参数资料
型号: P83CL884T
厂商: NXP Semiconductors N.V.
英文描述: TELX microcontrollers for CT0 handset/basestation applications
中文描述: TELX微控制器CT0手机/基站应用
文件页数: 15/32页
文件大小: 145K
代理商: P83CL884T
15
Philips Semiconductors
Product specification
TELX microcontrollers for CT0
handset/basestation applications
P8xCL883; P8xCL884
6.3.2
T
IMER
/C
OUNTER
2 C
ONTROL
R
EGISTER
(T2CON)
Table 6
Timer/Counter 2 Control Register (SFR address C8H)
Table 7
Description of T2CON bits
Table 8
Timer 2 operating modes
7
6
5
4
3
2
1
0
TF2
EXF2
COMP
ECOMP
EXEN2
TR2
C/T2
CP/RL2
BIT
SYMBOL
DESCRIPTION
7
TF2
Timer 2 overflow flag.
TF2 is set by a Timer 2 overflow and must be cleared by
software.
Timer 2 external flag.
EXF2 is set when either a capture or reload is caused by a
negative transition on T2EX and when EXEN2 = 1. When Timer T2 interrupt is enabled,
EXF2 = 1 will cause the CPU to vector to Timer 2 interrupt routine. EXF2 must be
cleared by software.
Interrupt flag
. When a match between the 16-bit compare register (COMP2L and
COMP2H) and the new counter value of timer T2 occurs, the interrupt flag COMP in
register T2CON and port bit P1.2 are toggled.
Enable compare output bit.
When set by software, the controller toggles port bit P1.2
(T2COMP) when a compare match occurs.
Timer 2 external enable flag.
When set, allows a capture or reload to occur as a result
of a negative transition on T2EX. EXEN2 = 0 causes Timer 2 to ignore events at T2EX.
Timer 2 start/stop control.
Control bit for Timer 2.
Timer 2 timer or counter select.
C/T2 = 0 selects the internal timer with a clock
frequency of
1
6
f
osc
. C/T2 = 1 selects the external event counter; negative
edge-triggered.
Capture/reload flag.
When set captures will occur on negative transitions at T2EX, if
EXEN2 = 1. When cleared, auto-reloads will occur either with Timer 2 overflows or
negative transitions at T2EX when EXEN2 = 1.
6
EXF2
5
COMP
4
ECOMP
3
EXEN2
2
1
TR2
C/T2
0
CP/RL2
ECOMP
CP/RL2
TR2
MODE
0
0
1
1
1
0
0
1
0
1
0
0
1
1
1
1
0
0
16-bit Auto-reload
16-bit Capture
16-bit Compare
16-bit Capture and Compare
16-bit Compare with Auto-reload
off
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