參數(shù)資料
型號： 90E32ERGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP48
封裝： TQFP-48
文件頁數(shù)： 4/67頁
文件大?。?/td> 777K
代理商： 90E32ERGI
90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Function Description
12
August 24, 2011
3
FUNCTION DESCRIPTION
3.1
POWER SUPPLY
The 90E32 works with single power rail 3.3V. An on-chip voltage reg-
ulator regulates the 1.8V voltage for the digital logic.
The regulated 1.8V power is connected to the VDD18 pin. It needs to
be bypassed by an external capacitor.
The 90E32 has multiple power modes, in Idle and Detection modes
the 1.8V power regulator is not turned on and the digital logic is not pow-
ered. When the logic is not powered, all the configured register values
are not kept (all context lost) except for Detection mode related registers
(10H~13H) for Detection mode configuration.
User has to re-configure the registers in Partial Measurement mode
or Normal mode when transiting from Idle or Detection mode. Refer to
3.6 Power Mode for power mode details.
3.2
CLOCK
The 90E32 has an on-chip oscillator and can directly connect to an
external crystal.
The OSCI pin can also be driven with a clock source.
The oscillator will be powered down in Idle and Detection power
modes, as described in 3.6 Power Mode.
3.3
RESET
There are three reset sources for the 90E32:
-
RESET pin
-
On-chip Power On Reset circuit
-
Software Reset generated by the Software Reset register
3.3.1
RESET PIN
The RESET pin can be asserted to reset the 90E32. The RESET pin
has RC filter with typical time constant of 2
s in the I/O, as well as a 2s
(typical) de-glitch filter.
Any reset pulse that is shorter than 2
s can not reset the 90E32.
3.3.2
POWER ON RESET (POR)
The POR circuit resets the 90E32 at power up.
POR circuit triggers reset when:
-
DVDD power up, crossing the power-up threshold. Refer to Fig-
-
VDD18 regulator changing from disable to enable, i.e. from Idle or
Detection mode to Partial Measurement mode or Normal mode.
Refer to Figure-18.
3.3.3
SOFTWARE RESET
Chip reset can be triggered by writing to the SoftReset register in
Normal mode. The software reset is the same as the reset scope gener-
ated from the RESET pin or POR.
These three reset sources have the same reset scope.
All digital logics and registers, except for the Harmonic Ratio regis-
ters will be subject to reset.
Interface logic: clock dividers
Digital core/ logic: All registers except for some other special
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
90E32ERGI8 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
90E36 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Poly-Phase High-Performance Wide-Span Energy Metering IC
90E36AERGI 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
90E36AERGI8 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
90E36ERGI 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
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