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參數(shù)資料
| 型號： | SAB-XC167CI-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, PQFP144 |
| 封裝： | 0.50 MM PITCH, PLASTIC, TQFP-144 |
| 文件頁數(shù)： | 33/80頁 |
| 文件大?。?/td> | 2477K |
| 代理商： | SAB-XC167CI-16F20F |
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XC167
Derivatives
Functional Description
35
V1.1, 2003-06
Preliminary
3.9
Real Time Clock
The Real Time Clock (RTC) module of the XC167 is directly clocked via a separate clock
driver either with the on-chip auxiliary oscillator frequency (
fRTC = fOSCa) or with the
prescaled on-chip main oscillator frequency (
fRTC = fOSCm/32). It is therefore
independent from the selected clock generation mode of the XC167.
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. Additionally, T14 can generate a separate node
request.
Figure 9
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.
m c b04805_x c.vs d
T1 4R E L
T14
T14-R egister
CNT-R egister
RE L-Reg ister
1 0 B its
6 B its
10 B its
1 0 B its
6 B its
10 B its
In terrup t S u b N o d e
CNT
IN T0
CN T
IN T1
CNT
IN T 2
CNT
IN T3
RT CINT
1
0
8
RUN
PR E
f
RT C
MU X
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