- 您現在的位置：買賣IC網 > PDF目錄363894 > W741L260 (WINBOND ELECTRONICS CORP) 4-BIT MICROCONTROLLER PDF資料下載
參數資料
| 型號： | W741L260 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT MICROCONTROLLER |
| 中文描述： | 4-BIT, MROM, 1 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 8/90頁 |
| 文件大小： | 480K |
| 代理商： | W741L260 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第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頁第86頁第87頁第88頁第89頁第90頁
W741L260
- 8 -
2. Page Register (PAGE)
The page register is organized as a 4-bit binary register. The bit descriptions are as follows:
R/W
R/W
R/W
R/W
0
1
2
3
PAGE
Note: R/W means read/write available.
Bit 3 is reserved.
Bit 2, Bit 1, Bit 0 Indirect addressing mode preselect bits:
000 = Page 0 (00H
0FH)
010 = Page 2 (20H
2FH)
100 = Page 4 (40H
4FH)
110 = Page 6 (60H
6FH)
001 = Page 1 (10H
1FH)
011 = Page 3 (30H
3FH)
101 = Page 5 (50H
5FH)
111 = Page 7 (70H
7FH)
Accumulator (ACC)
The accumulator (ACC) is a 4-bit register used to hold results from the ALU and transfer data
between the memory, I/O ports, and registers.
Arithmetic and Logic Unit (ALU)
This is a circuit which performs arithmetic and logic operations. The ALU provides the following
functions:
Logic operations: ANL, XRL, ORL
Branch decisions: JB0, JB1, JB2, JB3, JNZ, JZ, JC, JNC, DSKZ, DSKNZ, SKB0, SKB1, SKB2,
SKB3
Shift operations: SHRC, RRC, SHLC, RLC
Binary additions/subtractions: ADC, SBC, ADD, SUB, ADU, DEC, INC
After any of the above instructions are executed, the status of the carry flag (CF) and zero flag (ZF) is
stored in the internal registers. Otherwise CF can be stored or be read out by executing MOVA R, CF
or MOV CF, R.
Clock Generator
The W741L260 provides two oscillation circuits, main-oscillator and sub-oscillator. The main-oscillator
can select the crystal or RC oscillation circuit by option codes to generate the system clock through
external connections. If a crystal oscillator is used, a crystal or a ceramic resonator must be
connected to XIN1 and XOUT1, and a capacitor must be connected if an accurate frequency is
needed. When the oscillator is used, only low-frequency clock (32 KHz) can be selected for the
system clock by means of option codes. If the RC oscillator is used, a resistor must be connected to
XIN1 and XOUT1, and the high/low frequency clock option must be selected to suit the operation
frequency. The sub-oscillator must be connected to a 32.768 KHz crystal through XIN2 and XOUT2
external pins when the dual-clock operation mode is selected by option code. The connection is
shown in Figure 3. One machine cycle consists of a four-state system clock sequence and can run up
to 4
μ
S with a 1 MHz system clock.
相關PDF資料 |
PDF描述 |
|---|---|
| W742C810 | 4-BIT MICROCONTROLLER |
| W742C813 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| W742C814 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| W742E813 | 4-BIT MICROCONTROLLER |
| W742C81A | 4-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W7422-A | 制造商:Coilcraft Inc 功能描述:NOT RoHS. Transformer, for Motorola MC33374 |
| W742C(E)811 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-BIT MICROCONTROLLER |
| W742C0-DE-A1/B0/B8-HI | 制造商:Seoul Semiconductor 功能描述:P7 PURE WHITE - Tape and Reel |
| W742C810 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W742C811 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
發布緊急采購，3分鐘左右您將得到回復。