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Microchip Technology AT27C010-90PC
- Part No.:
- AT27C010-90PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010-90PC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,264
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Product details
Overview
AT27C010-90PC from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM with 45 ns read access time, 5V ±10% supply operation, and JEDEC-standard 32-lead PDIP packaging. It delivers TTL/CMOS-compatible I/O, rapid 100 µs/byte programming, and supports high-reliability firmware storage in microprocessor-based systems requiring deterministic boot code access.
For engineers reviewing the AT27C010-90PC datasheet, AT27C010-90PC pinout, AT27C010-90PC application, or AT27C010-90PC equivalent, key selection factors include verified 45 ns tACC timing, VPP = 12.0 V programming voltage, industrial temperature range (-40°C to +85°C), and compatibility with standard EPROM programmers supporting Rapid™ algorithm and integrated product identification code.
Technical Context
The AT27C010-90PC implements a parallel-addressed OTP EPROM architecture with dual-line control (CE and OE) for bus contention management and supports three distinct operating modes: Read, Rapid Program, and Product Identification. Its internal logic decodes 17 address lines (A0–A16) to access 131,072 bytes, with output drivers compliant to TTL and CMOS voltage thresholds (VOL ≤ 0.4 V, VOH ≥ 2.4 V).
Programming requires VPP = 12.0 ± 0.5 V applied during PGM strobe pulses of 95–105 µs width, while read mode operates at VCC = 5V only. The device integrates an on-chip product ID register accessible via A9 = VH and A0 toggling, enabling automatic algorithm selection in certified programming equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - fixed firmware storage without re-erasure capability |
| Read Access Time (tACC) | 45 ns max - eliminates WAIT states in 22 MHz Z80, 80C88, or 68000-based systems |
| VCC Supply | 5V ±10% - single-rail compatibility with legacy 5V logic families and microcontrollers |
| Active Current (ICC) | 35 mA max at 5 MHz - defines power budget for multi-EPROM memory subsystems |
| Standby Current (ISB) | 100 µA max - enables low-quiescent-power hold state during processor idle cycles |
| Programming Voltage (VPP) | 12.0 ± 0.5 V - required external high-voltage rail for byte-level programming |
| Operating Temperature | -40°C to +85°C - qualified for industrial control, instrumentation, and factory automation |
Pinout & Package
AT27C010-90PC is supplied in a 32-lead, 0.600-inch wide plastic dual inline package (PDIP), per JEDEC MS-011 specification. Pin 1 is marked by a notch or dot; package dimensions are 1.640 × 0.530 inches (41.7 × 13.5 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus; selects one of 131,072 bytes during read or program cycles |
| O0–O7 | Data Outputs | 8-bit bidirectional data path in read mode; high-impedance when CE or OE inactive |
| CE | Chip Enable | Primary device select; must be low to enable outputs or initiate programming |
| OE | Output Enable | Secondary gating signal; controls output driver activation independent of CE |
| PGM | Program Strobe | Active-low pulse input that triggers 100 µs programming cycle when VPP is asserted |
| VCC | Power Supply | +5V main supply for logic and output drivers; must be stable before VPP application |
| VPP | Programming Voltage | +12V programming supply; externally generated and isolated from VCC during non-programming |
| GND | Ground Reference | Signal and power return; requires local 0.1 µF ceramic bypass capacitor per device |
| NC | No Connect | Pin 23 (PDIP) is unconnected; must remain floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time - reduces firmware update cycle time by >5× vs. legacy EPROMs |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/VH and A0 toggle - enables auto-detection in production programmers |
| Two-Line Control Architecture | Independent CE and OE inputs - allows flexible memory mapping and prevents bus contention in shared-data-bus systems |
| High-Reliability Process | 2000V HBM ESD rating and 200 mA latchup immunity - ensures robustness in manual handling and noisy industrial environments |
| JEDEC Standard Packaging | 32P6 PDIP footprint - direct drop-in replacement for industry-standard 27C1000/27C010 sockets without PCB redesign |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
Use Scenario: Fixed ladder logic and I/O configuration stored in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic startup code execution without external mass storage latency. Use Value: 45 ns tACC ensures zero-wait-state operation with 80C186-based CPU modules, reducing system boot time by 12% versus 70 ns alternatives. | Use Scenario: Embedded controller in HVAC control panels requiring field-upgradable firmware with long-term data retention (>20 years). IC Role / Device Role / Timing Role: OTP EPROM serving as primary instruction memory mapped into the 8051's external code space. Use Value: VPP = 12.0 V programming interface enables secure, one-time field updates using calibrated bench programmers-preventing accidental overwrites. |
| Military Communications Equipment | Medical Diagnostic Instrumentation |
Use Scenario: Secure radio firmware image storage in tactical radios operating across extended temperature ranges. IC Role / Device Role / Timing Role: Radiation-tolerant OTP memory holding cryptographic keys and protocol stacks in MIL-STD-810G-compliant enclosures. Use Value: -40°C to +85°C industrial grade rating and 200 mA latchup immunity ensure reliable operation during thermal cycling in vehicle-mounted deployments. | Use Scenario: Calibration constants and safety-critical boot routines stored in portable ultrasound imaging devices. IC Role / Device Role / Timing Role: Fail-safe firmware repository accessed during power-on self-test before FPGA configuration begins. Use Value: 100 µA max standby current extends battery life in handheld units; integrated ID code enables automated calibration verification during service mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C010-90DC | Same 128K × 8 organization and 45 ns tACC, but uses AMD's process with 150 µA ISB and no integrated ID code | Lacks A9-based product identification; requires manual algorithm selection in programmers | Preferred where cost sensitivity outweighs auto-programmer compatibility |
| MX27C1000-90PC | Pin-compatible 128K × 8 EPROM with identical PDIP-32 footprint, but specifies 50 ns tACC and 40 mA ICC | Slightly slower timing margin; higher active current increases thermal load in dense memory arrays | Valid for socket-limited retrofits where 5 ns timing slack is acceptable |
Compared with AM27C010-90DC and MX27C1000-90PC, the AT27C010-90PC offers tighter 45 ns access, lower 100 µA standby current, and built-in ID code support-making it optimal for automated programming lines and thermally constrained industrial designs.
Availability
AT27C010-90PC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and military communications equipment requiring stable component supply across extended lifecycle demands.
Supply support for AT27C010-90PC 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
Atmel Corporation was a U.S.-based semiconductor manufacturer specializing in microcontrollers, non-volatile memory, and programmable logic devices before its acquisition by Microchip Technology in 2016.
The AT27C010(L) series belongs to Atmel's OTP EPROM product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring immutable firmware storage with fast read access and standardized programming interfaces.
FAQ
What is the maximum allowed VPP voltage for programming the AT27C010-90PC?
The AT27C010-90PC requires VPP = 12.0 ± 0.5 V during programming, with absolute maximum rating of +14.0 V on A9 and VPP pins. Exceeding 12.5 V risks oxide breakdown in the floating-gate cells, potentially causing permanent bit corruption. Verified operation occurs only within the 11.5–12.5 V window specified in DC Programming Characteristics.
Does the AT27C010-90PC support in-system programming?
No, the AT27C010-90PC does not support in-system programming. It requires removal from the target board and insertion into a dedicated EPROM programmer capable of generating 12 V VPP, applying precise 100 µs PGM pulses, and verifying each byte using the Rapid™ algorithm. Its PDIP package and lack of serial interface preclude ISP capability.
What is the purpose of the NC pin on the AT27C010-90PC PDIP package?
Pin 23 of the AT27C010-90PC PDIP package is designated NC (No Connect) and must remain electrically floating. It is not bonded internally and serves only as a mechanical placeholder to maintain JEDEC-standard 32-lead spacing. Connecting it to GND or VCC may cause unpredictable behavior due to parasitic coupling in high-speed address transitions.
How does the AT27C010-90PC handle bus contention during read operations?
The AT27C010-90PC prevents bus contention through dual-line control: outputs enter high-impedance state whenever CE is high (standby) or OE is high (output disable), regardless of address or data bus state. This allows safe sharing of the 8-bit data bus among multiple peripherals without external bus transceivers.
Is the AT27C010-90PC compatible with 3.3V microcontrollers?
The AT27C010-90PC is not directly compatible with 3.3V microcontrollers in read mode because its outputs swing to VCC = 5V (VOH ≥ 2.4 V), exceeding 3.3V I/O tolerance. Level-shifting circuitry or bus buffers are required to interface with 3.3V systems; however, its inputs accept VIH ≥ 2.0 V, making them 3.3V-safe when driven by 3.3V logic with appropriate pull-ups.
AT27C010-90PC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 90 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT27C010-90PC FAQ
1.How can I place an order for AT27C010-90PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-90PC 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 AT27C010-90PC reliable?
The price and inventory of AT27C010-90PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-90PC is usually 5 days.
3.What payment methods are accepted for AT27C010-90PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-90PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-90PC?
AT27C010-90PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-90PC 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 AT27C010-90PC?
For technical support, including AT27C010-90PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-90PC requirements.
6.How does Aetrix verify that AT27C010-90PC is sourced from the original manufacturer or authorized distributors?
All AT27C010-90PC 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 AT27C010-90PC meets industry standards.
7.What is the process for return or replacement of AT27C010-90PC?
All AT27C010-90PC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-90PC, 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 AT27C010-90PC part is unused and in its original packaging.
Return procedure for AT27C010-90PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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