PCF2129AT datasheet(65/68 Pages) NXP

65 / 68 page

PCF2129A_1

Product data sheet

Rev. 01 — 13 January 2010

65 of 68

NXP Semiconductors

PCF2129A

Integrated RTC, TCXO and quartz crystal

22. Tables

Table 1.

Ordering information . . . . . . . . . . . . . . . . . . . . . .2

Table 2.

Marking codes . . . . . . . . . . . . . . . . . . . . . . . . . .2

Table 3.

Pin description of PCF2129A . . . . . . . . . . . . . .4

Table 4.

Table 5.

Control_1 - control and status register 1

(address 00h) bit description . . . . . . . . . . . . . . .8

Table 6.

Control_2 - control and status register 2

(address 01h) bit description . . . . . . . . . . . . . . .9

Table 7.

Control_3 - control and status register 3

(address 0Fh) bit description . . . . . . . . . . . . . .10

Table 8.

CLKOUT_ctl - CLKOUT control register

(address 03h) bit description . . . . . . . . . . . . . . 11

Table 9.

Temperature measurement period . . . . . . . . . . 11

Table 10. CLKOUT frequency selection . . . . . . . . . . . . . .12

Table 11. Aging_offset - crystal aging offset register

(address 19h) bit description . . . . . . . . . . . . . .13

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)

bit description . . . . . . . . . . . . . . . . . . . . . . . . . .22

Table 18. Hours - hours register (address 05h)

bit description . . . . . . . . . . . . . . . . . . . . . . . . .23

Table 19. Days - days register (address 06h)

bit description . . . . . . . . . . . . . . . . . . . . . . . . . .23

Table 20. Weekdays - weekdays register

(address 07h) bit description . . . . . . . . . . . . . .23

Table 21. Weekday assignments . . . . . . . . . . . . . . . . . . .23

Table 22. Months - months register (address 08h)

bit description . . . . . . . . . . . . . . . . . . . . . . . . . .24

Table 23. Month assignments in BCD format . . . . . . . . . .24

Table 24. Years - years register (address 09h)

bit description . . . . . . . . . . . . . . . . . . . . . . . . . .24

Table 25. Second_alarm - second alarm register

(address 0Ah) bit description . . . . . . . . . . . . . .27

Table 26. Minute_alarm - minute alarm register

(address 0Bh) bit description . . . . . . . . . . . . . .27

Table 27. Hour_alarm - hour alarm register

(address 0Ch) bit description . . . . . . . . . . . . . .27

Table 28. Day_alarm - day rearm register

(address 0Dh) bit description . . . . . . . . . . . . . .28

Table 29. Weekday_alarm - weekday alarm register

(address 0Eh) bit description . . . . . . . . . . . . . .28

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

(address 12h) bit description . . . . . . . . . . . . . . 34

Table 38. Sec_timestp - second timestamp register

(address 13h) bit description . . . . . . . . . . . . . . 34

Table 39. Min_timestp - minute timestamp register

(address 14h) bit description . . . . . . . . . . . . . . 34

Table 40. Hour_timestp - hour timestamp register

(address 15h) bit description . . . . . . . . . . . . . . 35

Table 41. Day_timestp - day timestamp register

(address 16h) bit description . . . . . . . . . . . . . . 35

Table 42. Mon_timestp - month timestamp register

(address 17h) bit description . . . . . . . . . . . . . . 35

Table 43. Year_timestp - year timestamp register

(address 18h) bit description . . . . . . . . . . . . . . 35

Table 44. Battery switch-over and timestamp . . . . . . . . . 36

Table 45. Effect of bits MI and SI on pin INT and

bit MSF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 46. First increment of time circuits after

stop release . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 47. Interface selection input pin IFS. . . . . . . . . . . . 44

Table 48. Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 49. Command byte definition . . . . . . . . . . . . . . . . . 46

Table 50. I2C slave address byte . . . . . . . . . . . . . . . . . . . 49

Table 51. Limiting values . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table 52. Static characteristics . . . . . . . . . . . . . . . . . . . . 52

Table 53. Frequency characteristics . . . . . . . . . . . . . . . . 55

Table 54. SPI-bus characteristics . . . . . . . . . . . . . . . . . . 56

Table 55. I2C-bus characteristics . . . . . . . . . . . . . . . . . . . 58

Table 56. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 61

Table 57. Revision history . . . . . . . . . . . . . . . . . . . . . . . . 63

PCF2129AT 数据表(PDF) 65 Page - NXP Semiconductors

PCF2129AT 数据表(HTML) 65 Page - NXP Semiconductors

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