NT68F62 Datasheet, PDF (6/57 Pages) List of Unclassifed Manufacturers – 8-Bit Microcontroller for Monitor (32K Flash MTP Type)

NT68F62
Functional Description
1. 6502 CPU
The 6502 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 ranges,
and interrupt input options.
The CPU clock cycle is 4MHz (8MHz system clock divided by 2). Please refer to the 6502 data sheet for more detailed
information.
7
0
Accumnlator A
7
0
Index Register Y
7
0
Index Register X
15
8
Program Counter PCH
PCL
7
0
7
0
Stack Pointer SP
7
NV
0
BD I ZC
Status Register P
Carry
Zero
IRQ Disable
Decimal Mode
BRK Command
Overflow
Negative
1=TRUE
1=Result ZERO
1=DISABLE
1=TRUE
1=BRK
1=TRUE
1=NEG
Figure 1.1. The 6502 CPU Registers and Status Flags
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