參數(shù)資料
型號(hào)： HE847701
廠商： King Billion Electronics Co., Ltd.
英文描述： 8-bit Micro-controller
中文描述： 8位微控制器
文件頁(yè)數(shù)： 19/29頁(yè)
文件大?。?/td> 438K
代理商： HE847701
King Billion Electronics Co., Ltd
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HE847701
HE80000 SERIES
March 26, 2004
This specification is subject to change without notice. Please contact sales person for the latest version before use.
Page 19 of 29
V1.03
11
strongest
SGKY24
SGKY25
SGKY26
SGKY27
SCNO0
SCNO1
SCNO2
SCNO3
SGKY41
SGKY42
SGKY43
SCNO17
SCNO18
SCNO19
PRTC4
SCNI0
PRTC5
SCNI1
PRTC6
SCNI2
PRTC7
SCNI3
47K
47K
47K
47K
47K
47K
47K
:
....
11.
Timer1
The Timer1 consists of two 8-bit write-only preload registers T1H and T1L and 16-bit down counter. If
Timer1 is enabled, the counter will decrement by one with each incoming clock pulse. Timer1 interrupt
will be generated when the counter underflows - counts down to FFFFH. And the counter will be
automatically reloaded with the value of T1H and T1L.
The clock source of Timer1 is derived from slow clock “SCK” at dual clock or slow clock only mode.
And it comes from the fast clock “FCK” at fast clock only mode.
Please note that the interrupt is generated when counter counts from 0000H to FFFFH. If the value of
T1H and T1L is N, and count down to FFFFH, the total count is N+1. The content of counter is zero
when system resets. Once it is enabled to count at this moment, interrupt will be generated immediately
and value of T1H and T1L will be loaded since it counts to FFFFH. So the T1H and T1L value should be
set before enabling Timer1.
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