參數資料
型號: C511
廠商: SIEMENS AG
元件分類: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件頁數: 21/43頁
文件大?。?/td> 692K
代理商: C511
C511 / C513
Semiconductor Group
21
Timer/ Counter 0 and 1
Timer/Counter 0 and 1 can be used in four operating modes as listed in
table 7
:
Table 7
Timer/Counter 0 and 1 operating modes
In “timer” function (C/T = ‘0’) the register is incremented every machine cycle. Therefore the count
rate is
f
OSC
/12.
In “counter” function the register is incremented in response to a 1-to-0 transition at its
corresponding external input pin (P3.4/T0, P3.5/T1). Since it takes two machine cycles to detect a
falling edge the max. count rate is
f
OSC
/24. External inputs INT0 and INT1 (P3.2, P3.3) can be
programmed to function as a gate to facilitate pulse width measurements.
Figure 7
illustrates the
input clock logic.
Figure 7
Timer/Counter 0 and 1 Input Clock Logic
Mode Description
TMOD
Input Clock
Gate
C/T
M1
M0
internal
f
OSC
/
12
×
32
external (max)
f
OSC
/
24
×
32
0
8-bit timer/counter with a
divide-by-32 prescaler
X
X
0
0
1
16-bit timer/counter
X
X
0
1
f
OSC
/
12
f
OSC
/
12
f
OSC
/
24
f
OSC
/
24
2
8-bit timer/counter with
8-bit auto-reload
X
X
1
0
3
Timer/counter 0 used as one
8-bit timer/counter and one
8-bit timer
Timer 1 stops
X
X
1
1
f
OSC
/
12
f
OSC
/
24
相關PDF資料
PDF描述
C511-RN 8-Bit CMOS Microcontroller
C511A-RN 8-Bit CMOS Microcontroller
C513-1RN 8-Bit CMOS Microcontroller
C513A-2RN 8-Bit CMOS Microcontroller
C513A-LM 8-Bit CMOS Microcontroller
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