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STMicroelectronics · Memory ICs

M27C256B-45XF1

IC EPROM 256KBIT PARALLEL 28CDIP

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M27C256B-45XF1 component illustration
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M27C256B-45XF1 specifications

Recorded source facts. Missing values are kept explicit; verify the exact manufacturer document before design approval.

ManufacturerSTMicroelectronics
Ordering codeM27C256B-45XF1
FamilyMemory ICs
Package28-CDIP (0.600", 15.24mm) Window
Product StatusObsolete
DigiKey ProgrammableNot Verified
Memory TypeNon-Volatile
Memory FormatEPROM
TechnologyEPROM - UV
Memory Size256Kbit
Memory Organization32K x 8
Memory InterfaceParallel
Clock FrequencyNot provided in source
Write Cycle Time - Word, PageNot provided in source
Access Time45 ns
Voltage - Supply4.75V ~ 5.25V
Operating Temperature0°C ~ 70°C (TA)
Mounting TypeThrough Hole
Package / Case28-CDIP (0.600", 15.24mm) Window
Supplier Device Package28-CDIP Frit Seal with Window

Documents and evidence

M27C256B-45XF1 ↗

Catalog sources

www.ic-components.com · M27C256B-45XF1 ↗

Source directory identity match; source detail pending. Specifications remain from existing catalog.

Before sourcing M27C256B-45XF1

  1. Identify the firmware and board baseline
  2. Check flash, RAM and required peripherals
  3. Review pin assignment and supply limits
  4. Keep the full temperature and package suffix
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Questions about M27C256B-45XF1

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