M27C64A-10F1 STMicroelectronics Integrated Circuit (Dual-In-Line Packages) In Stock
The STMicroelectronics M27C64A-10F1 is a 64 Kbit (8K × 8) UV-erasable EPROM in a 28-pin DIP package with 100 ns access time and 5 V operation. Stores firmware for embedded controllers and legacy microprocessor systems. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- M27C64A-10F1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of M27C64A-10F1?
- 64 Kbit (8K × 8) UV-erasable EPROM with 100 ns access time supports fast code fetch on legacy 8-bit microprocessor bus architectures
- UV-erasable and reprogrammable design enables iterative firmware development prototyping; one-time programmable (OTP) variant supports cost-optimized production
- 28-pin ceramic DIP package (CDIP-T28) provides rugged hermetic protection for industrial, military, and long-lifecycle embedded system applications
What is M27C64A-10F1 used for?
The M27C64A-10F1 is used for firmware and look-up table storage in legacy embedded microprocessor systems, industrial controllers, and programmable test equipment requiring non-volatile 64 Kbit code storage at 100 ns access speed. Its UV-erasable design supports iterative development prototyping, while the one-time programmable (OTP) variant suits cost-optimized production. The 28-pin DIP package simplifies integration into existing through-hole PCB designs and breadboard prototypes.
What are the specifications of M27C64A-10F1?
| YTEOL | 0 |
| Access Time-Max | 100ns |
| I/O Type | COMMON |
| JESD-30 Code | R-CDIP-T28 |
| JESD-609 Code | e3 |
| Memory Density | 65536bit |
| Memory IC Type | UVPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | ASYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | 3-STATE |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Package Equivalence Code | DIP28,.6 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE, WINDOW |
| Parallel/Serial | PARALLEL |
| Programming Voltage | 12.5V |
| Qualification Status | Not Qualified |
| Standby Current-Max | 0.0001A |
| Supply Current-Max | 0.03mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | MATTE TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## M27C64A-10F1 Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.61 |
Where can I find the M27C64A-10F1 datasheet?
M27C64A-10F1 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for M27C64A-10F1?
Compatible alternatives and drop-in replacements for M27C64A-10F1:
suggested
suggested
suggested
suggested
suggested
suggested
Frequently Asked Questions
For a legacy 8-bit microcontroller ROM design, how does M27C64A-10F1's 100 ns access time align with typical bus timing requirements?
The M27C64A-10F1 provides 100 ns maximum access time from address valid to data output, compatible with 8-bit microprocessors running at 8 MHz or slower bus speeds. Its 64 Kbit (8K × 8) organization maps directly onto standard 8-bit data buses, enabling straightforward firmware storage without wait-state logic in most legacy embedded designs.
How is the M27C64A-10F1 erased and reprogrammed during iterative embedded firmware development?
The M27C64A-10F1 is erased by exposing its quartz window to UV light at approximately 253.7 nm wavelength for 15 to 20 minutes, resetting all 65536 bits to logic-1 state. A standard EPROM programmer then reprograms the 8K × 8 array at 12.5 V VPP programming voltage to load the updated firmware revision.
At what production volume does M27C64A-10F1 offer a cost advantage over mask ROM, and what role does the OTP variant play?
The M27C64A-10F1 suits low-to-mid volume production where design revisions may still occur; its 64 Kbit OTP variant avoids mask ROM's high non-recurring engineering fees while delivering 100 ns access time in the same 28-pin DIP footprint. Mask ROM typically becomes cost-effective only above 100,000 units per design.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit