W742C810 データシートの表示（PDF） - Winbond

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W742C810

4-BIT MICROCONTROLLER

Winbond 

Preliminary W742C810

0000H

:

1st page

03FFH

0400H

:

07FFH

0800H

:

2nd page 0BFFH

0C00H

:

0FFFH

1000H

:

3rd page 13FFH

1400H

:

17FFH

1800H

:

4th page 1BFFH

1C00H

:

1FFFH

16 bits

Look-up Table address:

0000H

:

0FFFH

:

:

Look-up Table address:

2000H

:

2FFFH

Look-up Table address:

3000H

:

3FFFH

Look-up Table address:

4000H

:

4FFFH

Look-up Table address:

5000H

:

5FFFH

Look-up Table address:

6000H

:

6FFFH

Look-up Table address:

7000H

:

7FFFH

8192 * 16 bits

Each element (4 bits) of the look-up table

Look-up Table address:

1000H

:

1FFFH

Figure 6-1 Program Memory Organization

6.3.1 ROM Page Register (ROMPR)

The ROM page register is organized as a 4-bit binary register. The bit descriptions are as follows:

3

2

1

0

ROMPR

R/W R/W

Note: R/W means read/write available.

Bit 3 & Bit 2 is reserved.

Bit 1, Bit 0 ROM page preselect bits:

00 = ROM page 0 (0000H - 07FFH)

01 = ROM page 1 (0800H - 0FFFH)

10 = ROM page 2 (1000H - 17FFH)

11 = ROM page 3 (1800H - 1FFFH)

6.4 Data Memory (RAM)

6.4.1 Architecture

The static data memory (RAM) used to store data is arranged as 1024 × 4 bits. The data RAM is

divided into eight banks; each bank has 128 × 4 bits. Executing the MOV DBKR,WR or MOV

DBKR,#I instruction can determine which data bank is used. The data memory can be addressed

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