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NUC120-VD1E Datasheet(Fiches technique) 44 Page - Nuvoton Technology Corporation

Numéro de pièce NUC120-VD1E
Description  ARM Cortex™-M0 32-BIT MICROCONTROLLER
Télécharger  89 Pages
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Fabricant  NUVOTON [Nuvoton Technology Corporation]
Site Internet  http://www.nuvoton.com
Logo NUVOTON - Nuvoton Technology Corporation

NUC120-VD1E Datasheet(HTML) 44 Page - Nuvoton Technology Corporation

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NuMicro
™ NUC120 Data Sheet
Publication Release Date: Jan. 2, 2012
- 44 -
Revision V2.03
5.8
5.8.
RTC is from an external 32.768 kHz low speed crystal connected at pins X32I and
z low speed oscillator output
econd, minute, hour) in Time
onth, year) in Calendar Loading
Register (CLR). The data message is expressed in BCD format. It also offers alarm function that
user can preset the alarm time in Time Alarm Register (TAR) and alarm calendar in Calendar
AR).
eriodic Time Tick and Alarm Match interrupts. The periodic interrupt
8, 1/4, 1/2 and 1 second which are selected by
an
int
Time Tick and Alarm Match can cause chip wake-
nction is enabled (TWKE (TTR[3])=1).
5.8.2
Alarm register (second, minute, hour, day, month, year)
electable
tions 1/128, 1/64, 1/32, 1/16, 1/8, 1/4, 1/2
Support RTC Time Tick and Alarm Match interrupt
Support wake-up chip from power down mode
Real Time Clock (RTC)
1
Overview
Real Time Clock (RTC) controller provides user the real time and calendar message. The clock
source of
X32O (reference to pin descriptions) or from an external 32.768 kH
fed at pin X32I. The RTC controller provides the time message (s
Loading Register (TLR) as well as calendar message (day, m
Alarm Register (C
The RTC controller supports p
has 8 period options 1/128, 1/64, 1/32, 1/16, 1/
TTR (TTR[2:0]). When RTC counter in TLR and CLR is equal to alarm setting time registers TAR
d CAR, the alarm interrupt flag (RIIR.AIF) is set and the alarm interrupt is requested if the alarm
errupt is enabled (RIER.AIER=1). Both RTC
up from power down mode if wake-up fu
Features
There is a time counter (second, minute, hour) and calendar counter (day, month, year) for
user to check the time
12-hour or 24-hour mode is s
Leap year compensation automatically
Day of week counter
Frequency compensate register (FCR)
All time and calendar message is expressed in BCD code
Support periodic time tick interrupt with 8 period op
and 1 second


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