NXP Semiconductors PCF2123 manuals

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When we buy new device such as NXP Semiconductors PCF2123 we often through away most of the documentation but the warranty. Very often issues with NXP Semiconductors PCF2123 begin only after the warranty period ends and you may want to find how to repair it or just do some service work. Even oftener it is hard to remember what does each function in Network Card NXP Semiconductors PCF2123 is responsible for and what options to choose for expected result. Fortunately you can find all manuals for Network Card on our side using links below.

52 pages603.39 Kb

UM10301
- User Manual for NXP Real Time Clocks PCF85x3, PCA8565 and PCF2123, PCA2125
  - Rev. 01 23 December 2008 User manual
- 2Contact information
  - NXP Semiconductors UM10301
- 31. Introduction
- 42. Features
- 63. Comparison
  - 3.1 Event counter mode
    - 7
    - User Manual PCF85x3, PCA8565 and PCF2123, PCA2125
- 84. Power-on reset (POR)
- 5. Voltage-low detector
- 96. Oscillator
  - 10NXP Semiconductors UM10301
  - CC
  - 13
  - - CC C+ +
    - =
      - 1 =
      - 11 RC
      - Q=
      - 11 RC
      - Qa=
- () ()
- 14() ()
  - - H Cf
    - RCf
    - - L11234 101.2327682
      - 1 2
      - 1
      - =
      - =
      - 42053 1055101.2327682
      - 1 2
      - 1
      - =
      - =
      - =
  - - Q
      - 6.1 Oscillation allowance
    - 15R
      - 6.2 Using an external oscillator
  - 167. Crystal and crystal selection
    - 177.1 Modes which dont work
    - 7.2 Effect of temperature
  - ()
- 18[
  - [
  - ]
- ]
  - [
  - ]
    - ()
      - 1
        
        +=
        ff f
        f
    - () ()
      - ++= TTB
      - TTB
      - 198. Capacitors and capacitor selection
      - 209. Accuracy
      - 2210. Oscillator tuning
        2410.1 PCF2123 Offset register
      - 2511. Century and leap year, Daylight Saving Time
        11.1 Century tracking
        11.2 Year and leap year tracking
        11.3 Daylight Saving Time (DST)
      - 2612. Initialization and setting of alarm and timer
        12.1 Initialization of the RTC and setting the time
        
        User Manual PCF85x3, PCA8565 and PCF2123, PCA2125
        
        2712.2 Alarm
        2912.3 Setting the timer
        NXP Semiconductors UM10301
      - 3013. Backup power supply
        13.1 Lithium Primary cells
        3213.2 NiCd and NiMH secondary batteries
        3313.3 Capacitors
        3413.3.1 Charging the backup capacitor
        13.3.2 Estimation of backup time with capacitor
    - 35(
    - )
      - VVC t
      - =
      - ()
        13.4 Diode selection
      - 3614. PCB layout guidelines
      - 3815. Partial circuit switch down
      - 3916. Hints to keep power consumption low
        d
        =
        0005 . 0 03 . 0 6 . 4 10 85 . 8
        0007.0
        A C
        40
        t R
        41109.148473.0
        109.148473.0
        C
        =
        =
        C
        =
        t R
        10300 8473 . 0
        t R
        101 8473 . 0
      - 4317. First period inaccuracy when using the timer
      - 4518. Timing requirements for I2C read and write
      - 46I
      - C interface Time counters
      - Pre-scaler
      - Watchdog
      - 4819. Troubleshooting
        19.1 Oscillator startup time
        19.2 Checking for oscillation
        4919.3 No communication via I2C-bus
        19.4 Wrong time and date, wrong clock speed
      - 5020. References
        User manual Rev. 01 23 December 2008 51 of 52
      - 5121. Legal information
        21.1 Definitions
        21.2 Disclaimers
        21.3 Trademarks
      - 5222. Contents