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參數(shù)資料
| 型號： | UPSD3234A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Flash Programmable System Devices with 8032 Microcontroller Core |
| 中文描述： | 閃存可編程系統(tǒng)設(shè)備與8032微控制器內(nèi)核 |
| 文件頁數(shù)： | 128/170頁 |
| 文件大小： | 2717K |
| 代理商： | UPSD3234A |
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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
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POWER MANAGEMENT
All PSD Modules offer configurable power saving
options. These options may be used individually or
in combinations, as follows:
–
The primary and secondary Flash memory,
and SRAM blocks are built with power
management technology. In addition to using
special silicon design methodology, power
management technology puts the memories
into Standby Mode when address/data inputs
are not changing (zero DC current). As soon
as a transition occurs on an input, the affected
memory “wakes up,” changes and latches its
outputs, then goes back to standby. The
designer does not
have to do anything special
to achieve Memory Standby Mode when no
inputs are changing—it happens
automatically.
–
The PLD sections can also achieve Standby
Mode when its inputs are not changing, as
described in the sections on the Power
Management Mode Registers (PMMR).
–
As with the Power Management Mode, the
Automatic Power Down (APD) block allows
the PSD Module to reduce to stand-by current
automatically. The APD Unit can also block
MCU address/data signals from reaching the
memories and PLDs.
–
Built in logic monitors the Address Strobe of
the MCU for activity. If there is no activity for a
certain time period (MCU is asleep), the APD
Unit initiates Power-down Mode (if enabled).
Once in Power-down Mode, all address/data
signals are blocked from reaching memory
and PLDs, and the memories are deselected
internally. This allows the memory and PLDs
to remain in Standby Mode even if the
address/data signals are changing state
externally (noise, other devices on the MCU
bus, etc.). Keep in mind that any unblocked
PLD input signals that are changing states
keeps the PLD out of Stand-by Mode, but not
the memories.
PSD Chip Select Input (CSI, PD2) can be
used to disable the internal memories, placing
them in Standby Mode even if inputs are
changing. This feature does not block any
internal signals or disable the PLDs. This is a
good alternative to using the APD Unit. There
is a slight penalty in memory access time
when PSD Chip Select Input (CSI, PD2)
makes its initial transition from deselected to
selected.
The PMMRs can be written by the MCU at run-
time to manage power. The PSD Module
supports “blocking bits” in these registers that
are set to block designated signals from
reaching both PLDs. Current consumption of
the PLDs is directly related to the composite
frequency of the changes on their inputs (see
Figure
72
and
Figure 73., page 135
).
Significant power savings can be achieved by
blocking signals that are not used in DPLD or
CPLD logic equations.
–
–
Figure 69. APD Unit
APD EN
PMMR0 BIT 1=1
ALE
RESET
CSI
CLKIN
TRANSITION
DETECTION
EDGE
DETECT
APD
COUNTER
POWER DOWN
(PDN)
SELECT
DISABLE BUS
INTERFACE
CSIOP SELECT
FLASH SELECT
SRAM SELECT
PD
CLR
PD
DISABLE
FLASH/SRAM
PLD
AI06608
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PDF描述 |
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| uPSD3234BV-40T1T | POWERLINE: RP30-S_DEW - 4:1 Wide Input Voltage Range- 30 Watts Output Power- 1.6kVDC Isolation- Fixed Operating Frequency- Six-Sided Continuous Shield- International Safety Standard Approvals- Standard 50.8 x40.6x10.2mm Package- Efficiency to 88% |
| uPSD3234AV-24T1T | Flash Programmable System Devices with 8032 Microcontroller Core |
| uPSD3234AV-24T6T | Flash Programmable System Devices with 8032 Microcontroller Core |
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| uPSD3234AV-40T6T | Flash Programmable System Devices with 8032 Microcontroller Core |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPSD3234A-24T1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3234A-24T1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM |
| UPSD3234A-24T6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3234A-24T6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM |
| UPSD3234A-24U1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
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