MTV212MV64 View Datasheet(PDF) - Myson Century Inc

Part Name

Description

Manufacturer

MTV212MV64

8051 Embedded Monitor Controller MTP Type

Myson Century Inc 

MYSON

TECHNOLOGY

MTV212M64

(Rev. 1.2)

FUNCTIONAL DESCRIPTIONS

1. 8051 CPU Core

MTV212M includes all 8051 functions with the following exceptions:

1.1 PSEN, ALE, RD and WR pins are disabled. The external RAM access is restricted to XFRs within the

MTV212M.

1.2 Port0, port3.3, port3.6 and port3.7 are not general-purpose I/O ports. They are dedicated to monitor

special application.

1.3 INT1 input pin is not provided, it is connected to special interrupt sources.

1.4 Port2 are shared with special function pins.

In addition, there are 2 timers, 5 interrupt sources and serial interface compatible with the standard 8051.

Note: All registers listed in this document reside in external RAM area (XFR). For internal RAM memory map

please refer to 8051 spec.

2. Memory Allocation

2.1 Internal Special Function Registers (SFR)

The SFR is a group of registers that are the same as standard 8051.

2.2 Internal RAM

There are total 256 bytes internal RAM in MTV212M, same as standard 8052.

2.3 External Special Function Registers (XFR)

The XFR is a group of registers allocated in the 8051 external RAM area 00h - 7Fh. Most of the registers are

used for monitor control or PWM DAC. Program can initialize Ri value and use "MOVX" instruction to access

these registers.

2.4 Auxiliary RAM (AUXRAM)

There are total 768 bytes auxiliary RAM allocated in the 8051 external RAM area 80h - FFh. The AUXRAM is

divided into six banks, selected by XBANK register. Program can initialize Ri value and use "MOVX"

instruction to access the AUXRAM.

FFh Internal RAM

SFR

Accessible by

indirect

addressing only

(Using

MOV A,@Ri

instruction)

80h

7Fh Internal RAM

Accessible by

direct addressing

Accessible by

direct and indirect

addressing

00h

Revision 1.2

- 5-

2000/07/04

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