- 您現在的位置：買賣IC網 > PDF目錄363895 > W77E516F-25 (WINBOND ELECTRONICS CORP) 8-BIT MICROCONTROLLER PDF資料下載
參數資料
| 型號： | W77E516F-25 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | QFP-44 |
| 文件頁數： | 61/85頁 |
| 文件大小： | 596K |
| 代理商： | W77E516F-25 |
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頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁當前第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁
Preliminary W77E516
Publication Release Date: August 16, 2002
- 61 -
Revision A1
Auto-reload Mode, Counting Up/Down
Timer/Counter 2 will be in auto-reload mode as an up/down counter if CP/RL2 bit in T2CON is
cleared and the DCEN bit in T2MOD is set. In this mode, Timer/Counter 2 is an up/down counter
whose direction is controlled by the T2EX pin. A 1 on this pin cause the counter to count up. An
overflow while counting up will cause the counter to be reloaded with the contents of the capture
registers. The next down count following the case where the contents of Timer/Counter equal the
capture registers will load an FFFFh into Timer/Counter 2. In either event a reload will set the TF2
bit. A reload will also toggle the EXF2 bit. However, the EXF2 bit can not generate an interrupt while
in this mode.
C/T = T2CON.1
1/4
1/12
T2M = CKCON.5
Down Counting Reload Value
T2CON.7
Up Counting Reload Value
T2 = P1.0
T2CON.6
TR2 = T2CON.2
T2EX = P1.1
EXF2
Timer 2
Interrupt
TF2
TH2
TL2
RCAP2H
RCAP2L
1
0
0
1
0FFh
0FFh
DCEN = 1
Clock Source
Mode input
div. by 4 osc/1
div. by 64 osc/16
div. by 1024 osc/256
Figure 16. 16-Bit Auto-reload Up/Down Counter
Baud Rate Generator Mode
The baud rate generator mode is enabled by setting either the RCLK or TCLK bits in T2CON
register. While in the baud rate generator mode, Timer/Counter 2 is a 16 bit counter with auto
reload when the count rolls over from FFFFh. However, rolling over does not set the TF2 bit. If
EXEN2 bit is set, then a negative transition of the T2EX pin will set EXF2 bit in the T2CON register
and cause an interrupt request.
C/T = T2CON.1
0
T2 = P1.0
T2CON.6
TR2 = T2CON.2
T2EX = P1.1
EXEN2 = T2CON.3
EXF2
Timer 2
overflow
Timer 2
Interrupt
TH2
TL2
RCAP2H
RCAP2L
1
Clock Source
Mode input
div. by 4 osc/2
div. by 64 osc/32
div. by 1024 osc/512
Figure 17. Baud Rate Generator Mode
相關PDF資料 |
PDF描述 |
|---|---|
| W77E516F-40 | 8-BIT MICROCONTROLLER |
| W77E516P-25 | 8-BIT MICROCONTROLLER |
| W77E516P-40 | 8-BIT MICROCONTROLLER |
| W77E532 | 8 BIT MICROCONTROLLER |
| W77E58 | 8 BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W77E516F-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77E516P-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77E516P-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77E532 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77E532_07 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
發布緊急采購，3分鐘左右您將得到回復。