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AMC001CFLKA 데이터시트(PDF) 9 Page - Advanced Micro Devices |
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AMC001CFLKA 데이터시트(HTML) 9 Page - Advanced Micro Devices |
9 / 42 page 5/4/98 AmC0XXCFLKA 9 Table 3. Even Byte Command Definitions (Note 5) * Address for Memory Segment 0 (S0) only. Address for the higher even memory segments (S2–S18) = (Addr) + (N/2)* 100000H where N = Memory Segment number (0) for 1 Mbyte, N = (0, 2) for 2 Mbyte, N = (0, 2, 4, 6) for 4 Mbyte, N = (0…18) for 10 Mbyte. Notes: 1. Address bit A16 = X = Don’t Care for all address commands except for Program Address (PA), Read Address (RA) and Sector Address (SA). 2. Bus operations are defined in Table 1. 3. RA = Address of the memory location to be read. PA = Address of the memory location to be programmed. Addresses are latched on the falling edge of the WE pulse. SA = Address of the sector to be erased. The combination of A17, A18, A19 will uniquely select any sector of a segment. To select the memory segment:1 and 2 Mbyte: Use CE1 and A20 4 Mbyte: Use CE1 and A20, A21 10 Mbyte: Use CE1 and A20–A23. 4. RD = Data read from location RA during read operation. PD = Data to be programmed at location PA. Data is latched on the rising edge of WE pulse. 5. A0 = 0 and CE1 = 0 Embedded Command Sequence Bus Write Cycles Req’d First Bus Write Cycle Second Bus Write Cycle Third Bus Write Cycle Fourth Bus Read/Write Cycle Fifth Bus Write Cycle Sixth Bus Write Cycle Addr* Data Addr* Data Addr* Data Addr* Data Addr* Data Addr* Data Reset/Read 4 AAAAH AAH 5554H 55H AAAAH F0H RA RD Autoselect 4 AAAAH AAH 5554H 55H AAAAH 90H 00H/02H 01H/A4H Byte Write 4 AAAAH AAH 5554H 55H AAAAH A0H PA PD Segment Erase 6 AAAAH AAH 5554H 55H AAAAH 80H AAAAH AAH 5554H 55H AAAAH 10H Sector Erase 6 AAAAH AAH 5554H 55H AAAAH 80H AAAAH AAH 5554H 55H SA 30H Sector Erase Suspend Erase can be suspended during sector erase with Addr (don’t care), Data (B0H) Sector Erase Resume Erase can be resumed after suspend with Addr (don’t care), Data (30H) |
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