M27C256B 256千比特(32KB × 8 )紫外线可擦写可编程只读存储器和OTP存储器
The M27C256B is a 256 Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems and is organized as 32,768 by 8 bits.
The FDIP28W (window ceramic frit-seal package) has a transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure.
For applications where the content is programmed only one time and erasure is not required, the M27C256B is offered in PDIP28 and PLCC32 packages.In order to meet environmental requirements, ST offers the M27C256B in ECOPACK?packages.ECOPACK packages are Lead-free. The category of second Level Interconnect is marked
on the package and on the inner box label, in compliance with JEDEC Standard JESD97.The maximum ratings related to soldering conditions are also marked on the inner box label
M27C256B 订购型号:
| Ordering Model | Package | RoHS Compliance Grade |
Marketing Status |
Pin Count |
Storage Capacity |
Supply Voltage (Vcc) |
Supply Voltage (Vcc) |
Memory Organization |
Chip Enable To Output Delay(tCE) |
Output Enable To Output Delay(tOE) |
General Description |
Programming Voltage (Vpp) |
Programming Current (IPP) |
Operating Temperature |
Operating Temperature |
Packing Type |
| nom | spec | min | max | nom | nom | nom | nom | min | max | |||||||
| Mb | V | V | ns | ns | V | mA | °C | °C | ||||||||
| M27C256B-10C6 | PLCC 32 | Ecopack1 | Active | 32 | 0 | 4.5 | 5.25 | x8 | 100 | 50 | OTP EPROM |
12.75 | 50 | -40 | 85 | Tube |
| M27C256B-10F1 | CDIP 28 .526 F/S LENS 280 |
Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 100 | 50 | UV EPROM |
12.75 | 50 | 0 | 70 | Tube |
| M27C256B-12F1 | CDIP 28 .526 F/S LENS 280 |
Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 120 | 60 | UV EPROM |
12.75 | 50 | 0 | 70 | Tube |
| M27C256B-12F6 | CDIP 28 .526 F/S LENS 280 |
Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 120 | 60 | UV EPROM |
12.75 | 50 | -40 | 85 | Tube |
| M27C256B-45XF1 | CDIP 28 .526 F/S LENS 280 |
Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 45 | 25 | UV EPROM |
12.75 | 50 | 0 | 70 | Tube |
| M27C256B-70C6 | PLCC 32 | Ecopack1 | Active | 32 | 0 | 4.5 | 5.25 | x8 | - | - | - | - | - | - | - | Tube |
| M27C256B-70XF1 | CDIP 28 .526 F/S LENS 280 |
Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 70 | 35 | UV EPROM |
12.75 | 50 | 0 | 70 | Tube |
| M27C256B-90B6 | PDIP 28 .6 Cu .25 | Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 90 | 40 | OTP EPROM |
12.75 | 50 | -40 | 85 | Tube |
| M27C256B-90F6 | CDIP 28 .526 F/S LENS 280 |
Ecopack1 | Active | 28 | 0 | 4.5 | 5.25 | x8 | 90 | 40 | UV EPROM |
12.75 | 50 | -40 | 85 | Tube |
M27C256B 特性:
- 5V ± 10% supply voltage in Read operation
- Access time: 45ns
- Low power consumption:
– Active Current 30mA at 5MHz
– Standby Current 100μA - Programming voltage: 12.75V ± 0.25V
- Programming time: 100μs/Word
- Electronic signature
– Manufacturer Code: 20h
– Device Code: 8Dh - ECOPACK? packages available
M27C256B 技术支持与电子电路设计开发资源下载
- M27C256B 数据手册DataSeet下载.PDF
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