NT6862 Datasheet, PDF (6/57 Pages) List of Unclassifed Manufacturers – 8-Bit Microcontroller for Monitor

NT6862-5xxxx
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
Accumulator 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
B D I ZC
Status Register P
Carry
1=TRUE
Zero
1=Result ZERO
IRQ Disable 1=DISABLE
Decimal Mode 1=TRUE
BRK Command 1=BRK
Overflow
1=TRUE
Negative
1=NEG
Figure 1.1. The 6502 CPU Registers and Status Flags
6