- 您現(xiàn)在的位置：買(mǎi)賣IC網(wǎng) > PDF目錄363908 > W921E840 (WINBOND ELECTRONICS CORP) 4-Bit Microcontroller(4位的微控制器) PDF資料下載
參數(shù)資料
| 型號(hào)： | W921E840 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-Bit Microcontroller(4位的微控制器) |
| 中文描述： | 4-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁(yè)數(shù)： | 37/64頁(yè) |
| 文件大小： | 603K |
| 代理商： | W921E840 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)當(dāng)前第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)
W921E840
Publication Publication Release Date: August 1997
- 37 - Revision A1
6.12.2 Interrupt Enable Flag
When the interrupt is enabled by the event, the program counter will jump to the interrupt address and
the enable interrupt flag (ENINT) bit0 is cleared, at the same time, all the interrupt will be disabled.
The only way to enable the interrupt again is to set the ENINT bit0 or execute the RTNI instruction.
ENINT register: (address = 034H, default data = 0H)
b3
b1
b0
1: Enable all interrupt
Reserved
Reserved
When the interrupt is enabled by the event, the individual interrupt request signal is cleared by the
hardware automatically, but the other interrupt request signals will remain the same condition. The
only method of resetting the interrupt request signal is to execute the instruction CLR EVF, #I, it is a 2
words / 2 cycles instruction; the format of the immediate data is shown below.
i3
i2
i1
i0
1: TM2 interrupt request signal is cleared
1: TM1 interrupt request signal is cleared
1: TM0 interrupt request signal is cleared
1: TM3 interrupt request signal is cleared
i4
i5
i6
i7
1: Serial port interrupt request signal is cleared
1: P4.0 to P4.2 interrupt request signal is cleared
1: INT0 pin interrupt request signal is cleared
1: Comparator interrupt request signal is cleared
6.13 Operating Mode
There are three types of operating mode in this chip
normal mode, hold mode and stop mode.
6.13.1 Normal Mode
All functions works well and the
μ
C operates according to the clock generated by the system clock.
6.13.2 Hold Mode
In hold mode, all operations of
μ
C cease, except for the operation of the oscillator, timer/counter,
serial port and interrupt active pins. The
μ
C enters hold mode when the HOLD instruction is executed.
The hold mode can be released only by the RESET pin or the interrupt request signal. Before The
device enters the hold mode, the hold mode release flag1, 2, 3 (HMRF1, 2, 3, address = 036H, 037H,
038H) must be set to define the hold mode release conditions. If interrupt condition is met and
enabled in hold mode, the interrupt will be accepted to release hold mode and jump to interrupt vector
to execute interrupt service routine. For more details, refer to the following flags and flow chart.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W921E880 | 4-Bit Microcontroller(4位的微控制器) |
| W921F840 | 4-Bit Microcontroller(4位的微控制器) |
| W9310 | Direct Sequence Spread Spectrum Transceiver(直接序列擴(kuò)展頻譜收發(fā)器) |
| W9320 | ADPCM Codec(ADPCM編解碼器) |
| W9321 | ADPCM Codec(ADPCM編解碼器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W921E840A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W921E843A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W921E880 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W921E880A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W925C240 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Controller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。