W742E816 Просмотр технического описания (PDF) - Winbond
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W742E816 Datasheet PDF : 58 Pages
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W742E/C816
Deleted: SA5505
Deleted: W742C811
0000H
:
07FFH
0800H
:
0FFFH
1000H
:
17FFH
1800H
:
1FFFH
2000H
:
27FFH
2800H
:
2FFFH
3000H
:
37FFH
3800H
:
3FFFH
16 bits
Page 0
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
16384 * 16 bits
4000H
:
47FFH
4800H
:
4FFFH
5000H
:
57FFH
5800H
:
5FFFH
6000H
:
67FFH
6800H
:
6FFFH
7000H
:
77FFH
7800H
:
7FFFH
16 bits
Page 8
:
:
Page A
:
:
Page C
:
:
Page E
:
:
16384 * 16 bits
Each element (4 bits)
of the look-up table
Page 9
Page B
Page D
Page F
All Program memory can be used to store instruction code,
but the look-up table just can be stored in the lower half ROM (4000H - 7FFFH).
Figure 5-1 Program Memory Organization
5.3.1 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 R/W R/W
Note: W means write only.
Bit 3, Bit 2, Bit 1, Bit 0 ROM page bits:
0000 = ROM page 0 (0000H − 07FFH)
0001 = ROM page 1 (0800H − 0FFFH)
0010 = ROM page 2 (1000H − 17FFH)
0011 = ROM page 3 (1800H − 1FFFH)
0100 = ROM page 4 (2000H − 27FFH)
0101 = ROM page 5 (2800H − 2FFFH)
1000 = ROM page 8 (4000H − 47FFH)
1001 = ROM page 9 (4800H − 4FFFH)
1010 = ROM page A (5000H − 57FFH)
1011 = ROM page B (5800H − 5FFFH)
1100 = ROM page C (6000H − 67FFH)
1101 = ROM page D (6800H − 6FFFH)
Publication Release Date: April 15, 2005
-9-
Revision A2
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