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參數(shù)資料
| 型號： | 29F002B-90 |
| 廠商： | Macronix International Co., Ltd. |
| 英文描述： | 2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 中文描述： | 200萬位[256K × 8]的CMOS閃存 |
| 文件頁數(shù)： | 16/51頁 |
| 文件大?。?/td> | 622K |
| 代理商： | 29F002B-90 |
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16
REV. 1.5, MAR. 28, 2005
P/N: PM0547
MX29F002/002N T/B
CHIP UNPROTECT WITH 12V SYSTEM
The MX29F002T/B also features the chip unprotect mode,
so that all sectors are unprotected after chip unprotect is
completed to incorporate any changes in the code. It is
recommended to protect all sectors before activating chip
unprotect mode.
To activate this mode, the programming equipment must
force VID on control pin OE and address pin A9. The CE
pins must be set at VIL. Pins A6 must be set to VIH.(see
Table 2) Refer to chip unprotect algorithm and waveform
for the chip unprotect algorithm. The unprotection
mechanism begins on the falling edge of the WE pulse and
is terminated on the rising edge.
It is also possible to determine if the chip is unprotected in
the system by writing the Read Silicon ID command.
Performing a read operation with A1=VIH, it will produce
00H at data outputs(Q0-Q7) for an unprotected sector. It is
noted that all sectors are unprotected after the chip
unprotect algorithm is completed.
SECTOR PROTECTION WITHOUT 12V SYSTEM
The MX29F002T/B also feature a hardware sector protection
method in a system without 12V power supply. The
programming equipment do not need to supply 12 volts to
protect sectors. The details are shown in sector protect
algorithm and waveform.
CHIP UNPROTECT WITHOUT 12V SYSTEM
The MX29F002T/B also feature a hardware chip unprotection
method in a system without 12V power supply. The
programming equipment do not need to supply 12 volts to
unprotect all sectors. The details are shown in chip
unprotect algorithm and waveform.
POWER-UP SEQUENCE
The MX29F002T/B powers up in the Read only mode. In
addition, the memory contents may only be altered after
successful completion of a two-step command sequence.
Vpp and Vcc power up sequence is not required.
ABSOLUTE MAXIMUM RATINGS
RATING
Ambient Operating Temperature
Storage Temperature
Applied Input Voltage
Applied Output Voltage
VCC to Ground Potential
A9
VALUE
0
o
C to 70
o
C
-65
o
C to 125
o
C
-0.5V to 7.0V
-0.5V to 7.0V
-0.5V to 7.0V
-0.5V to 13.5V
NOTICE:
Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for
extended period may affect reliability.
NOTICE:
Specifications contained within the following tables are subject to
change.
相關PDF資料 |
PDF描述 |
|---|---|
| 29F002T-12 | 2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F002T-55 | 2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F002T-70 | 2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F002T-90 | 2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F004B-55 | 4M-BIT [512KX8] CMOS FLASH MEMORY |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 29F002T-12 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F002T-55 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F002T-70 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F002T-90 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:2M-BIT [256K x 8] CMOS FLASH MEMORY |
| 29F004B-55 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:4M-BIT [512KX8] CMOS FLASH MEMORY |
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