參數(shù)資料
型號(hào)： SAK-XC164LM-16F20F
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP64
封裝： 0.50 MM PITCH, GREEN, PLASTIC, TQFP-64
文件頁(yè)數(shù)： 28/60頁(yè)
文件大?。?/td> 1415K
代理商： SAK-XC164LM-16F20F
XC164LM
Derivatives
Functional Description
Preliminary
Data Sheet
32
V1.1, 2006-08
3.7
Real Time Clock
The Real Time Clock (RTC) module of the XC164LM 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 XC164LM.
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 8
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.
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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