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S29GL032A Datasheet(PDF) 40 Page - SPANSION |
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S29GL032A Datasheet(HTML) 40 Page - SPANSION |
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40 / 95 page  40 S29GL-A S29GL-A_00_A11 September 10, 2007 Da ta Sh e e t 7.8 Autoselect Mode The autoselect mode provides manufacturer and device identification, and sector group protection verification, through identifier codes output on DQ7–DQ0. This mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programming algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires VID on address pin A9. Address pins A6, A3, A2, A1, and A0 must be as shown in Table 7.12. In addition, when verifying sector protection, the sector address must appear on the appropriate highest order address bits (see Table 7.4 on page 27 to Table 7.22 on page 45). Table 7.12 shows the remaining address bits that are don’t care. When all necessary bits are set as required, the programming equipment may then read the corresponding identifier code on DQ7–DQ0. To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 10.2 on page 61 and Table 10.1 on page 62. This method does not require VID. Refer to Autoselect Command Sequence on page 53 for more information. Legend L = Logic Low = VIL H = Logic High = VIH SA = Sector Address X = Don’t care. Table 7.12 Autoselect Codes, (High Voltage Method) Description CE# OE# WE# A22 to A15 A14 to A10 A9 A8 to A7 A6 A5 to A4 A3 to A2 A1 A0 DQ8 to DQ15 DQ7 to DQ0 Model Number BYTE# = VIH BYTE# = VIL X1, X2, R8, R9 X3, X4 R5, R6, R7 Manufacturer ID: Spansion Products LL H X X VID X L X L L L 00 X 01h 01h 01h Cycle 1 LL H X X VID XLX LL H 22 X 7Eh 7Eh 7Eh Cycle 2 H H L 22 X 0Ch 10h 13h Cycle 3 H H H 22 X 01h 00h (-R4, bottom boot) 01h (-R3, top boot) 01h Cycle 1 LL H X X VID XLX LL H 22 X 7Eh 7Eh Cycle 2 H H L 22 X 1Dh 1Ah Cycle 3 H H H 22 X 00h 00h (-R4/W4, bottom boot) 01h (-R3/W3, top boot) Cycle 1 L L H X X VID XX XX L H 22 X 49h (-R2/02/W2, bottom boot) C4h (-R1/01/W1, top boot) Sector Group Protection Verification LL H SA X VID XLX L H L X X 01h (protected), 00h (unprotected) Secured Silicon Sector Indicator Bit (DQ7), WP# protects highest address sector LL H X X VID XLX L H H X X For S29GL064A and S29GL032A: 99h (factory locked), 19h (not factory locked) For S29GL016A: 94h (factory locked), 14h (not factory locked) Secured Silicon Sector Indicator Bit (DQ7), WP# protects lowest address sector LL H X X VID XLX L H H X X For S29GL064A and S29GL032A: 89h (factory locked), 09h (not factory locked) For S29GL016A: 84h (factory locked), 04h (not factory locked) |
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