PCF2129AT NXP [NXP Semiconductors], PCF2129AT Datasheet - Page 65

• Manufacturer Part Number: PCF2129AT
• Description: Integrated RTC, TCXO and quartz crystal
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
22. Tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10. CLKOUT frequency selection . . . . . . . . . . . . . .12
Table 11. Aging_offset - crystal aging offset register
Table 12. Frequency correction at 25 ×C, typical . . . . . .13
Table 13. Power management control bit description. . . .14
Table 14. Output pin BBS . . . . . . . . . . . . . . . . . . . . . . . . .17
Table 15. Seconds - seconds and clock integrity
Table 16. Seconds coded in BCD format . . . . . . . . . . . .22
Table 17. Minutes - minutes register (address 04h)
Table 18. Hours - hours register (address 05h)
Table 19. Days - days register (address 06h)
Table 20. Weekdays - weekdays register
Table 21. Weekday assignments . . . . . . . . . . . . . . . . . . .23
Table 22. Months - months register (address 08h)
Table 23. Month assignments in BCD format . . . . . . . . . .24
Table 24. Years - years register (address 09h)
Table 25. Second_alarm - second alarm register
Table 26. Minute_alarm - minute alarm register
Table 27. Hour_alarm - hour alarm register
Table 28. Day_alarm - day rearm register
Table 29. Weekday_alarm - weekday alarm register
Table 30. Watchdg_tim_ctl - watchdog timer control
Table 31. Watchdg_tim_val - watchdog timer value
Table 32. Programmable watchdog timer. . . . . . . . . . . . .30
Table 33. Flag location in register Control_2 . . . . . . . . . .32
Table 34. Example values in register Control_2 . . . . . . . .32
Table 35. Example to clear only AF (bit 4) . . . . . . . . . . . .32
Table 36. Example to clear only MSF (bit 7). . . . . . . . . . .32
Table 37. Timestp_ctl - timestamp control register
PCF2129A_1
Product data sheet
Ordering information . . . . . . . . . . . . . . . . . . . . . .2
Marking codes . . . . . . . . . . . . . . . . . . . . . . . . . .2
Pin description of PCF2129A . . . . . . . . . . . . . .4
Register overview . . . . . . . . . . . . . . . . . . . . . . .6
Control_1 - control and status register 1
(address 00h) bit description . . . . . . . . . . . . . . .8
Control_2 - control and status register 2
(address 01h) bit description . . . . . . . . . . . . . . .9
Control_3 - control and status register 3
(address 0Fh) bit description . . . . . . . . . . . . . .10
CLKOUT_ctl - CLKOUT control register
(address 03h) bit description . . . . . . . . . . . . . . 11
Temperature measurement period . . . . . . . . . . 11
(address 19h) bit description . . . . . . . . . . . . . .13
register (address 03h) bit description . . . . . . . .22
bit description . . . . . . . . . . . . . . . . . . . . . . . . . .22
bit description . . . . . . . . . . . . . . . . . . . . . . . . .23
bit description . . . . . . . . . . . . . . . . . . . . . . . . . .23
(address 07h) bit description . . . . . . . . . . . . . .23
bit description . . . . . . . . . . . . . . . . . . . . . . . . . .24
bit description . . . . . . . . . . . . . . . . . . . . . . . . . .24
(address 0Ah) bit description . . . . . . . . . . . . . .27
(address 0Bh) bit description . . . . . . . . . . . . . .27
(address 0Ch) bit description . . . . . . . . . . . . . .27
(address 0Dh) bit description . . . . . . . . . . . . . .28
(address 0Eh) bit description . . . . . . . . . . . . . .28
register (address 10h) bit description . . . . . . .29
register (address 11h) bit description . . . . . . . .29
Rev. 01 — 13 January 2010
Table 38. Sec_timestp - second timestamp register
Table 39. Min_timestp - minute timestamp register
Table 40. Hour_timestp - hour timestamp register
Table 41. Day_timestp - day timestamp register
Table 42. Mon_timestp - month timestamp register
Table 43. Year_timestp - year timestamp register
Table 44. Battery switch-over and timestamp . . . . . . . . . 36
Table 45. Effect of bits MI and SI on pin INT and
Table 46. First increment of time circuits after
Table 47. Interface selection input pin IFS. . . . . . . . . . . . 44
Table 48. Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 49. Command byte definition . . . . . . . . . . . . . . . . . 46
Table 50. I
Table 51. Limiting values . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 52. Static characteristics . . . . . . . . . . . . . . . . . . . . 52
Table 53. Frequency characteristics . . . . . . . . . . . . . . . . 55
Table 54. SPI-bus characteristics . . . . . . . . . . . . . . . . . . 56
Table 55. I
Table 56. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 61
Table 57. Revision history . . . . . . . . . . . . . . . . . . . . . . . . 63
(address 12h) bit description . . . . . . . . . . . . . . 34
(address 13h) bit description . . . . . . . . . . . . . . 34
(address 14h) bit description . . . . . . . . . . . . . . 34
(address 15h) bit description . . . . . . . . . . . . . . 35
(address 16h) bit description . . . . . . . . . . . . . . 35
(address 17h) bit description . . . . . . . . . . . . . . 35
(address 18h) bit description . . . . . . . . . . . . . . 35
bit MSF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
stop release . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2
2
Integrated RTC, TCXO and quartz crystal
C slave address byte . . . . . . . . . . . . . . . . . . . 49
C-bus characteristics . . . . . . . . . . . . . . . . . . . 58
PCF2129A
© NXP B.V. 2010. All rights reserved.
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