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參數(shù)資料
| 型號(hào)： | UPSD3422EV |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic(帶有USB和可編程邏輯的Turbo Plus系列快速Turbo 8032 MCU) |
| 中文描述： | Turbo Plus系列高速渦輪8032 USB和可編程邏輯（帶有的USB和可編程邏輯的渦輪加系列快速渦輪8032單片機(jī)微控制器） |
| 文件頁(yè)數(shù)： | 249/293頁(yè) |
| 文件大?。?/td> | 4624K |
| 代理商： | UPSD3422EV |
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uPSD34xx
PSD module
249/293
of PLD input transitions is zero (no input transitions). Now moving up the frequency axis to
consider the AC current component, current consumption remains considerably less than
Turbo mode until PLD input transitions happen so rapidly that the PLDs do not have time to
latch their outputs and go to standby between the transitions anymore. This is where the
lines converge on the graphs, and current consumption becomes the same for PLD input
transitions at this frequency and higher regardless if Turbo mode is on or off. To determine
the current consumption of the PLDs with Turbo mode off, extrapolate the AC component
from the graph based on number of product terms and input frequency. The only DC
component in non-Turbo mode is the PSD Module standby current.
The key to reducing PLD current consumption is to reduce the composite frequency of
transitions on the PLD input bus, moving down the frequency scale on the graphs. One way
to do this is to carefully select which signals are entering PLD inputs, not selecting high
frequency signals if they are not used in PLD equations. Another way is to use PLD
“Blocking Bits” to block certain signals from entering the PLD input bus.
28.5.59
PLD blocking bits
Blocking specific signals from entering the PLDs using bits of the csiop PMMR registers can
further reduce PLD AC current consumption by lowering the effective composite frequency
of inputs to the PLDs.
28.5.60
Blocking 8032 bus control signals
When the 8032 is active on the MCU Module, four bus control signals (RD, WR, PSEN, and
ALE) are constantly transitioning to manage 8032 bus traffic. Each time one of these signals
has a transition from logic ’1’ to '0,' or 0 to '1,' it will wake up the PLDs if operating in non-
Turbo mode, or when in Turbo mode it will cause the affected PLD gates to draw current. If
equations in the DPLD or GPLD do not use the signals RD, WR, PSEN, or ALE then these
signals can be blocked which will reduce the AC current component substantially. These bus
control signals are rarely used in DPLD equations because they are routed in silicon directly
to the memory arrays of the PSD Module, bypassing the PLDs. For example, it is NOT
necessary to qualify a memory chip select signal with an MCU write strobe, such as “fs0 =
address range & !WR_”. Only “fs0 = address range” is needed.
Each of the 8032 bus control signals may be blocked individually by writing to Bits 2, 3, 4,
and 5 of the PMMR2 register shown in
Table 145 on page 244
. Blocking any of these four
bus control signals only prevents them from reaching the PLDs, but they will always go to
the memories directly.
However, sometimes it is necessary to use these 8032 bus control signals in the GPLD
when creating interface signals to external I/O peripherals. But it is still possible to save
power by dynamically unblocking the bus signals before reading/writing the external device,
then blocking the signals after the communication is complete.
The user can also block an input signal coming from pin PC7 to the PLD input bus if desired
by writing to Bit 6 of PMMR2.
28.5.61
Blocking common clock, CLKIN
The input CLKIN (from pin PD1) can be blocked to reduce current consumption. CLKIN is
used as a common clock input to all OMC flip-flips, it is a general input to the PLD input bus,
and it is used to clock the APD counter. In PSDsoft Express, the function of pin PD1 must be
相關(guān)PDF資料 |
PDF描述 |
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| UPSD3434EV | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic(帶有USB和可編程邏輯的Turbo Plus系列快速Turbo 8032 MCU) |
| UPSD3432 | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic |
| UPSD3432E | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic |
| UPSD3432E-40T6T | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic |
| UPSD3432E-40U6T | Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPSD3422EV-40T6 | 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3422EV-40U6 | 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3422EVB40T6 | 功能描述:8位微控制器 -MCU uPSD34x Turbo Plus Fast Turbo 8032 MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3422EVB40U6 | 功能描述:8位微控制器 -MCU uPSD34x Turbo Plus Fast Turbo 8032 MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| UPSD3433E-40T6 | 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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