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C511 Datasheet(PDF) 22 Page - Siemens Semiconductor Group

Part # C511
Description  8-Bit CMOS Microcontroller
PDF  43 Pages
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Manufacturer  SIEMENS [Siemens Semiconductor Group]
Direct Link  http://www.siemens.com/
Logo SIEMENS - Siemens Semiconductor Group

C511 Datasheet(HTML) 22 Page - Siemens Semiconductor Group

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Semiconductor Group
22
C511 / C513
Timer / Counter 2 (not available in the C511/C511A)
Timer 2 is a 16-bit Timer/Counter with 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 8.
Table 8
Timer/Counter 2 Operating Modes
Note:
↓ =
falling edge
Mode
T2CON
T2MOD
DCEN
T2CON
EXEN
P1.1/
T2EX
Remarks
Input Clock
R
×CLK
or
T
×CLK
CP/
RL2
TR2
internal
external
(P1.0/T2)
16-bit
Auto-
reload
0
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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