- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363896 > W78C354 (WINBOND ELECTRONICS CORP) MONITOR MICROCONTROLLER PDF資料下載
參數(shù)資料
| 型號： | W78C354 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MONITOR MICROCONTROLLER |
| 中文描述： | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數(shù)： | 27/44頁 |
| 文件大?。?/td> | 426K |
| 代理商： | W78C354 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當(dāng)前第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
W78C354
Publication Release Date: October 1996
- 27 -
Revision A1
L. PWM DACs
There are two 12-bit and fourteen 8-bit PWM static DACs and one 12-bit and three 8-bit PWM
dynamic DACs on this chip. The number of the PWM outputs is different with the package.
68-PIN PLCC
48-PIN DIP
40-PIN DIP
8-bit SDAC
14
8 + 4*
8 + 4*
12-bit SDAC
2
1
1
8-bit DDAC
3
3
1
12-bit DDAC
1
1
1
Note : 4* : the SDAC
S
share with P2.4~P2.7
L-1.1 14-channel 8-bit PWM Static DAC
The static DACs (SDAC0 to 13) are used to generate DC voltage control (0 to 5V) by an RC circuit,
as shown in Figure 8, and to execute the "MOV SDACn, #Value" instruction. There are 14 registers,
corresponding to the 14 channels of 8-bit PWM output. The unused PWM channel can be used as an
output pin, since 0 or 5V can be obtained from the pin.
Duty cycle of the PWM output = Preset value of SDACn
ò
255, where n = 0 to 13
DC voltage after low-pass filter = V
CC
×
duty cycle
SDAC0
SDAC13: 8-bit PWM static DAC registers storing preset values
PRESET VALUE
0
1
n
255
DUTY CYCLE
0/255
1/255
n/255
255/255
DC VOLTAGE
0V
1/255
×
5V
n/255
×
5V
+5V
PWM frequency F
PWM
= F
CLOCK
ò
255
Fclock
16 MHz
18.432 MHz
20 MHz
F
PWM
62.745 KHz
72.282 KHz
78.431 KHz
T
PWM
15.94
μ
S
13.83
μ
S
12.75
μ
S
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W78CE354 | MONITOR MICROCONTROLLER |
| W78CE354E | MONITOR MICROCONTROLLER |
| W78CE354P | MONITOR MICROCONTROLLER |
| W78C374 | MONITOR MICROCONTROLLER |
| W78C374B | MONITOR MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W78C374 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:MONITOR MICROCONTROLLER |
| W78C374B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:MONITOR MICROCONTROLLER |
| W78C374P | 制造商:WINBOND 制造商全稱:Winbond 功能描述:MONITOR MICROCONTROLLER |
| W78C378 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:MONITOR MICROCONTROLLER |
| W78C378P | 制造商:WINBOND 制造商全稱:Winbond 功能描述:MONITOR MICROCONTROLLER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。