发明名称 |
POWER ON RESET CIRCUIT FOR A DIGITAL DEVICE INCLUDING AN ON-CHIP VOLTAGE DOWN CONVERTER |
摘要 |
A power on reset circuit initializes at power on a digital integrated circuit, and includes a first power on reset signal generator powered by an external power supply voltage and generates a first power on reset signal. A reference voltage generator is powered by the external power supply voltage, and is enabled by the first power on reset signal for generating a stable compensating reference voltage. A voltage down converter circuit receives the reference voltage and is enabled by the first power on reset signal, and converts the external applied power supply voltage to a stable regulated internal supply voltage. A second power on reset signal generator circuit receives the regulated internal supply voltage, and is enabled by the first power on reset signal for generating a second power on reset signal for core parts of the digital integrated circuit for initializing them at power on.
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申请公布号 |
US2008048743(A1) |
申请公布日期 |
2008.02.28 |
申请号 |
US20070829413 |
申请日期 |
2007.07.27 |
申请人 |
STMICROELECTRONICS S.R.L.;STMICROELECTRONICS ASIA PACIFIC PTE LTD.;HYNIX SEMICONDUCTOR, INC. |
发明人 |
SEO DONGHYUN;MULATTI JACOPO;KANG TAEGYOUNG |
分类号 |
H03K3/02 |
主分类号 |
H03K3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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