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Microchip Technology AT27C010-70TI
- Part No.:
- AT27C010-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27C010-70TI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,551
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Product details
Overview
AT27C010-70TI from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM designed for nonvolatile firmware storage in microprocessor systems. It delivers 45 ns read access time, operates from a single 5V ±10% supply, and supports industrial temperature range (–40°C to +85°C) in a 32-lead PLCC package. Used for boot code and configuration data in embedded controllers and instrumentation.
For engineers reviewing the AT27C010-70TI datasheet, AT27C010-70TI pinout, AT27C010-70TI application, or AT27C010-70TI equivalent, key selection factors include verified 45 ns tACC timing, 35 mA active current at 5 MHz, VPP = 12.0 V programming voltage, JEDEC-standard PLCC-32 packaging, and Rapid™ 100 µs/byte programming algorithm compatibility.
Technical Context
The AT27C010-70TI implements a CMOS OTP EPROM architecture with dual-line control (CE and OE) enabling bus contention avoidance in shared-memory systems. Its address space spans A0–A16 (17-bit), supporting full 128K-byte random access without wait states.
It uses a dedicated PGM strobe and VPP pin (12.0 V ±0.5 V) for programming, with integrated product identification code accessible via A9 high-voltage mode and A0 toggle. Standby current is limited to 100 µA max under TTL CE logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (128K × 8); sufficient for full boot ROM or firmware image in 8-bit/16-bit microcontrollers. |
| Read Access Time (tACC) | 70 ns max; guarantees sub-14.3 MHz bus operation without wait-state insertion in CPU interfaces. |
| VCC Supply | 5 V ±10%; compatible with standard TTL/CMOS logic rails and eliminates need for auxiliary voltage regulators. |
| Active Current (ICC) | 35 mA max at 5 MHz; enables stable operation in power-constrained industrial control modules. |
| Standby Current (ISB) | 100 µA max (TTL CE); supports low-power sleep modes in battery-backed or energy-sensitive systems. |
| Programming Voltage (VPP) | 12.0 V ±0.5 V; requires external high-voltage source but ensures reliable oxide breakdown during OTP write. |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade deployment in PLCs, motor drives, and factory automation hardware. |
Pinout & Package
AT27C010-70TI is supplied in a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE, with 1.27 mm pitch, 18.5 mm × 18.3 mm body, and lead-to-lead dimension of 20.2 mm. Pin 1 is marked by index notch and corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus interface; fully decoded to select any of 131,072 bytes without external demultiplexing. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus outputs; CMOS/TTL-compatible drive strength supports direct connection to 8051, Z80, or 68K family buses. |
| CE | Chip Enable | Primary device select; must be low to enable memory access-used for chip-level decoding in multi-device memory maps. |
| OE | Output Enable | Output gate control; allows shared bus operation by disabling outputs independently of CE state. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP = 12 V and address is latched. |
| VPP | Programming Voltage | 12 V input required only during programming; isolated from VCC to prevent inadvertent write during read operations. |
| VCC | Power Supply | +5 V supply pin; must be applied before/removed after VPP to avoid latch-up per datasheet sequencing requirement. |
| GND | Ground Reference | Common return path for VCC, VPP, and I/O; decoupling capacitor (0.1 µF ceramic) required adjacent to this pin. |
| NC | No Connect | Pin 14 (PLCC top view) is internally unconnected; must remain floating-no external tie or pull-up/down. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time reduces firmware update cycles and improves production throughput. |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/VH and A0 toggle-enables auto-detection in universal programmers. |
| Two-Line Control Architecture | Independent CE and OE pins allow flexible memory mapping and eliminate bus contention in multi-peripheral systems. |
| High-Reliability Process | 2000 V ESD protection and 200 mA latchup immunity ensure robustness in manufacturing handling and field environments. |
| JEDEC-Standard Packaging | 32J PLCC footprint ensures drop-in compatibility with legacy sockets and automated assembly processes across OEM lines. |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
|
Use Scenario: Storing ladder logic interpreter and I/O configuration tables in modular programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; accessed at power-on reset with deterministic 70 ns latency. Use Value: Eliminates reliance on slow serial EEPROM or external flash, enabling <100 ms cold-start initialization in DIN-rail mounted controllers. |
Use Scenario: Holding startup firmware for Z80- or 8051-based test equipment and protocol analyzers. IC Role / Device Role / Timing Role: Primary instruction ROM executing from fixed 0x0000–0x1FFFF address range; synchronized to CPU clock via CE/OE handshaking. Use Value: Guarantees zero-wait-state execution at up to 14.3 MHz bus speed, preserving real-time response in time-critical measurement subsystems. |
| Automated Test Equipment (ATE) Calibration Data | Avionics Subsystem Configuration Memory |
|
Use Scenario: Retaining sensor calibration coefficients and fixture compensation tables in benchtop ATE platforms. IC Role / Device Role / Timing Role: Read-only data store accessed during self-test sequence; powered continuously during system operation. Use Value: Provides tamper-proof, radiation-tolerant storage immune to accidental overwrite-critical for metrology-grade repeatability. |
Use Scenario: Storing flight-critical configuration parameters (e.g., sensor scaling, fail-safe thresholds) in airborne navigation units. IC Role / Device Role / Timing Role: Safety-isolated firmware partition accessed only during pre-flight initialization; no runtime writes permitted. Use Value: Meets DO-254 design assurance requirements via OTP permanence, eliminating risk of runtime corruption or unauthorized reprogramming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C010-70DC | Same 128K×8 organization and 70 ns tACC, but uses AMD's process with 15 mA lower standby current (85 µA max). | Preferred where ultra-low quiescent power is critical, e.g., battery-buffered systems with extended off-time. | Select AM27C010-70DC if board layout accommodates identical PLCC-32 footprint and VPP tolerance (12.5 V) aligns with existing programmer. |
| MX27C1001-70PC | Pin-compatible but requires 12.5 V VPP and exhibits 75 ns tACC (min 70 ns guaranteed); higher ICC active current (40 mA). | Suitable for cost-sensitive industrial designs where 5 ns timing margin is acceptable and 12.5 V programming infrastructure exists. | Choose MX27C1001-70PC only after verifying VPP supply compliance and confirming system timing budget allows 75 ns worst-case access. |
Compared with AT27C010-70TI, AM27C010-70DC offers lower standby power but identical timing and programming voltage, while MX27C1001-70PC trades 5 ns speed margin for broader VPP tolerance and higher active current-requiring careful thermal and timing validation.
Availability
AT27C010-70TI is available at Aetrix Electronics and suitable for industrial PLCs, legacy microcontroller boot systems, automated test equipment, and avionics subsystems requiring stable component supply over extended production lifecycles.
Supply support for AT27C010-70TI 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 (now part of Microchip Technology) is a fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT27C010(L) series was engineered for high-reliability, low-power OTP firmware storage in industrial and automotive control systems-prioritizing timing predictability, programming efficiency, and long-term data retention.
FAQ
What is the maximum operating frequency supported by the AT27C010-70TI?
The AT27C010-70TI does not operate at a clock frequency itself but supports bus interfaces up to approximately 14.3 MHz, derived from its 70 ns maximum address-to-output delay (tACC). This allows direct connection to microprocessors like the 80C51 or Z80 running at their maximum rated speeds without wait-state insertion. The AT27C010-70TI remains stable across its full industrial temperature range (–40°C to +85°C) under these conditions.
Can the AT27C010-70TI be reprogrammed after initial programming?
No, the AT27C010-70TI is a one-time programmable (OTP) EPROM. Once programmed, its memory cells undergo irreversible oxide breakdown, making further writes impossible. This ensures firmware integrity and prevents accidental or malicious modification in deployed systems. The AT27C010-70TI is intended for final-stage firmware loading in production, not iterative development.
What is the purpose of the VPP pin on the AT27C010-70TI?
The VPP pin on the AT27C010-70TI supplies +12.0 V ±0.5 V exclusively during programming operations to enable Fowler-Nordheim tunneling into the floating gate. It must be applied after VCC and removed before VCC to prevent latch-up. During normal read mode, VPP is tied to VCC or left floating per application circuit guidelines-never driven to 12 V in read mode. The AT27C010-70TI relies on this dedicated high-voltage rail for reliable OTP programming.
Is the AT27C010-70TI pin-compatible with other 32-lead PLCC EPROMs?
The AT27C010-70TI follows JEDEC MS-016 AE for 32J PLCC and shares identical pin count, pitch, and mechanical dimensions with industry-standard 1-Mbit EPROMs such as the AM27C010 and MX27C1001. However, functional pin equivalence requires verification of signal mapping-specifically PGM, VPP, and NC assignments-as some variants assign different functions to Pin 14 or Pin 27. Always cross-check the AT27C010-70TI pinout against target replacement part datasheets.
Does the AT27C010-70TI require external decoupling capacitors?
Yes, the AT27C010-70TI requires a 0.1 µF ceramic capacitor placed between VCC and GND, located as close as possible to the device pins to suppress high-frequency transients during CE transitions. For systems with multiple AT27C010-70TI devices or large EPROM arrays, an additional 4.7 µF bulk electrolytic capacitor is recommended near the power entry point. These capacitors are mandatory per Atmel's system considerations to maintain voltage stability and prevent non-conformance.
AT27C010-70TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT27C010-70TI FAQ
1.How can I place an order for AT27C010-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-70TI 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 AT27C010-70TI reliable?
The price and inventory of AT27C010-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-70TI is usually 5 days.
3.What payment methods are accepted for AT27C010-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-70TI?
AT27C010-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-70TI 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 AT27C010-70TI?
For technical support, including AT27C010-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-70TI requirements.
6.How does Aetrix verify that AT27C010-70TI is sourced from the original manufacturer or authorized distributors?
All AT27C010-70TI 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 AT27C010-70TI meets industry standards.
7.What is the process for return or replacement of AT27C010-70TI?
All AT27C010-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-70TI, 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 AT27C010-70TI part is unused and in its original packaging.
Return procedure for AT27C010-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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