PCF2127 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCF2127' PDF : 101 Pages View PDF
NXP Semiconductors
PCF2127
Accurate RTC with integrated quartz crystal for industrial applications
Table 68. Timestp_ctl - timestamp control register (address
12h) bit description . . . . . . . . . . . . . . . . . . . . . .50
Table 69. Sec_timestp - second timestamp register
(address 13h) bit allocation . . . . . . . . . . . . . . .50
Table 70. Sec_timestp - second timestamp register
(address 13h) bit description . . . . . . . . . . . . . .50
Table 71. Min_timestp - minute timestamp register (address
14h) bit allocation . . . . . . . . . . . . . . . . . . . . . .51
Table 72. Min_timestp - minute timestamp register (address
14h) bit description . . . . . . . . . . . . . . . . . . . . .51
Table 73. Hour_timestp - hour timestamp register (address
15h) bit allocation . . . . . . . . . . . . . . . . . . . . . .51
Table 74. Hour_timestp - hour timestamp register (address
15h) bit description . . . . . . . . . . . . . . . . . . . . . .51
Table 75. Day_timestp - day timestamp register (address
16h) bit allocation . . . . . . . . . . . . . . . . . . . . . .52
Table 76. Day_timestp - day timestamp register (address
16h) bit description . . . . . . . . . . . . . . . . . . . . . .52
Table 77. Mon_timestp - month timestamp register (address
17h) bit allocation . . . . . . . . . . . . . . . . . . . . . .52
Table 78. Mon_timestp - month timestamp register (address
17h) bit description . . . . . . . . . . . . . . . . . . . . . .52
Table 79. Year_timestp - year timestamp register (address
18h) bit allocation . . . . . . . . . . . . . . . . . . . . . .52
Table 80. Year_timestp - year timestamp register (address
18h) bit description . . . . . . . . . . . . . . . . . . . . . .52
Table 81. Battery switch-over and timestamp. . . . . . . . . .53
Table 82. Effect of bits MI and SI on pin INT and bit MSF 55
Table 83. INT operation (bit TI_TP = 1) . . . . . . . . . . . . . .57
Table 84. First increment of time circuits after stop
release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Table 85. Interface selection input pin IFS . . . . . . . . . . . .62
Table 86. Serial interface . . . . . . . . . . . . . . . . . . . . . . . . .63
Table 87. Command byte definition . . . . . . . . . . . . . . . . .63
Table 88. I2C slave address byte . . . . . . . . . . . . . . . . . . .68
Table 89. Limiting values . . . . . . . . . . . . . . . . . . . . . . . . .72
Table 90. Static characteristics . . . . . . . . . . . . . . . . . . . .73
Table 91. Frequency characteristics . . . . . . . . . . . . . . . .78
Table 92. SPI-bus characteristics . . . . . . . . . . . . . . . . . . .80
Table 93. I2C-bus characteristics . . . . . . . . . . . . . . . . . . .82
Table 94. Selection of Real-Time Clocks . . . . . . . . . . . . .89
Table 95. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . .91
Table 96. Revision history . . . . . . . . . . . . . . . . . . . . . . . .93
PCF2127
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 19 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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