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MIC3003GML 数据表(PDF) 72 Page - Micrel Semiconductor |
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MIC3003GML 数据表(HTML) 72 Page - Micrel Semiconductor |
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72 / 75 page  Micrel, Inc. MIC3003 November 2009 72 M9999-111209-C hbwhelp@micrel.com or (408) 955-1690 Power-On Hour Meter Data (POHDATA) D[7] read/write D[6] read/write D[5] read/write D[4] read/write D[3] read/write D[2] read/write D[1] read/write D[0] read/write Default values for all bytes when the MIC3003 is shipped 0000 0000b = 00h Serial address A6h Byte addresses 32 – 34 and 36 - 38 = 20h - 22h and 24h - 26h These registers are used for backing up the POH result during power cycles. At power-up, the POH meter selects the larger of the two values as the initial count. Incremental results are stored in alternate register pairs. The power-on hour meter may be reset or preset by writing to these registers. These registers are not typically intended to be used by the OEM or end user. The current value of the power-on hours meter may be read from the POHh and POHl registers. If it is necessary to preset the power-on hours meter to a specific value, please consult the factory for the exact format to be written to the POHDATA registers. These registers are non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for access to these registers. Byte Weight 3 POHA, high-byte 2 POHA, low-byte 1 POHB, high-byte 0 POHB, low-byte OEM Scratchpad Registers (SCRATCHn) Default value 0000 0000b = 00h Serial address A6h Byte addresses 136 - 207 (88 - CFh) 208 - 221 (D0 - DDh): This area is part of the OEM scratch pad only if the hard- coded delimiters option for receive power linearization is used. 222 - 250 (DE - FAh) The scratchpad registers are general-purpose non-volatile memory locations. They can be freely read from and written to any time the MIC3003 is in OEM mode. |
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