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W741C260 Datasheet(PDF) 7 Page - Winbond |
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W741C260 Datasheet(HTML) 7 Page - Winbond |
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7 / 92 page  W741C260 Publication Release Date: March 1998 - 7 - Revision A3 3 2 1 0 7FFH 600H 2048 address 000H 16 bits 2048 x 16-bit ACC TABL TABH ROM address = 600H + Offset/4 Offset 0 1 1 x x x x x x x x x - x x x x x x x x x y y Each element (4 bits) of the look-up table This area can be used to store both instruction code and 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. Working Register 128 address 00H 4 bits 128 x 4-bit 7FH : 0FH Figure 2. Data Memory Organization The first sixteen addresses (00H to 0FH) in the data memory are known as the working registers (WR). The other data memory is used as general memory and cannot operate directly with immediate data. The relationship between data memory locations and the page register (PAGE) in indirect addressing mode is described in the next section. |
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