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PCF2129A 数据表(PDF) 8 Page - NXP Semiconductors |
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PCF2129A 数据表(HTML) 8 Page - NXP Semiconductors |
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8 / 69 page ![]() PCF2129A_2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 02 — 7 May 2010 8 of 69 NXP Semiconductors PCF2129A Integrated RTC, TCXO and quartz crystal Internal registers 1Ah Internal_reg --------- - - - - - - - 1Bh Internal_reg --------- - - - - - - - Table 4. Register overview …continued Bit positions labeled as - are not implemented and will return 0 when read. Bits labeled as T must always be written with logic 0. Bits labeled as X are undefined at power-on and unchanged by subsequent resets. Address Register name Bit Reset value 7 6 5 4 3 2 1 0 |
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