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: PSD301R-A-25JI
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): 10/85頁
文件大小: 691K
代理商: PSD301R-A-25JI
PSD3XX Famly
7
7.0
ZPSD
Background
(cont.)
Integrated Power Management
TM
Operation
Upon each address or logic input change to the ZPSD, the device powers up from low
power standby for a short time. Then the ZPSD consumes only the necessary power to
deliver new logic or memory data to its outputs as a response to the input change. After the
new outputs are stable, the ZPSD latches them and automatically reverts back to standby
mode. The I
CC
current flowing during standby mode and during DC operation is identical
and is only a few microamperes.
The ZPSD automatically reduces its DC current drain to these low levels and does not
require controlling by the CSI (Chip Select Input). Disabling the CSI pin unconditionally
forces the ZPSD to standby mode independent of other input transitions.
The only significant power consumption in the ZPSD occurs during AC operation.
The ZPSD contains the first architecture to apply zero power techniques to memory and
logic blocks.
Figure 2 compares ZPSD zero power operation to the operation of a discrete solution.
A standard microcontroller (MCU) bus cycle usually starts with an ALE (or AS) pulse and
the generation of an address. The ZPSD detects the address transition and powers up for a
short time. The ZPSD then latches the outputs of the PAD, EPROM and SRAM to the new
values. After finishing these operations, the ZPSD shuts off its internal power, entering
standby mode. The time taken for the entire cycle is less than the ZPSD’s “access time.”
The ZPSD will stay in standby mode while its inputs are not changing between bus cycles.
In an alternate system implementation using discrete EPROM, SRAM, and other discrete
components, the system will consume operating power during the entire bus cycle. This
is because the chip select inputs on the memory devices are usually active throughout
the entire cycle. The AC power consumption of the ZPSD may be calculated using the
composite frequency of the MCU address and control signals, as well as any other logic
inputs to the ZPSD.
ALE
DISCRETE EPROM, SRAM & LOGIC
ADDRESS
EPROM
ACCESS
SRAM
ACCESS
EPROM
ACCESS
I
CC
ZPSD
ZPSD
ZPSD
TIME
Figure 2. ZPSDPower Operation vs. Dscrete Implementation
相關(guān)PDF資料
PDF描述
PSD301R-A-25JM Low Cost Field Programmable Microcontroller Peripherals
PSD301R-A-70J Low Cost Field Programmable Microcontroller Peripherals
PSD301R-A-70JI Low Cost Field Programmable Microcontroller Peripherals
PSD302-15JM Low Cost Field Programmable Microcontroller Peripherals
PSD302-20J Low Cost Field Programmable Microcontroller Peripherals
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSD301R-A-25JM 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD301R-A-70J 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD301R-A-70JI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD301R-A-70JM 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
PSD301R-A-90J 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low Cost Field Programmable Microcontroller Peripherals
主站蜘蛛池模板: 伊金霍洛旗| 泰和县| 红桥区| 丹阳市| 长顺县| 汨罗市| 临猗县| 镇远县| 隆子县| 江安县| 西平县| 郁南县| 于田县| 枣强县| 六枝特区| 铜梁县| 自贡市| 马鞍山市| 永州市| 逊克县| 昂仁县| 馆陶县| 罗城| 新绛县| 日照市| 乌什县| 上高县| 湘潭县| 鄄城县| 黄陵县| 邮箱| 临漳县| 错那县| 社会| 讷河市| 怀集县| 手游| 麻栗坡县| 柯坪县| 吴旗县| 肥乡县|