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SST31LF043A-300-4C-WI Datasheet(PDF) 7 Page - Silicon Storage Technology, Inc |
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SST31LF043A-300-4C-WI Datasheet(HTML) 7 Page - Silicon Storage Technology, Inc |
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7 / 26 page  Data Sheet 4 Mbit Flash + 1 Mbit or 256 Kbit SRAM ComboMemory SST31LF041 / SST31LF041A / SST31LF043 / SST31LF043A 7 ©2001 Silicon Storage Technology, Inc. S71107-03-000 5/01 349 TABLE 3: OPERATION MODES SELECTION Mode BES#1 BEF#1 OE# WE# A9 DQ Address Flash Read X2 VIL VIL VIH AIN DOUT AIN Program X VIL VIH VIL AIN DIN AIN Erase X VIL VIH VIL X X Sector address, XXH for Bank-Erase SRAM Read VIL VIH VIL VIH AIN DOUT AIN Write VIL VIH XVIL AIN DIN AIN Standby VIHC VIHC XX X High Z X Flash Write Inhibit X X VIL X X High Z / DOUT X XX X VIH XHigh Z / DOUT X XVIH XX X High Z / DOUT X Product Identification Hardware Mode X VIL VIL VIH VH Manufacturer’s ID (BFH) Device ID3 A18-A1=VIL, A0=VIL A18-A1=VIL, A0=VIH Software Mode X VIL VIL VIH AIN ID Code See Table 4 T3.9 349 1. BES# and BEF# cannot be asserted simultaneously. For SST31LF041A/043A BES# and OE# share pin 32. When flash is active, pin 32 becomes OE#. When flash is inactive, pin 32 becomes BES#. 2. X can be VIL or VIH, but no other value. 3. Device ID 17H for SST31LF041, 16H for SST31LF041A, 65H for SST31LF043 and 66H for SST31LF043A. TABLE 4: SOFTWARE COMMAND SEQUENCE Command Sequence 1st Bus Write Cycle 2nd Bus Write Cycle 3rd Bus Write Cycle 4th Bus Write Cycle 5th Bus Write Cycle 6th Bus Write Cycle Addr1 1. Address format A14-A0 (Hex),Address A15-A18 can be VIL or VIH, but no other value, for the Command sequence. Data Addr1 Data Addr1 Data Addr1 Data Addr1 Data Addr1 Data Byte-Program 5555H AAH 2AAAH 55H 5555H A0H BA2 2. BA = Program Byte address Data Sector-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H SAX3 3. SAX for Sector-Erase; uses A18-A12 address lines 30H Bank-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H 5555H 10H Software ID Entry4,5 4. The device does not remain in Software Product ID Mode if powered down. 5. With A18-A1 =0; SST Manufacturer’s ID= BFH, is read with A0 = 0, SST31LF041 Device ID = 17H, is read with A0 = 1, SST31LF041A Device ID = 16H, is read with A0 = 1 SST31LF043 Device ID = 65H, is read with A0 = 1 SST31LF043A Device ID = 66H, is read with A0 = 1 5555H AAH 2AAAH 55H 5555H 90H Software ID Exit 5555H AAH 2AAAH 55H 5555H F0H T4.7 349 |
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