S71WS512NB0BAEZZ0 SPANSION [SPANSION], S71WS512NB0BAEZZ0 Datasheet - Page 55

• Manufacturer Part Number: S71WS512NB0BAEZZ0
• Description: Stacked Multi-Chip Product (MCP) Flash Memory and pSRAM CMOS 1.8 Volt
• Manufacturer: SPANSION [SPANSION]

June 28, 2004 S71WS512NE0BFWZZ_00_A1
Enter SecSi™ Sector/Exit SecSi Sector Command Sequence
Word Program Command Sequence
The system must write the reset command to return to the read mode (or erase-
suspend-read mode if the bank was previously in Erase Suspend).
The SecSi Sector region provides a secured data area containing a random, eight
word electronic serial number (ESN). The system can access the SecSi Sector re-
gion by issuing the three-cycle Enter SecSi Sector command sequence. The
device continues to access the SecSi Sector region until the system issues the
four-cycle Exit SecSi Sector command sequence. The Exit SecSi Sector command
sequence returns the device to normal operation. The SecSi Sector is not acces-
sible when the device is executing an Embedded Program or embedded Erase
algorithm. The
data requirements for both command sequences.
Programming is a four-bus-cycle operation. The program command sequence is
initiated by writing two unlock write cycles, followed by the program set-up com-
mand. The program address and data are written next, which in turn initiate the
Embedded Program algorithm. The system is not required to provide further con-
trols or timings. The device automatically provides internally generated program
pulses and verifies the programmed cell margin.
Device ID, Word 2
Device ID, Word 3
Indicator Bits
Description
A d v a n c e
S29WSxxxN MirrorBit™ Flash Family For Multi-chip Products (MCP)
"Command Definition
Table 17. Autoselect Addresses
(BA) + 0Eh
(BA) + 0Fh
(BA) + 03h
Address
I n f o r m a t i o n
Summary" section shows the address and
DQ4 & DQ3 - WP# Protection Boot Code
00 = WP# Protects both Top Boot and
1 = Locked, 0 = Not Locked
1 = Locked, 0 = Not Locked
(DQ1 = Lock Register DQ4)
(DQ0 = Lock Register DQ3)
1 = Unlocked (user option)
DQ1 - DYB Power up state
0 = Standard Handshake
DQ6 -Customer Lock Bit
DQ7 - Factory Lock Bit
DQ0 - PPB Eraseability
Bottom Boot Sectors,
DQ5 - Handshake Bit
0 = Locked (default)
0 = Erase disabled
1 = Erase allowed
DQ15 - DQ8 = 0
2230 (WS256N)
01 = Reserved,
10 = Reserved
11 = Reserved
1 = Reserved,
Read Data
DQ2 = 0
2200
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