參數(shù)資料
型號: W925E625
英文描述: Telephone Controller
中文描述: 電話控制器
文件頁數(shù): 41/71頁
文件大?。?/td> 1055K
代理商: W925E625
W925E/C625
8-bit CID Microcontroller
In the case where timer 0 clock input is FT, the desired frequency for BUZ output = FT / (255 –
preset value + 1) / 2 (HZ).
Revision : A6
-41-
Release Date : 2002/7/2
C/T = TMOD.2
(C/T = TMOD.6)
0
FT
Interrupt
T0 = P3.4
(T1 = P3.5)
TH0
(TH1)
TL0
(TL1)
TF0
(TF1)
TR0 = TCON.4
(TR1 = TCON.6)
GATE = TMOD.3
(GATE = TMOD.7)
INT0 = P3.2
(INT1 = P3.3)
7
0
TFx
7
0
PS: Functions of timer1 are shown in brackets
1
Fosc/4
Fosc/64
Fosc/1024
Fs
mux
TM0=CKCON1.2, CKCON1.3
(TM1=CKCON1.4, CKCON1.5)
1/2
KT
CKCON2.7
=ENBUZ
Pin BUZ
floating
Low
512Hz
1024Hz
2048Hz
mux
CKCON2.5, CKCON2.4
00
01
10
11
00
01
10
11
CKCON2.6
=BUZSL
From
Figure 6-6 Mode 2 of Timer/Counter 0 & 1
When F
T
equals 32768 Hz, depending on the preset value of TM0, the BUZ pin will output a
single tone signal in the tone frequency range from 64 Hz to 16384 Hz. The relation between the
tone frequency and the preset value of TM0 is shown in the table below.
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