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參數(shù)資料
| 型號： | W742E |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機的小型通用紅外遙控器 |
| 文件頁數(shù)： | 40/66頁 |
| 文件大小： | 303K |
| 代理商： | W742E |
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Preliminary W742C(E)811
- 40 -
Figure 5-12 Timing of the Serial Input Function (SIP R)
(2) When the SOP R instruction is executed, the data will be loaded to the serial output buffer (SOB),
he low nibble data of SOB is from ACC register and the high nibble data is from RAM, and bit 3 of
port status register 2 (PSR2) will be set to "1" (BUSYO = 1). Then the P0.0 pin will send out 8
clocks or accept 8 clocks from external device and the data in SOB will be sent out at the rising or
falling edge of the P0.1 pin. After the 8 clocks have been sent, BUSYO will be reset to "0" and
EVF.5 will be set to "1." At this time, if IEF.5 has been set (IEF.5 = 1), an interrupt is executed; if
HEF.5 has been set (HEF.5 = 1), the hold state is terminated. Users can check the status of
PSR2.3 (BUSYO) to know whether the serial output process is completed or not. If a serial output
process is not completed, but the SOP R instruction is executed again, the data will be lost. The
timing is shown in Figure 5-13.
T1
T2
T3
T4
Data latch
BUSYO
(PSR2.3)
EVF5
Ins.
P0.1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
data changed at falling edge
NOTE: The serial clock frequency is fosc/2
SOP R
data changed at rising edge
Figure 5-13 Timing of the Serial Output Function (SOP R)
5.18.1 Port Status Register 2 (PSR2)
Port status register 2 is organized as 4-bit binary register (PSR2.0 to PSR2.3). PSR2 is controlled
by the MOVA R, PSR2, and CLR PSR2
instructions. The bit descriptions are as follows:
R
R
0
1
2
3
PSR2
Note: R means read only.
Bit 0 is reserved.
Bit 1 (BUSYI
):
Serial port input busy flag.
Bit 2 is reserved.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W7700A | *****GESTRICHEN***** |
| W7700B | KLEMME FUER FLACHKABEL BIS 40 ADERN |
| W7700C | KLEMME FUER FLACHKABEL BIS 64 ADERN |
| W3435G | LEITERPLATTENSOCKEL TO18/3P 5ST |
| W3437G | LEITERPLATTENSOCKEL TO5/393P 5ST |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W742E/C811 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4 BIT MICROCONTROLLER |
| W742E811 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| W742E813 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W742E816 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| W742E81A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
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