參數(shù)資料
型號: NT68P81-D01014
廠商: Electronic Theatre Controls, Inc.
英文描述: USB Keyboard Micro-Controller
中文描述: USB鍵盤微控制器
文件頁數(shù): 5/30頁
文件大?。?/td> 1003K
代理商: NT68P81-D01014
NT68P81
5
Functional Description
1. 6502C CPU
The 6502C is an 8-bit CPU that provides 56 instructions, decimal and binary arithmetic, thirteen addressing modes, true
indexing capability, programmable stack pointer and variable length stack, a wide selection of addressable memory
range, and an interrupt input. Other features are also included.
The CPU clock cycle is 3MHz (6MHz system clock divided by 2). Please refer to 6502 data sheet for more detailed
information.
0
7
Accumulator A
Index Register Y
7
Index Register X
7
0
0
Stack Pointer SP
0
N
Status Register P
0
7
Carry
Zero
IRQ Disable
Decimal Mode
BRK Command
Overflow
Negative
7
Program Counter PCH
8
15
7
0
PCL
1 = TRUE
1 = Result ZERO
1 = DISABLE
1 = TRUE
1 = BRK
1 = TRUE
1 = NEG
V
B
D
I
Z
C
Figure 1. 6502 CPU Registers and Status Flags
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