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S29JL064H55TFI002 Datasheet(PDF) 10 Page - SPANSION |
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S29JL064H55TFI002 Datasheet(HTML) 10 Page - SPANSION |
10 / 64 page 10 S29JL064H S29JL064HA1 March 26, 2004 Pr el i m i n ary Device Bus Operations This section describes the requirements and use of the device bus operations, which are initiated through the internal command register. The command register itself does not occupy any addressable memory location. The register is a latch used to store the commands, along with the address and data information needed to execute the command. The contents of the register serve as inputs to the internal state machine. The state machine outputs dictate the function of the device. Table 1 lists the device bus operations, the inputs and control levels they require, and the resulting output. The following subsections describe each of these operations in further detail. Table 1. S29JL064H Device Bus Operations Legend: L = Logic Low = VIL, H = Logic High = VIH, VID = 11.5–12.5 V, VHH = 9.0 ± 0.5 V, X = Don’t Care, SA = Sector Address, AIN = Address In, DIN = Data In, DOUT = Data Out Notes: 1. Addresses are A21:A0 in word mode (BYTE# = VIH), A21:A-1 in byte mode (BYTE# = VIL). 2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector/Sector Block Protection and Unprotection” section. 3. If WP#/ACC = VIL, sectors 0, 1, 140, and 141 remain protected. If WP#/ACC = VIH, protection on sectors 0, 1, 140, and 141 depends on whether they were last protected or unprotected using the method described in “Sector/Sector Block Protection and Unprotection”. If WP#/ACC = VHH, all sectors will be unprotected. Operation CE# OE# WE# RESET# WP#/ACC Addresses (Note 2) DQ15–DQ8 DQ7– DQ0 BYTE# = VIH BYTE# = VIL Read L L H H L/H AIN DOUT DQ14–DQ8 = High- Z, DQ15 = A-1 DOUT Write L H L H (Note 3) AIN DIN DIN Standby VCC ± 0.3 V X X VCC ± 0.3 V L/H X High-Z High-Z High-Z Output Disable L H H H L/H X High-Z High-Z High-Z Reset X X X L L/H X High-Z High-Z High-Z Sector Protect (Note 2) L H L VID L/H SA, A6 = L, A1 = H, A0 = L X X DIN Sector Unprotect (Note 2) L H L VID (Note 3) SA, A6 = H, A1 = H, A0 = L X X DIN Temporary Sector Unprotect X X X VID (Note 3) AIN DIN High-Z DIN |
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