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參數(shù)資料
| 型號(hào)： | W83L951DG |
| 廠商： | Nuvoton Technology Corporation of America |
| 文件頁(yè)數(shù)： | 43/112頁(yè) |
| 文件大小： | 0K |
| 描述： | IC EMBEDDED CNTRLR 128-LQFP |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | W83 |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 24MHz |
| 連通性： | 主機(jī)接口，PS/2，SMBus，UART/USART |
| 外圍設(shè)備： | PWM，WDT |
| 輸入/輸出數(shù)： | 104 |
| 程序存儲(chǔ)器容量： | 64KB（64K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 2K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x10b; D/A 2x8b |
| 振蕩器型： | 外部 |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 128-LQFP |
| 包裝： | 托盤 |
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W83L951DG/W83L951FG
- 32 -
6.1.1
Register Description
6.1.1.1
Program Status Word Register (PSW) (Default Value: 0000_0000)
Bit7: Carry Flag (CY):
Set for an arithmetic operation, which results in a carry being generated from the ALU. It is also used
as the accumulator for the bit operations.
Bit6: Auxiliary Carry (AC):
Set when the previous operation resulted in a carry (during addition) or borrow (during subtraction)
from the high order nibble.
Bit5: User Flag 0 (F0):
General-purpose flag can be set or cleared by the user by software.
Bit4~3: Register bank selects bits (RS1, RS0):
RS1
RS0
Register bank
Address Range
0
00-07h
0
1
08-0Fh
1
0
2
10-17h
1
3
18-1Fh
Bit2: Overflow Flag (OV):
Set when a carry was generated from the seventh bit but not from the 8th bit as a result of the
previous operation or vice-versa.
Bit1: User Flag 1 (F1):
General-purpose flag that can be set or cleared by the user by software
Bit0: Parity flag (P):
Set/cleared by hardware to indicate odd/even number of 1's in the accumulator.
Please refer to MCS-8051 define in detail.
6.1.1.2
Accumulator Register (ACC) (Default Value: 0000_0000)
Bit7~0: Accumulator (A)
The A or ACC register is the standard 8032 accumulator. Please refer to MCS-8051 define in detail.
6.1.1.3
B Register (B) (Default Value: 0000_0000)
Bit7~0: B
The B register is the standard 8032 accumulator. Please refer to MCS-8051 define in detail.
6.1.1.4
Stack Pointer Register (SP) (Default Value: 0000_0111)
Bit7~0: Stack Pointer
The Stack Pointer stores the Scratch-pad RAM address where the stack begins. In other words it
always points to the top of the stack. Note: The address range is 00h~FFh.
Please refer to MCS-8051 define in detail.
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