ChongMing Group (HK) Int'l Co., Ltd
| Payment Terms | T/T, Western Union, Paypal |
| Supply Ability | 8300pcs |
| Delivery Time | 1 day |
| Packaging Details | Please contact me for details |
| Description | EPROM - UV Memory IC 256Kbit Parallel 120 ns 28-CDIP Frit Seal with Window |
| Ambient Operating Temperature | –40 to 125 °C |
| Temperature Under Bias | –50 to 125 °C |
| Storage Temperature | –65 to 150 °C |
| Input or Output Voltage (except A9) | -2 to 7 V |
| Supply Voltage | -2 to 7 V |
| A9 Voltage | –2 to 13.5 V |
| Brand Name | Anterwell |
| Model Number | M27C256B-12F1 |
| Certification | new & original |
| Place of Origin | original factory |
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Product Specification
| Payment Terms | T/T, Western Union, Paypal | Supply Ability | 8300pcs |
| Delivery Time | 1 day | Packaging Details | Please contact me for details |
| Description | EPROM - UV Memory IC 256Kbit Parallel 120 ns 28-CDIP Frit Seal with Window | Ambient Operating Temperature | –40 to 125 °C |
| Temperature Under Bias | –50 to 125 °C | Storage Temperature | –65 to 150 °C |
| Input or Output Voltage (except A9) | -2 to 7 V | Supply Voltage | -2 to 7 V |
| A9 Voltage | –2 to 13.5 V | Brand Name | Anterwell |
| Model Number | M27C256B-12F1 | Certification | new & original |
| Place of Origin | original factory | ||
| High Light | ic programmer circuit ，programmable audio chip | ||
M27C256B-12F1 ic chip programming 256 Kbit (32Kb à 8) UV EPROM and OTP EPROM
Feature summary
■ 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
Summary description
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.
Maximum rating
Stressing the device above the rating listed in the Absolute Maximum Ratings table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents.
Absolute maximum ratings
| Symbol | Parameter | Value | Unit |
| TA | Ambient Operating Temperature(1) | –40 to 125 | °C |
| TBIAS | Temperature Under Bias | –50 to 125 | °C |
| TSTG | Storage Temperature | –65 to 150 | °C |
| VIO(2) | Input or Output Voltage (except A9) | -2 to 7 | V |
| VCC | Supply Voltage | -2 to 7 | V |
| VA9(2) | A9 Voltage | –2 to 13.5 | V |
| VPP | Program Supply Voltage | –2 to 14 | V |
1. Depends on range.
2. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than 20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns.
Logic diagram
Company Details
Business Type:
Distributor/Wholesaler
Year Established:
2008
Total Annual:
5000000-7000000
Employee Number:
80~100
Ecer Certification：
Active Member
CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electron... CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electron...
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