s71ws256nc0bawa30 Meet Spansion Inc., s71ws256nc0bawa30 Datasheet - Page 35

• Manufacturer Part Number: s71ws256nc0bawa30
• Description: Stacked Multi-chip Product Mcp 256/512/128 Megabit 32m/16m/8m X 16 Bit Cmos 1.8 Volt-only Simultaneous Read/write, Burst-mode Flash Memory With 128/64megabit 8m/4m X 16-bit Psram.
• Manufacturer: Meet Spansion Inc.

A d v a n c e
I n f o r m a t i o n
Table 10.12 Autoselect Exit
(LLD Function = lld_AutoselectExitCmd)
Cycle
Operation
Byte Address
Word Address
Data
Unlock Cycle 1
Write
base + XXXh
base + XXXh
0x00F0h
Notes:
1. Any offset within the device works.
2. BA = Bank Address. The bank address is required.
3. base = base address.
The following is a C source code example of using the autoselect function to read the manufac-
turer ID. Refer to the Spansion Low Level Driver User’s Guide (available on www.amd.com and
www.fujitsu.com) for general information on Spansion Flash memory software development
guidelines.
/* Here is an example of Autoselect mode (getting manufacturer ID) */
/* Define UINT16 example: typedef unsigned short UINT16; */
UINT16 manuf_id;
/* Auto Select Entry */
*( (UINT16 *)bank_addr + 0x555 ) = 0x00AA; /* write unlock cycle 1 */
*( (UINT16 *)bank_addr + 0x2AA ) = 0x0055; /* write unlock cycle 2 */
*( (UINT16 *)bank_addr + 0x555 ) = 0x0090; /* write autoselect command */
/* multiple reads can be performed after entry */
manuf_id = *( (UINT16 *)bank_addr + 0x000 ); /* read manuf. id */
/*
Autoselect exit */
*( (UINT16 *)base_addr + 0x000 ) = 0x00F0; /* exit autoselect (write reset command) */
September 15, 2005 S71WS-N_01_A4
S71WS-Nx0 Based MCPs
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