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PCF85363ATL/AX 数据表(PDF) 49 Page - NXP Semiconductors |
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PCF85363ATL/AX 数据表(HTML) 49 Page - NXP Semiconductors |
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49 / 86 page  NXP Semiconductors PCF85363A Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input, and I2C-bus Bit Symbol Value Description 11 once per hour Table 52. PI[1:0] bits - Function control register (address 28h)...continued [1] Default value. The periodic interrupt mode can be used to enable pre-defined timers for generating pulses on the interrupt pin. Interrupts once per second, once per minute or once per hour can be generated. When disabled, the timers are reset. When enabled, the time to the first pulse is between the chosen period and the chosen period minus 1 seconds. The timers are not affected by STOP. When the periodic interrupt triggers, the PIF (PI flag) in the Flags register (Section 7.14) is set. The flag does not have to be cleared to allow another INTA or INTB pulse. The duration of the periodic interrupt is unaffected by offset calibration. See Section 7.9 for a description of interrupt pulse control and output pins. 7.13.3 RTCM: RTC mode Bit Symbol Value Description RTC mode 0[1] real-time clock mode 4 RTCM 1 stop-watch mode Table 53. RTCM bit - Function control register (address 28h) [1] Default value. The RTC mode is used to control how the time is counted. When configured as a classic RTC, then time is counted from 100th seconds to years. In stop-watch mode, time is counted from 100th seconds to 999 999 hours. RTCM Mode Time counting 0 RTC 100th seconds[1], seconds, minutes, hours, days, weekdays, months, years 1 stop-watch 100th seconds[1], seconds, minutes, hours (0 hours to 999 999 hours) Table 54. RTC time counting modes [1] Enabled with 100TH bit in the Function register (Section 7.13). 7.13.4 STOPM: STOP mode control Bit Symbol Value Description STOP mode 0[1] RTC stop is controlled by STOP bit only 3 STOPM 1 RTC stop is controlled by STOP bit or TS pin Table 55. STOPM bit - Function control register (address 28h) PCF85363A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 3.1 — 18 June 2021 49 / 86 |
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