參數(shù)資料
型號: HMS99C58S
廠商: Electronic Theatre Controls, Inc.
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH
中文描述: 8位單片機(jī)與嵌入式閃存微控制器
文件頁數(shù): 26/73頁
文件大?。?/td> 696K
代理商: HMS99C58S
HMS99C51S/52S/54S/56S/58S
22
Sep. 2004 Ver 1.01
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
Mode
T2CON
T2M
OD
T2C
ON
P1.
1/
T2
EX
Remarks
Input Clock
RCLK
or
TCLK
CP/
RL2
TR2
DCE
N
EXE
N2
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 over-
flow
reload trigger
(falling edge)
Down counting
Up counting
f
OSC
÷
12
Max.
f
OSC
÷
24
16-bit
Capture
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
Generator
1
1
X
X
1
1
X
X
0
1
X
no overflow
interrupt request
(TF2)
extra external
interrupt (“Timer
2”)
f
OSC
÷
12
Max.
f
OSC
÷
24
Off
X
X
0
X
X
X
Timer 2 stops
-
-
Table 5. Timer/Counter 2 Operating Modes
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