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參數資料
| 型號： | W742C813 |
| 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, MROM, 3.58 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 20 MM, 2.75 MM HEIGHT, QFP-100 |
| 文件頁數： | 16/56頁 |
| 文件大小： | 455K |
| 代理商： | W742C813 |
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W742E/C813
- 16 -
3. Indirect Addressing
Example:
MOV DBKRL,BL_value
MOV DBKRH,BH_value
MOV PAGE,#Ip
MOV WRq,#In
MOV WRn,@WRq
Bit 12-0 12 11 10 9 8 7 6 5 4 3 2 1 0
BH1 BH0 BL3 BL2 BL1 BL0 DP2 DP1 DP0 (WA3 WA2 WA1 WA0)
RAM addr
(WA0-3) is Working register contents ; DP0-3 is RAM page register(PAGE)
BL0-3 is DBKRL register ; BH0-1 is DBKRH register
; set RAM bank
; set RAM page address, (0-07H)
; set WR pointer address; (0-0FH)
; get the contents of WRq pointing addr to WRn
5.5 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.
5.6 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 is executed, the status of the carry flag (CF) and zero flag (ZF) is
stored in the internal registers. CF can be read out by executing MOV R, CF.
5.7 Main Oscillator
The W742E/C813 provides a crystal oscillation circuit to generate the system clock through external
connections. The 3.58 MHz or 400 KHz crystal must be connected to XIN1 and XOUT1, and a
capacitor must be connected to XIN1 and V
SS
if an accurate frequency is needed.
XIN1
XOUT1
Crystal
3.58MHz
Figure 5-3 System clock oscillator Configuration
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相關代理商/技術參數 |
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|---|---|
| W742C814 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4 BIT MICROCONTROLLER |
| W742C816 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| W742C818 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| W742C81A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W742CE811 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
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