參數(shù)資料
型號(hào)： S29AL016M90FFI012
廠商： SPANSION LLC
元件分類(lèi)： PROM
英文描述： 16 MEGABIT (2M X 8 BIT / I M X 16 BIT) 3.0 VOLT ONLY BOOT SECTOR FLASH MEMORY
中文描述： 1M X 16 FLASH 3V PROM, 90 ns, PBGA64
封裝： 13 X 11 MM, LEAD FREE, FBGA-64
文件頁(yè)數(shù)： 18/62頁(yè)
文件大小： 1850K
代理商： S29AL016M90FFI012
October 11, 2006 S29AL016M_00_A7
S29AL016M
23
Data
Sheet
Hardware Data Protection
The command sequence requirement of unlock cycles for programming or erasing
provides data protection against inadvertent writes (refer to Tables 10–11 for
command definitions). In addition, the following hardware data protection mea-
sures prevent accidental erasure or programming, which might otherwise be
caused by spurious system level signals during VCC power-up and power-down
transitions, or from system noise.
Low VCC Write Inhibit
When VCC is less than VLKO, the device does not accept any write cycles. This pro-
tects data during VCC power-up and power-down. The command register and all
internal program/erase circuits are disabled, and the device resets. Subsequent
writes are ignored until VCC is greater than VLKO. The system must provide the
proper signals to the control pins to prevent unintentional writes when VCC is
greater than VLKO.
Write Pulse “Glitch” Protection
Noise pulses of less than 5 ns (typical) on OE#, CE# or WE# do not initiate a write
cycle.
Table 9. Primary Vendor-Specific Extended Query
Addresses
(Word Mode)
Addresses
(Byte Mode)
Data
Description
40h
41h
42h
80h
82h
84h
0050h
0052h
0049h
Query-unique ASCII string “PRI”
43h
86h
0031h
Major version number, ASCII
44h
88h
0033h
Minor version number, ASCII
45h
8Ah
0008h
Address Sensitive Unlock (Bit 1–0)
0b = Required, 1b = Not Required
Process Technology (Bits 7–2)
0010b = 0.23 m MirrorBit
46h
8Ch
0002h
Erase Suspend
0 = Not Supported, 1 = To Read Only, 2 = To Read & Write
47h
8Eh
0001h
Sector Protect
0 = Not Supported, X = Number of sectors in per group
48h
90h
0001h
Sector Temporary Unprotect
00 = Not Supported, 01 = Supported
49h
92h
0004h
Sector Protect/Unprotect scheme
04 = Standard Mode
4Ah
94h
0000h
Simultaneous Operation
00 = Not Supported, 01 = Supported
4Bh
96h
0000h
Burst Mode Type
00 = Not Supported, 01 = Supported
4Ch
98h
0000h
Page Mode Type
00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page
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