參數(shù)資料
型號： PTPS65910A1RSL
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： POWER SUPPLY SUPPORT CKT, PQCC48
封裝： 6 X 6 MM, 1 MM HEIGHT, GREEN, PLASTIC,VQFN-48
文件頁數(shù)： 40/89頁
文件大小： 941K
代理商： PTPS65910A1RSL
PRODUCTPREVIEW
Biasing
and
amplitude
control
32 kHz to
digital block
VRTC
OSC32KOUT
OSC32KIN
SWCS046-013
www.ti.com
SWCS046C – MARCH 2010 – REVISED JUNE 2010
Figure 13. Crystal Oscillator 32-kHz Clock
RTC
The RTC, which is driven by the 32-kHz clock, provides the alarm and timekeeping functions. The RTC is kept
supplied when the device is in the OFF or the BACKUP state.
The main functionalities of the RTC block are:
Time information (seconds/minutes/hours) directly in binary-coded decimal (BCD) format
Calendar information (Day/Month/Year/Day of the week) directly in BCD code up to year 2099
Programmable
interrupts
generation:
The
RTC
can
generate
two
interrupts:
a
timer
interrupt
RTC_PERIOD_IT periodically (1s/1m/1h/1d period) and an alarm interrupt RTC_ALARM_IT at a precise time
of the day (alarm function). These interrupts are enabled using IT_ALARM and IT_TIMER control bits.
Periodically interrupts can be masked during the SLEEP period to avoid host interruption and are
automatically unmasked after SLEEP wakeup (using the IT_SLEEP_MASK_EN control bit).
Oscillator frequency calibration and time correction
Copyright 2010, Texas Instruments Incorporated
45
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