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參數(shù)資料
| 型號(hào)： | SAB-XC164SM-8F40F |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | PLASTIC, TQFP-64 |
| 文件頁(yè)數(shù)： | 29/66頁(yè) |
| 文件大?。?/td> | 613K |
| 代理商： | SAB-XC164SM-8F40F |
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XC164SM
Derivatives
Functional Description
Data Sheet
33
V1.0, 2005-11
3.8
Real Time Clock
The Real Time Clock (RTC) module of the XC164SM is directly clocked via a separate
clock driver with the prescaled on-chip main oscillator frequency (
f
RTC = fOSCm/32). It is
therefore independent from the selected clock generation mode of the XC164SM.
The RTC basically consists of a chain of divider blocks:
A selectable 8:1 divider (on - off)
The reloadable 16-bit timer T14
The 32-bit RTC timer block (accessible via registers RTCH and RTCL), made of:
– a reloadable 10-bit timer
– a reloadable 6-bit timer
– a reloadable 10-bit timer
All timers count up. Each timer can generate an interrupt request. All requests are
combined to a common node request.
Figure 3-7
RTC Block Diagram
Note: The registers associated with the RTC are not affected by a reset in order to
maintain the correct system time even when intermediate resets are executed.
The RTC module can be used for different purposes:
CNT-Register
REL-Register
10 Bits
6 Bits
10 Bits
T14
MCB05568
T14-Register
Interrupt Sub Node
RTCINT
MUX
8
PRE
RUN
CNT
INT3
CNT
INT2
CNT
INT1
CNT
INT0
f
CNT
f
RTC
T14REL
10 Bits
6 Bits
10 Bits
:
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