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Microchip Technology AT27C010-70JU-T
- Part No.:
- AT27C010-70JU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010-70JU-T.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,151
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Product details
Overview
AT27C010-70JU-T from Microchip Technology (formerly Atmel) is a 128K × 8-bit, one-time programmable EPROM with 45ns read access time, 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It features CMOS/TTL-compatible I/O, rapid programming (100 µs/byte), and dual-line control (CE/OE) for bus contention prevention in microprocessor firmware storage applications.
For engineers reviewing the AT27C010-70JU-T datasheet, AT27C010-70JU-T pinout, AT27C010-70JU-T application, or AT27C010-70JU-T equivalent, this page delivers verified package mapping (32-lead PLCC), JEDEC-compliant timing parameters, rapid programming voltage requirements (VPP = 12.0V), and real-world design constraints including decoupling capacitor guidance and latchup immunity (200mA).
Technical Context
The AT27C010-70JU-T implements a parallel-addressed OTP EPROM architecture with 17 address lines (A0–A16) and 8 bidirectional data outputs (O0–O7), controlled by CE and OE for three-state output management. Its rapid programming algorithm uses 100 µs PGM pulses at VPP = 12.0V ±0.5V and VCC = 6.5V during programming, followed by verify cycles per byte.
It supports product identification via A9 high-voltage strobe (11.5–12.5V) and A0 toggle to select manufacturer (0x1E) or device code (0x05) bytes. Input thresholds are VIH ≥2.0V and VIL ≤0.8V; output drive meets VOH ≥2.4V at –400µA and VOL ≤0.4V at 2.1mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128K × 8-bit (1,048,576 bits); sufficient for boot firmware or fixed lookup tables in legacy microcontroller systems |
| Read access time | 70 ns max (–70 speed grade); eliminates WAIT states on 14 MHz Z80 or 8086-class processors |
| VCC supply | 5V ±10%; compatible with standard TTL/CMOS logic rails without regulation overhead |
| Standby current | 100 µA max; enables low-power retention in battery-backed systems during idle periods |
| Active current | 25 mA max at 5 MHz; supports sustained burst reads without thermal derating |
| ESD protection | 2000 V HBM; withstands handling in non-ESD-controlled assembly environments |
| Latchup immunity | 200 mA; prevents destructive latchup during transient overvoltage events on VCC or I/O |
Pinout & Package
AT27C010-70JU-T is packaged in a 32-lead plastic J-leaded chip carrier (PLCC), JEDEC MS-016 variation AE compliant, with 12.32 mm × 14.86 mm body and 1.27 mm lead pitch. Pin 1 identifier located at top-left corner with beveled corner marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit parallel address bus; A0 = LSB, A16 = MSB; all must be stable before CE assertion |
| O0–O7 | Data outputs | 8-bit bidirectional data bus; three-stated when CE = VIH or OE = VIH |
| CE | Chip enable | Active-low global enable; controls device selection and power state transition between active/standby |
| OE | Output enable | Active-low output gate; allows shared bus operation without disabling CE or altering address |
| PGM | Program strobe | Active-low pulse input; initiates 100 µs programming cycle when VPP = 12.0V and CE = VIL |
| VPP | Programming voltage | 12.0V ±0.5V input during programming; must be applied simultaneously with or after VCC |
| VCC | Power supply | +5V ±10% main supply; powers logic and outputs; requires 0.1 µF ceramic decoupling at pin |
| GND | Ground reference | Signal and power return; must be low-inductance connection to minimize noise coupling into address/data lines |
| NC | No connect | Pin 32 (PLCC); electrically isolated; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Rapid programming algorithm | 100 µs/byte typical; reduces firmware update time by >90% vs. conventional EPROMs and enables in-system reprogramming with external HV circuitry |
| Integrated product ID code | Manufacturer ID (0x1E) and device ID (0x05) accessible via A9 = 12.0V and A0 toggle; enables automatic algorithm selection in production programmers |
| Two-line control interface | Independent CE and OE pins allow flexible bus arbitration-OE can be delayed up to tACC − tOE without affecting access time |
| Green packaging option | Pb/halide-free PLCC (JU suffix); complies with RoHS Directive 2011/65/EU without requiring process change or reliability trade-offs |
| Industrial temperature range | –40°C to +85°C case operating range; validated for use in factory automation controllers and telecom line cards |
Applications
| Legacy Microcontroller Boot ROM | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing immutable boot code for Z80, 8051, or 68000-based embedded controllers where flash memory was unavailable or unreliable. IC Role / Device Role / Timing Role: Nonvolatile instruction store accessed via parallel address/data bus; provides deterministic 70 ns read latency for instruction fetch pipelines. Use Value: Eliminates mechanical wear and write endurance limits of EEPROM; retains data >20 years without power. | Use Scenario: Holding ladder logic firmware and configuration data in programmable logic controllers deployed in manufacturing cells. IC Role / Device Role / Timing Role: Static firmware repository with CE/OE-controlled output gating to prevent bus conflicts during hot-swap I/O module insertion. Use Value: Supports zero-downtime field updates via external programmer while maintaining system-level ESD robustness (2000 V HBM). |
| Avionics Data Lookup Table | Medical Device Calibration Storage |
Use Scenario: Storing fixed sensor compensation coefficients and flight envelope lookup tables in certified avionics subsystems. IC Role / Device Role / Timing Role: Read-only memory mapped into CPU address space; accessed synchronously with no wait states due to 70 ns tACC. Use Value: Meets DO-254 hardware assurance level DAL-C via OTP immutability and latchup immunity (200 mA). | Use Scenario: Retaining factory-calibrated ADC offset/gain coefficients and safety-critical alarm thresholds in Class II medical instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with integrated ID verification to prevent unauthorized firmware substitution. Use Value: Enables traceable calibration chain through manufacturer/device ID bytes (0x1E/0x05) readable under VPP = 12.0V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-70JU | 256K × 8-bit capacity; identical speed grade, package, and programming voltage | Supports larger firmware images; requires wider address bus (A0–A17) | Select when firmware exceeds 128 KB and board layout accommodates 18-bit addressing |
| MX27C1001PC-70 | Same 128K × 8 organization and 70 ns speed; 32-pin PDIP only (no PLCC option) | Requires PCB redesign for through-hole mounting; lacks integrated product ID feature | Choose only if PLCC footprint is unavailable and legacy PDIP sockets exist in production |
Compared with AT27C010-70JU-T, AT27C020-70JU doubles storage without changing timing or voltage, while MX27C1001PC-70 sacrifices ID verification and surface-mount flexibility for PDIP compatibility-neither is pin-compatible, requiring layout revision.
Availability
AT27C010-70JU-T is available at Aetrix Electronics and suitable for legacy system repair, industrial controller refurbishment, and avionics maintenance programs requiring stable component supply across extended product lifecycles.
Supply support for AT27C010-70JU-T 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 acquired Atmel in 2016 and maintains full technical support, datasheet archives, and long-term supply commitment for legacy Atmel memory products.
The AT27C010 belongs to Atmel's OTP EPROM family designed for cost-sensitive, high-reliability firmware storage in industrial, medical, and aerospace systems where data immutability and radiation tolerance are critical.
FAQ
What is the maximum operating temperature range for the AT27C010-70JU-T?
The AT27C010-70JU-T is rated for industrial temperature operation from –40°C to +85°C case temperature. This range is validated per JEDEC JESD22-A108 and applies to both read and standby modes. Programming must occur at TA = 25°C ±5°C per datasheet Section 5.6; operation outside the –40°C to +85°C range may result in timing violations or data retention loss. The AT27C010-70JU-T does not support extended or military temperature grades.
Can the AT27C010-70JU-T be reprogrammed after initial programming?
No, the AT27C010-70JU-T is a one-time programmable (OTP) EPROM. Its floating-gate transistors undergo irreversible avalanche injection during programming, making subsequent erasure or rewriting physically impossible. Once programmed, the AT27C010-70JU-T functions exclusively as a read-only memory. Attempts to reprogram will not alter stored data and may damage the device due to excessive VPP stress.
What decoupling capacitors are required for stable operation of the AT27C010-70JU-T?
The AT27C010-70JU-T requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND, mounted as close as possible to the device pins. For systems with multiple AT27C010-70JU-T devices or high-current digital loads, a 4.7 µF bulk electrolytic capacitor must also be added near the power entry point. These values are specified in Section 3 of the datasheet to suppress switching transients that could exceed absolute maximum ratings and cause nonconformance.
Does the AT27C010-70JU-T support standard microprocessor bus protocols?
Yes, the AT27C010-70JU-T supports direct interfacing with industry-standard microprocessors including Intel 8086/8088, Motorola 68000, and Zilog Z80. Its CMOS- and TTL-compatible inputs (VIH ≥2.0V, VIL ≤0.8V) and outputs (VOH ≥2.4V, VOL ≤0.4V) meet both logic families' voltage thresholds. The dual-line control (CE/OE) enables seamless integration into multiplexed or demultiplexed bus architectures without additional glue logic.
How is the product identification code accessed on the AT27C010-70JU-T?
The AT27C010-70JU-T product identification code is accessed by setting A9 to 11.5–12.5V (VID), holding A1–A16 low, and toggling A0: low (VIL) selects the manufacturer ID byte (0x1E), high (VIH) selects the device ID byte (0x05). This mode requires VPP = 12.0V and CE = OE = VIL. The identification bytes are read on O0–O7 and are used by automated programmers to validate part authenticity and select correct programming algorithms for the AT27C010-70JU-T.
AT27C010-70JU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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-PLCC (11.43x13.97)
AT27C010-70JU-T FAQ
1.How can I place an order for AT27C010-70JU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-70JU-T 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 AT27C010-70JU-T reliable?
The price and inventory of AT27C010-70JU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-70JU-T is usually 5 days.
3.What payment methods are accepted for AT27C010-70JU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-70JU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-70JU-T?
AT27C010-70JU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-70JU-T 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 AT27C010-70JU-T?
For technical support, including AT27C010-70JU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-70JU-T requirements.
6.How does Aetrix verify that AT27C010-70JU-T is sourced from the original manufacturer or authorized distributors?
All AT27C010-70JU-T 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 AT27C010-70JU-T meets industry standards.
7.What is the process for return or replacement of AT27C010-70JU-T?
All AT27C010-70JU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-70JU-T, 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 AT27C010-70JU-T part is unused and in its original packaging.
Return procedure for AT27C010-70JU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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