
level 3 has the lowest.
Memory Select Configuration for MCUs with
Separate Program and Data Spaces
The 8031 and compatible family of MCUs, which
includes the 80C51, 80C151, 80C251, and
80C51XA, have separate address spaces for Pro-
gram memory (selected using Program Select En-
able (PSEN, CNTL2)) and Data memory (selected
using Read Strobe (RD, CNTL1)). Any of the
memories within the PSD can reside in either
space or both spaces.
This is controlled through manipulation of the VM
register that resides in the CSIOP space.
The VM register is set using PSDsoft Express to
have an initial value. It can subsequently be
changed by the MCU so that memory mapping
can be changed on-the-fly.
For example, you may wish to have SRAM and pri-
mary Flash memory in the Data space at Boot-up,
and secondary Flash memory in the Program
space at Boot-up, and later swap the primary and
secondary Flash memories. This is easily done
with the VM register by using PSDsoft Express
Configuration to configure it for Boot-up and hav-
ing the MCU change it when desired.
Table
13., page 31
describes the VM Register.
Figure 9. Priority Level of Memory and I/O
Components
Configuration Modes for MCUs with Separate
Program and Data Spaces
Separate Space Modes.
Program space is sep-
arated from Data space. For example, Program
Select Enable (PSEN, CNTL2) is used to access
the program code from the primary Flash memory,
while Read Strobe (RD, CNTL1) is used to access
data from the secondary Flash memory, SRAM
and I/O Port blocks. This configuration requires
the VM register to be set to 0Ch (see
Figure
10., page 31
).
Combined Space Modes.
The
Data spaces are combined into one memory
space that allows the primary Flash memory, sec-
ondary Flash memory, and SRAM to be accessed
by either Program Select Enable (PSEN, CNTL2)
or Read Strobe (RD, CNTL1). For example, to
configure the primary Flash memory in Combined
space, Bits b2 and b4 of the VM register are set to
'1' (see
Figure 11., page 31
).
Program
and
Level 1
SRAM, I/O, or
Peripheral I/O
Level 2
Secondary
Non-Volatile Memory
Highest Priority
Lowest Priority
Level 3
Primary Flash Memory
AI02867D
相關(guān)PDF資料
PDF描述
PSD814412MT Phase Shift Resonant Controller 28-SOIC 0 to 70
PSD814415JIT Phase Shift Resonant Controller 28-SOIC 0 to 70
PSD814415JT Flash In-System Programmable ISP Peripherals For 8-bit MCUs
PSD814415MIT Phase Shift Resonant Controller 20-PDIP 0 to 70
PSD814415MT Phase Shift Resonant Controller 28-PLCC 0 to 70
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: 存儲類型:EEPROM 大電池數(shù)量:128 最大工作頻率:333 MHz 延遲時間: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 安裝風格:Through Hole 封裝 / 箱體:DIP-24
PSD833F2-90M 功能描述:SPLD - 簡單可編程邏輯器件 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: 存儲類型:EEPROM 大電池數(shù)量:128 最大工作頻率:333 MHz 延遲時間: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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*
主站蜘蛛池模板： 那曲县| 山东| 定远县| 松桃| 客服| 齐河县| 定边县| 安新县| 临猗县| 湖口县| 灯塔市| 鹤壁市| 洪泽县| 浑源县| 老河口市| 平原县| 久治县| 封开县| 藁城市| 罗平县| 夏邑县| 青海省| 滁州市| 定结县| 虹口区| 衡南县| 嘉义县| 慈溪市| 鹤峰县| 富宁县| 视频| 林州市| 阜宁县| 星座| 宜良县| 遂宁市| 乡城县| 衡南县| 安丘市| 临泽县| 广河县|