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PCF2127AT/1 数据表(PDF) 8 Page - NXP Semiconductors |
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PCF2127AT/1 数据表(HTML) 8 Page - NXP Semiconductors |
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8 / 80 page  PCF2127A_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 80 NXP Semiconductors PCF2127A Integrated RTC, TCXO and quartz crystal 14h Min_timestp - MINUTE_TIMESTP (0 to 59) - XXX XXXX 15h Hour_timestp - - AMPM HOUR_TIMESTP (1 to 12) in 12 h mode - - XX XXXX HOUR_TIMESTP (0 to 23) in 24 h mode - - XX XXXX 16h Day_timestp - - DAY_TIMESTP (1 to 31) - - XX XXXX 17h Mon_timestp ---MONTH_TIMESTP (1 to 12) - - - X XXXX 18h Year_timestp YEAR_TIMESTP (0 to 99) XXXX XXXX Aging offset register 19h Aging_offset ----AO[3:0] - - - - 1000 RAM registers 1Ah RAM_addr_MSB -------RA8 - - - - - - - 0 1Bh RAM_addr_LSB RA[7:0] 0000 0000 1Ch RAM_wrt_cmd XXXXXXXX XXXX XXXX 1Dh RAM_rd_cmd XXXXXXXX XXXX XXXX Table 4. Register overview …continued Bit positions labeled as - are not implemented and will return a 0 when read. Bit 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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