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The MT28F004B3 (x8) and MT28F400B3 (x16/x8) are nonvolatile, electrically block-erasable (flash), programmable memory devices containing 4,194,304 bits organized as 262,144 words (16 bits) or 524,288 bytes (8 bits). Writing or erasing the device is done with either a 3.3V or 5V VPP voltage, while all operations are performed with a 3.3V VCC. Due to process technology advances, 5V VPP is optimal for application and production programming. These devices are fabricated with Micron’s advanced 0.18µm CMOS floating-gate process.
The MT28F004B3 and MT28F400B3 are organized into seven separately erasable blocks. To ensure that critical firmware is protected from accidental erasure or overwrite, the devices feature a hardware-protected boot block. Writing or erasing the boot block requires either applying a super-voltage to the RP# pin or driving WP# HIGH in addition to executing the normal write or erase sequences. This block may be used to store code implemented in low-level system recovery. The remaining blocks vary in density and are written and erased with no additional security measures.
FEATURES
• Seven erase blocks:
16KB/8K-word boot block (protected)
Two 8KB/4K-word parameter blocks
Four main memory blocks
• Smart 3 technology (B3):
3.3V ±0.3V VCC
3.3V ±0.3V VPP application programming
5V ±10% VPP application/production programming1
• Compatible with 0.3µm Smart 3 device
• Advanced 0.18µm CMOS floating-gate process
• Address access time: 80ns
• 100,000 ERASE cycles
• Industry-standard pinouts
• Inputs and outputs are fully TTL-compatible
• Automated write and erase algorithm
• Two-cycle WRITE/ERASE sequence
• Byte- or word-wide READ and WRITE
(MT28F400B3, 256K x 16/512K x 8)
• Byte-wide READ and WRITE only
(MT28F004B3, 512K x 8)
• TSOP and SOP packaging options
Specifications
Attribute
Attribute Value
Manufacturer
Micron Technology Inc.
Product Category
Memory ICs
Series
-
Packaging
Tray
Package-Case
40-TFSOP (0.724", 18.40mm Width)
Operating-Temperature
0°C ~ 70°C (TA)
Interface
Parallel
Voltage-Supply
3 V ~ 3.6 V
Supplier-Device-Package
40-TSOP I
Memory Capacity
4M (512K x 8)
Memory-Type
FLASH - NOR
Speed
80ns
Format-Memory
FLASH
Descriptions
FLASH - NOR Memory IC 4Mb (512K x 8) Parallel 80ns 40-TSOP I
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Distributor/Wholesaler,Trading Company
Year Established:
2005
Total Annual:
1000000-3000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Our company, founded in 2005, has built long-term partnerships with numerous high-quality suppliers worldwide.
We specialize in providing customers with new and original products. To ensure quality, our technicians rigorously test all products before shipment, offering customers the strongest ass... Our company, founded in 2005, has built long-term partnerships with numerous high-quality suppliers worldwide.
We specialize in providing customers with new and original products. To ensure quality, our technicians rigorously test all products before shipment, offering customers the strongest ass...
