參數(shù)資料
型號: SAB-C504-2R40M
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP44
文件頁數(shù): 21/49頁
文件大小: 962K
代理商: SAB-C504-2R40M
Semiconductor Group
21
C504
Timer 2
Timer 2 is a 16-bit Timer/Counter with an up/down count feature. It can operate either as timer or as
an event counter which is selected by bit C/T2 (T2CON.1). It has three operating modes as shown
in
table 5
.
Note:
=
falling edge
Table 5
Timer/Counter 2 Operating Modes
Mode
T2CON
T2MOD
DCEN
T2CON
EXEN
P1.1/
T2EX
Remarks
Input Clock
R
×
CLK
or
T
×
CLK
0
CP/
RL2
TR2
internal
external
(P1.0/T2)
16-bit
Auto-
reload
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
1
X
X
X
0
1
reload upon
overflow
reload trigger
(falling edge)
Down counting
Up counting
f
OSC
/12
max
f
OSC
/24
16-bit
Cap-
ture
0
0
1
1
1
1
X
X
0
1
X
16 bit Timer/
Counter (only
up-counting)
capture TH2,
TL2
RC2H,
RC2L
f
OSC
/12
max
f
OSC
/24
Baud
Rate
Gene-
rator
1
1
X
X
1
1
X
X
0
1
X
no overflow
interrupt
request (TF2)
extra external
interrupt
(“Timer 2”)
f
OSC
/2
max
f
OSC
/24
off
X
X
0
X
X
X
Timer 2 stops
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