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AM49DL640AG85IS Folha de dados(PDF) 11 Page - Advanced Micro Devices |
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AM49DL640AG85IS Folha de dados(HTML) 11 Page - Advanced Micro Devices |
11 / 65 page 10 Am49DL640AG April 1, 2003 PR E L I M I N A R Y Table 1. Device Bus Operations—Flash Word Mode, CIOf = V IH Legend: L = Logic Low = V IL, H = Logic High = VIH, VID = 11.5–12.5 V, VHH = 9.0 ± 0.5 V, X = Don’t Care, SADD = Flash Sector Address, AIN = Address In, DIN = Data In, DOUT = Data Out, pSRAM = Pseudo SRAM Notes: 1. Other operations except for those indicated in this column are inhibited. 2. Do not apply CE#f = V IL, CE1#s = VIL and CE2s = VIH at the same time. 3. Don’t care or open LB#s or UB#s. 4. If WP#/ACC = V IL, the boot sectors will be protected. If WP#/ACC = VIH the boot sectors protection will be removed. If WP#/ACC = V ACC (9V), the program time will be reduced by 40%. 5. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector/Sector Block Protection and Unprotection” section. 6. If WP#/ACC = V IL, the two outermost boot sectors remain protected. If WP#/ACC = VIH, the two outermost boot sector protection depends on whether they were last protected or unprotected using the method described in “Sector/Sector Block Protection and Unprotection”. If WP#/ACC = V HH, all sectors will be unprotected. Operation (Notes 1, 2) CE#f CE1#s CE2s OE# WE# Addr. LB#s UB#s RESET# WP#/ACC (Note 4) DQ7– DQ0 DQ15– DQ8 Read from Flash L HX LH A IN XX H L/H D OUT D OUT XL Write to Flash L HX HL A IN XX H (Note 4) D IN D IN XL Standby V CC ± 0.3 V HX XX X X X V CC ± 0.3 V H High-Z High-Z XL Output Disable L L H HH X L X H L/H High-Z High-Z HH X X L Flash Hardware Reset X HX X X X X X L L/H High-Z High-Z XL Sector Protect (Note 5) L HX HL SADD, A6 = L, A1 = H, A0 = L XX V ID L/H D IN X XL Sector Unprotect (Note 5) L HX HL SADD, A6 = H, A1 = H, A0 = L XX V ID (Note 6) D IN X XL Temporary Sector Unprotect X HX XX X X X V ID (Note 6) D IN High-Z XL Read from pSRAM H L H L H A IN LL HX D OUT D OUT H L High-Z D OUT LH D OUT High-Z Write to pSRAM H L H X L A IN LL HX D IN D IN H L High-Z D IN LH D IN High-Z |
Nº de peça semelhante - AM49DL640AG85IS |
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Descrição semelhante - AM49DL640AG85IS |
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