W741E20X Datasheet, PDF (7/84 Pages) Winbond – 4-BIT FLASH MICROCONTROLLER

Preliminary W741E20X
000H
16 bits
2048
address
TABH
TABL
ACC
-xxx xxxx xxyy
Offset
011x xxxx xxxx
600H
3210
7FFH
2048 x 16-bit
ROM address = 600H + Offset/4
This area can be used to store both instruction code
and look-up table
Each element (4 bits) of the look-up table
Figure 1. Program Memory Organization
Data Memory (RAM)
1. Architecture
The static data memory (RAM) used to store data is arranged as 128 × 4 bits. The data memory can
be addressed directly or indirectly. The organization of the data memory is shown in Figure 2.
4 bits
00H
: Working Register
0FH
128
address
7FH
128 x 4-bit
Figure 2. Data Memory Organization
Publication Release Date: March 1998
-7-
Revision A1