參數(shù)資料
型號(hào)： L8708H
廠商： ZiLOG, Inc.
英文描述： IR/Low-Voltage Microcontroller
中文描述： 紅外/低電壓微控制器
文件頁(yè)數(shù)： 31/66頁(yè)
文件大小： 599K
代理商： L8708H
Z86L88/81/86/87/89/73
IR/Low-Voltage Microcontroller
DS96LV00800
P R E L I M I N A R Y
31
1
CTR0 (D)00:
Counter/Timer8 Control Register.
CTR0: Counter/Timer8 Control Register Description
T8 Enable.
This field enables T8 when set (written) to 1.
Single/Modulo-N.
When set to 0 (modulo-n), the counter
reloads the initial value when the terminal count is
reached. When set to 1 (single pass), the counter stops
when the terminal count is reached.
Time-Out.
This bit is set when T8 times out (terminal count
reached). To reset this bit, a 1 should be written to this lo-
cation.
This is the only way to reset this status condi-
tion, therefore, care should be taken to reset this bit
prior to using/enabling the counter/timers
.
Note:
Care must be taken when utilizing the OR or AND
commands to manipulate CTR0, bit 5 and CTR1, bits 0
and 1 (Demodulation Mode). These instructions use a
Read-Modify-Write sequence in which the current status
from the CTR0 and CTR1 registers will be ORed or ANDed
with the designated value and then written back into the
registers. Example: When the status of bit 5 is 1, a timer
reset condition will occur.
T8 Clock.
Defines the frequency of the input signal to T8.
Capture_INT_Mask.
Set this bit to allow interrupt when
data is captured into either LO8 or HI8 upon a positive or
negative edge detection in demodulation mode.
Counter_INT_Mask.
Set this bit to allow interrupt when T8
has a time out.
P34_Out.
This bit defines whether P34 is used as a normal
output pin or the T8 output.
Field
Bit Position
Value
0*
1
0
1
0
1
0
1
0
1
0 0
0 1
1 0
1 1
0
1
0
1
0*
1
Description
T8_Enable
7-------
R
W
Counter Disabled
Counter Enabled
Stop Counter
Enable Counter
Modulo-N
Single Pass
No Counter Time-Out
Counter Time-Out Occurred
No Effect
Reset Flag to 0
SCLK
SCLK/2
SCLK/4
SCLK/8
Disable Data Capture Int.
Enable Data Capture Int.
Disable Time-Out Int.
Enable Time-Out Int.
P34 as Port Output
T8 Output on P34
Single/Modulo-N
-6-------
R/W
Time_Out
--5------
R
W
T8 _Clock
---43---
R/W
Capture_INT_MASK
-----2--
R/W
Counter_INT_Mask
------1-
R/W
P34_Out
-------0
R/W
Note:
* Indicates the value upon Power-On Reset.
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