參數(shù)資料
型號: LP5526
廠商: National Semiconductor Corporation
元件分類: DRAM
英文描述: 4 Mbit Uniform Sector, Serial Flash Memory
中文描述: 4兆位統(tǒng)一部門,串行閃存
文件頁數(shù): 7/33頁
文件大?。?/td> 1150K
代理商: LP5526
Modes of Operation
RESET:
In the RESET mode all the internal registers are reset to the default values. Reset is entered always if input
NRST is LOW or internal Power On Reset is active. Power On Reset (POR) will activate during the chip
startup or when the supply voltages V
DD1
and V
DD2
fall below 1.5V. Once V
DD1
and V
DD2
rises above 1.5V,
POR will inactivate and the chip will continue to the STANDBY mode. NSTBY control bit is low after POR
by default.
The STANDBY mode is entered if the register bit NSTBY is LOW and Reset is not active. This is the low
power consumption mode, when all circuit functions are disabled. Registers can be written in this mode and
the control bits are effective immediately after start up.
When NSTBY bit is written high, the INTERNAL STARTUP SEQUENCE powers up all the needed internal
blocks (V
, Bias, Oscillator etc.). To ensure the correct oscillator initialization, a 10ms delay is generated
by the internal state-machine. If the chip temperature rises too high, the Thermal Shutdown (TSD) disables
the chip operation and STARTUP mode is entered until no thermal shutdown event is present.
BOOST STARTUP:
Soft start for boost output is generated in the BOOST STARTUP mode. The boost output is raised in low
current PWM mode during the 20ms delay generated by the state-machine. All LED outputs are off during
the 20ms delay to ensure smooth startup. The Boost startup is entered from Internal Startup Sequence if
EN_BOOST is HIGH or from Normal mode when EN_BOOST is written HIGH.
NORMAL:
During NORMAL mode the user controls the chip using the Control Registers. The registers can be written
in any sequence and any number of bits can be altered in a register in one write.
STANDBY:
STARTUP:
20179775
L
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相關PDF資料
PDF描述
LP5526TL 4 Mbit Uniform Sector, Serial Flash Memory
LP5526TLX 4 Mbit Uniform Sector, Serial Flash Memory
LP5550 PowerWise Technology Compliant Energy Management Unit
LP5550SQ PowerWise Technology Compliant Energy Management Unit
LP5550SQX PowerWise Technology Compliant Energy Management Unit
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