參數(shù)資料
型號: SAK-C164CH-8FM
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
封裝: 0.65 MM PITCH, METRIC, PLASTIC, QFP-80
文件頁數(shù): 19/74頁
文件大?。?/td> 917K
代理商: SAK-C164CH-8FM
&
Data Sheet
24
1999-08
Real Time Clock
The Real Time Clock (RTC) module of the C164 consists of a chain of 3 divider blocks,
a fixed 8:1 divider, the reloadable 16-bit timer T14, and the 32-bit RTC timer (accessible
via registers RTCH and RTCL). The RTC module is directly clocked with the on-chip
oscillator frequency divided by 32 via a separate clock driver (
I
RTC = IOSC / 32) and is
therefore independent from the selected clock generation mode of the C164. All timers
count up.
The RTC module can be used for different purposes:
System clock to determine the current time and date
Cyclic time based interrupt
48-bit timer for long term measurements
Figure 7
RTC Block Diagram
Note: The registers associated with the RTC are not effected by a reset in order to
maintain the correct system time even when intermediate resets are executed.
RTCL
T14
T14REL
8:1
f
RTC
Reload
Interrupt
Request
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