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Microchip Technology AT28C010-20UM/883
- Part No.:
- AT28C010-20UM/883
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 30-BCPGA
- Datasheet:
-
AT28C010-20UM/883.pdf
- Description:
- IC EEPROM 1MBIT PARALLEL 30CPGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,090
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Product details
Overview
AT28C010-20UM/883 from Microchip Technology is a military-grade 1-Mbit (131,072 × 8) paged parallel EEPROM with 200 ns read access time, single 5V ±10% supply operation, and JEDEC-approved byte-wide pinout. It supports 1–128-byte page writes in ≤10 ms, delivers 80 mA active current and 300 µA CMOS standby current, and is qualified per MIL-PRF-38535 Class V for use in avionics data logging and radiation-tolerant control systems.
For engineers reviewing the AT28C010-20UM/883 datasheet, AT28C010-20UM/883 pinout, AT28C010-20UM/883 application, or AT28C010-20UM/883 equivalent, this device serves as a drop-in replacement for legacy 27C010/27C020 EPROMs in high-reliability embedded systems requiring nonvolatile storage with hardware/software write protection, DATA polling, and toggle-bit write completion detection.
Technical Context
The AT28C010-20UM/883 implements a paged architecture with an internal 128-byte latch that accepts sequential data within 150 µs intervals, enabling efficient burst writes without bus hold. Its dual-line chip enable (CE) and output enable (OE) logic allows precise bus contention control during mixed-read/write operations in shared-memory systems.
Write cycle timing is governed by an internal control timer; no external programming voltage or pulse sequencing is required beyond standard TTL/CMOS-compatible WE/CE/OE signals. End-of-write detection is supported via I/O7 DATA polling or I/O6 toggle-bit monitoring-both functional across the full -55°C to +125°C military temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 131,072 × 8 bits (1 Mbit); enables direct byte-addressable storage for firmware boot code or configuration tables without external address multiplexing. |
| Read Access Time | 200 ns max; meets timing requirements for 5 MHz bus interfaces in MIL-STD-1553B or ARINC 429 controller subsystems. |
| Page Write Cycle | ≤10 ms; reduces system-level write latency by 99% vs. byte-by-byte programming for firmware updates or calibration data storage. |
| Supply Voltage | 5V ±10%; operates directly from standard avionics 5V power rails without regulation or level-shifting circuitry. |
| Endurance & Retention | 10,000 write cycles / 10 years data retention; validated under MIL-PRF-38535 Class V environmental stress screening. |
| Operating Temperature | -55°C to +125°C case temperature; qualified for deployment in engine-mounted controllers and space-qualified payload modules. |
| Input/Output Compatibility | CMOS and TTL compatible; interoperates with legacy 80Cxx, 8051, and Motorola 68K microcontrollers without interface buffers. |
Pinout & Package
AT28C010-20UM/883 is supplied in a 30-pin Ceramic Pin Grid Array (PGA) package per MIL-STD-1835 30U outline, with 2.54 mm pin pitch and hermetically sealed ceramic body rated for high-reliability aerospace applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-word addressing; A7–A16 define page boundaries for 128-byte page writes. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel data path; I/O7 provides DATA polling status, I/O6 provides toggle-bit write completion signal. |
| CE | Chip Enable | Active-low primary selection signal; must be held low during read/write; deasserted ≥50 ns between reads to prevent data corruption. |
| OE | Output Enable | Active-low output gate; used with CE to control bus contention; high-Z state prevents interference during memory-mapped I/O transfers. |
| WE | Write Enable | Active-low write strobe; falling edge latches address/data; initiates byte or page write when CE is low and OE is high. |
| VCC, GND | Power Supply | Single 5V ±10% supply; CMOS standby current ≤300 µA enables low-power sleep modes in battery-backed systems. |
| NC | No Connect | Pins 1 and 30 are unconnected; no routing or grounding required on PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | VCC sense (inhibits write if <3.8V), 5 ms power-on delay, and noise filtering (rejects <15 ns pulses) prevent spurious writes during brown-out or EMI events. |
| Software Data Protection (SDP) | Three-byte unlock sequence (AAh→55h→A0h) enables/disables write protection; SDP remains active through power cycles and protects against firmware bugs. |
| Page Write Architecture | Internal 128-byte latch frees address/data bus after initial byte load, allowing host CPU to perform other tasks while write completes autonomously. |
| Write Completion Detection | Dual-mode detection: I/O7 returns complemented data until write finishes (DATA polling), or I/O6 toggles at ~100 kHz until completion (toggle bit). |
| Military Qualification | Qualified per MIL-PRF-38535 Class V with full lot traceability, extended temperature screening (-55°C to +125°C), and 100% burn-in testing. |
Applications
| Avionics Flight Control | Spacecraft Onboard Telemetry |
|---|---|
|
Use Scenario: Storing real-time sensor calibration coefficients and flight control law parameters in fly-by-wire systems subject to thermal cycling and vibration. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during power-up and runtime reconfiguration; 200 ns read time ensures deterministic response in safety-critical control loops. Use Value: Eliminates need for external write-protection circuitry and supports in-field updates via page writes without disrupting system operation. |
Use Scenario: Retaining mission-critical telemetry history and fault logs in satellite attitude control units exposed to radiation and vacuum. IC Role / Device Role / Timing Role: Radiation-tolerant data logger with 10-year retention; page write capability enables burst storage of attitude quaternion snapshots during orbital maneuvers. Use Value: Hermetic PGA package and MIL-PRF-38535 qualification ensure reliability in total ionizing dose (TID) environments up to 100 krad(Si). |
| Tactical Radio Firmware Storage | Nuclear Power Plant Safety Logic |
|
Use Scenario: Holding encrypted firmware images and cryptographic keys in handheld HF/VHF radios deployed in electromagnetic warfare zones. IC Role / Device Role / Timing Role: Secure boot memory with software data protection; SDP prevents unauthorized firmware modification during field maintenance or jamming events. Use Value: Three-byte unlock sequence adds tamper resistance without requiring dedicated security co-processors or external authentication ICs. |
Use Scenario: Archiving reactor trip logs and safety interlock states in redundant digital protection systems operating in high-gamma radiation fields. IC Role / Device Role / Timing Role: Fail-safe event recorder with guaranteed write completion detection; DATA polling confirms successful storage before initiating next safety action. Use Value: Dual write-completion methods (I/O7 polling + I/O6 toggle) provide redundancy for SIL-3 certified systems where single-point failure must be avoided. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C010-20DM/883 | 32-lead CERDIP package; same electrical specs and military qualification; different mechanical form factor and thermal profile. | Suitable for through-hole board assembly and legacy socket-based designs; less suitable for high-vibration environments due to lead flexure risk. | Select when retrofitting existing CERDIP footprints or when thermal mass requirements favor ceramic DIP over PGA. |
| AT28C010-20EM/883 | 32-pad CLCC package; identical timing and endurance; superior thermal dissipation and lower inductance than PGA for high-frequency bus operation. | Preferred for surface-mount high-density layouts with strict EMI constraints; requires reflow-compatible PCB design and inspection. | Select for new designs prioritizing solder joint reliability and signal integrity on 5 MHz+ parallel buses. |
Compared with AT28C010-20UM/883, the DM/883 variant offers easier manual handling and socket compatibility but higher thermal resistance, while the EM/883 provides better high-frequency performance and smaller footprint at the cost of more demanding assembly processes.
Availability
AT28C010-20UM/883 is available at Aetrix Electronics and suitable for avionics flight control, spacecraft telemetry, tactical radio firmware storage, and nuclear plant safety logic requiring stable component supply across extended product lifecycles.
Supply support for AT28C010-20UM/883 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and aerospace markets.
The AT28C010 product line delivers radiation-hardened, temperature-qualified EEPROMs designed specifically for mission-critical systems where data integrity, long-term retention, and deterministic write behavior are mandatory.
FAQ
What is the maximum page write size supported by the AT28C010-20UM/883?
The AT28C010-20UM/883 supports page writes of 1 to 128 bytes per internal programming cycle. All bytes must reside on the same 128-byte page defined by address bits A7–A16, and successive bytes must be loaded within 150 µs (tBLC) of each other. This capability is implemented in the AT28C010-20UM/883 using an internal 128-byte latch and autonomous timer, eliminating host CPU wait states during write execution.
Does the AT28C010-20UM/883 require an external programming voltage for write operations?
No, the AT28C010-20UM/883 performs all write operations using only the standard 5V ±10% VCC supply-no external VPP or high-voltage programming signal is needed. Internal charge pumps generate required voltages for Fowler-Nordheim tunneling, and the AT28C010-20UM/883 includes VCC sense circuitry that inhibits writes if supply drops below 3.8V, ensuring data integrity during power transitions.
How is write completion detected on the AT28C010-20UM/883?
The AT28C010-20UM/883 provides two independent hardware methods: DATA polling on I/O7 (returns complement of last written byte until write completes) and toggle-bit detection on I/O6 (toggles between 0 and 1 during write, then stabilizes). Both methods are fully functional across the -55°C to +125°C operating range and require no additional timing margins beyond standard AC read specifications.
What military standards does the AT28C010-20UM/883 comply with?
The AT28C010-20UM/883 is manufactured and tested per MIL-PRF-38535 Class V, including full lot traceability, 100% burn-in, and extended temperature screening from -55°C to +125°C. It also conforms to JEDEC-standard byte-wide pinout (MO-115 AA for Flatpack, 30U for PGA) and carries the 5962-38267 device identifier for DoD procurement compliance.
Can the AT28C010-20UM/883 be used as a direct replacement for EPROMs like the 27C010?
Yes-the AT28C010-20UM/883 uses the same JEDEC-approved byte-wide pinout and 5V-only operation as the 27C010, enabling drop-in replacement in existing sockets or PCB footprints. Unlike UV-erasable EPROMs, the AT28C010-20UM/883 supports in-system electrical erasure and programming without removing the device, and includes hardware/software write protection not present in standard EPROMs.
AT28C010-20UM/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 30-BCPGA
- Packaging:
- Box
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 200 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 30-CPGA (16.51x13.97)
AT28C010-20UM/883 FAQ
1.How can I place an order for AT28C010-20UM/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C010-20UM/883 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT28C010-20UM/883 reliable?
The price and inventory of AT28C010-20UM/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C010-20UM/883 is usually 5 days.
3.What payment methods are accepted for AT28C010-20UM/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C010-20UM/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C010-20UM/883?
AT28C010-20UM/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C010-20UM/883 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT28C010-20UM/883?
For technical support, including AT28C010-20UM/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C010-20UM/883 requirements.
6.How does Aetrix verify that AT28C010-20UM/883 is sourced from the original manufacturer or authorized distributors?
All AT28C010-20UM/883 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT28C010-20UM/883 meets industry standards.
7.What is the process for return or replacement of AT28C010-20UM/883?
All AT28C010-20UM/883 units undergo pre-shipment inspection (PSI). If there is an issue with AT28C010-20UM/883, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT28C010-20UM/883 part is unused and in its original packaging.
Return procedure for AT28C010-20UM/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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