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參數資料
| 型號： | W742S81A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4-BIT, FLASH, 3.58 MHz, MICROCONTROLLER, PQFP100 |
| 文件頁數： | 19/47頁 |
| 文件大小： | 242K |
| 代理商： | W742S81A |
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W742S81A
Publication Release Date: March 2003
- 19 -
Revision A1
W
W
W
W
0
1
2
3
MR1
Note: W means write only.
Bit 0 = 0 The internal fundamental frequency of Timer 1 is F
OSC
.
= 1 The internal fundamental frequency of Timer 1 is F
OSC
/64.
Bit 1 = 0 The fundamental frequency source of Timer 1 is the internal clock.
= 1 The fundamental frequency source of Timer 1 is the sub-oscillator frequency Fs (32768 Hz).
Bit 2 is reserved.
Bit 3 = 0 Timer 1 stops down-counting.
= 1 Timer 1 starts down-counting.
MFP control pin is organized as a 4-bit binary register.
W
0
1
2
3
BUZCR
Note: W means write only.
Bit 0 = 0 The specified waveform of the MFP generator is delivered to the MFP output pin.
= 1 The specified frequency of Timer 1 is delivered to the MFP output pin.
Bit 1, Bit 2 & Bit 3 are reserved.
6.13 Interrupts
The W742S81A provides four internal interrupt sources (Divider 0, Divider 1, Timer 0, Timer 1) and one
external interrupt source (port RC). Vector addresses for each of the interrupts are located in the range of
program memory (ROM) addresses 004H to 020H. The flags IEF, PEF, and EVF are used to control the
interrupts. When EVF is set to "1" by hardware and the corresponding bits of IEF and PEF have been set
by software, an interrupt is generated. When an interrupt occurs, all of the interrupts are inhibited until the
EN INT or MOV IEF,#I instruction is invoked. The interrupts can also be disabled by executing the DIS
INT instruction. When an interrupt is generated in hold mode, the hold mode will be released momentarily
and interrupt subroutine will be executed. After the RTN instruction is executed in an interrupt subroutine,
the
μ
C will enter hold mode again. The operation flow chart is shown in Figure
6-9. The control diagram is shown in Figure 6-9.
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| W742S82A | 4-BIT TELEPHONE CONTROLLER |
| W74IE20X | 4-BIT FLASH MICROCONTROLLER |
| W741E202 | 4-BIT FLASH MICROCONTROLLER |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W742S82A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT TELEPHONE CONTROLLER |
| W7-48D12 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48D15 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48D5 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48S12 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
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