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參數(shù)資料
| 型號(hào)： | W925E625 |
| 英文描述： | Telephone Controller |
| 中文描述： | 電話控制器 |
| 文件頁(yè)數(shù)： | 42/71頁(yè) |
| 文件大?。?/td> | 1055K |
| 代理商： | W925E625 |
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W925E/C625
8-bit CID Microcontroller
Revision : A6
-42-
Release Date : 2002/7/2
Table 5 The relation between the tone frequency and the preset value of TM0
3rd octave
4th octave
C
C
#
D
D
#
B
G
G
A
F
F
E
A
#
#
#
E
N
O
T
TM0 preset value
& BUZ frequency
5th octave
261.63
277.18
293.66
311.13
329.63
349.23
369.99
392.00
415.30
440.00
466.16
493.88
523.25
554.37
587.33
622.25
659.26
698.46
739.99
783.99
830.61
880.00
932.23
987.77
260.06
277.69
292.57
309.13
327.68
348.58
372.35
390.08
420.10
442.81
C1H
C5H
C8H
CBH
CEH
D1H
D4H
D6H
D9H
DDH
DBH
DF
H
468.11
496.48
E1H
E3H
E4H
E6H
E7H
E9H
EAH
EBH
ECH
EDH
EEH
EFH
528.51
564.96
585.14
630.15
655.36
712.34
744.72
780.19
819.20
862.84
910.22
963.76
130.81
138.59
146.83
155.56
164.81
174.61
185.00
196.00
207.65
220.00
233.08
246.94
83H
8AH
90H
97H
9DH
A2H
A7H
ACH
B1H
BAH
B6H
BEH
131.07
138.84
146.28
156.03
165.49
174.30
184.09
195.04
207.39
221.40
234.05
248.24
Tone
frequency
Tone
frequency
TM0 preset value
& BUZ frequency
Tone
frequency
TM0 preset value
& BUZ frequency
Note: Central tone is DB (440 Hz).
WATCHDOG TIMER
The Watchdog timer is a free-running timer that can be programmed by the user to serve as a
system monitor, a time-base generator or an event timer. It is basically a set of dividers that
divides the system clock. The divider output is selectable and determines the time-out interval. In
the condition of the timer-out expiring, the WDT interrupt and WDT reset may be executed if the
corresponding enable control bits are set. The interrupt will occur if the individual interrupt enable
and the global enable are set. The interrupt and reset functions are independent of each other
and may be used separately or together depending on the users software.
12
WD1,WD0
00
01
10
11
Interrupt
Reset
Enable Watchdog timer reset
EWT(WDCON.1)
Reset Watchdog
RWT (WDCON.0)
1
13
15
16
18
19
21
Time-out
selector
WDIF
WTRF
512 clock
delay
EWDI(EIE.5)
Fosc
Fsub
WFS(WDCON.4)
Figure 6-7 Watchdog Timer
The Watchdog timer should first be restarted by using RWT. This ensures that the timer starts
from a known state. The RWT bit is used to restart the watchdog timer. This bit is self clearing,
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| W925E625FG | 功能描述:IC MCU 8-BIT W/CID 160-PQFP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W925 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:- 程序存儲(chǔ)器類(lèi)型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| W925EP01 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT CID MICROCONTROLLER |
| W925EP01FG | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT CID MICROCONTROLLER |
| W925G240 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT CID MICROCONTROLLER |
| W925G625 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-bit CID MICROCONTROLLER |
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