Datasheet

PCF2129 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 7 — 19 December 2014 83 of 86
NXP Semiconductors
PCF2129
Accurate RTC with integrated quartz crystal for industrial applications
Table 66. Day_timestp - day timestamp register
(address 16h) bit description . . . . . . . . . . . . . .43
Table 67. Mon_timestp - month timestamp register
(address 17h) bit allocation . . . . . . . . . . . . . . .43
Table 68. Mon_timestp - month timestamp register
(address 17h) bit description . . . . . . . . . . . . . .43
Table 69. Year_timestp - year timestamp register
(address 18h) bit allocation . . . . . . . . . . . . . . .43
Table 70. Year_timestp - year timestamp register
(address 18h) bit description . . . . . . . . . . . . . .43
Table 71. Battery switch-over and timestamp. . . . . . . . . .44
Table 72. Effect of bits MI and SI on pin INT
and
bit MSF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Table 73. First increment of time circuits after
stop release . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Table 74. Interface selection input pin IFS . . . . . . . . . . . .51
Table 75. Serial interface . . . . . . . . . . . . . . . . . . . . . . . . .52
Table 76. Command byte definition . . . . . . . . . . . . . . . . .52
Table 77. I
2
C slave address byte . . . . . . . . . . . . . . . . . . .56
Table 78. Limiting values . . . . . . . . . . . . . . . . . . . . . . . . .58
Table 79. Static characteristics . . . . . . . . . . . . . . . . . . . .59
Table 80. Frequency characteristics . . . . . . . . . . . . . . . .64
Table 81. SPI-bus characteristics . . . . . . . . . . . . . . . . . .66
Table 82. I
2
C-bus characteristics . . . . . . . . . . . . . . . . . . .68
Table 83. Selection of Real-Time Clocks . . . . . . . . . . . . .75
Table 84. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . .77
Table 85. Revision history . . . . . . . . . . . . . . . . . . . . . . . .79