NT6861U View Datasheet(PDF) - Novatek Microelectronics

Part Name

Description

Manufacturer

NT6861U

8-Bit Microcontroller for Monitor

Novatek Microelectronics 

NT6861

Functional Descriptions

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 with variable length stack, a wide selection of addressable memory, and interrupt input

options.

The CPU clock cycle is 4MHz (8MHz system clock divided by 2). Refer to 6502 data sheet for more details.

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 Z C 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. 6502 CPU Registers and Status Flags

5

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