My Inquiry
My Account
Microchip Technology AT27C010L-45JI
- Part No.:
- AT27C010L-45JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010L-45JI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,451
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT27C010L-45JI from Atmel is a 128K × 8-bit one-time programmable EPROM (OTP EPROM) with 45 ns read access time, 5V ±10% supply operation, and industrial temperature range (−40°C to +85°C). It features CMOS/TTL-compatible I/O, rapid programming at 100 µs/byte, and dual-line control (CE/OE) for bus contention management in microprocessor firmware storage applications.
For engineers reviewing the AT27C010L-45JI datasheet, AT27C010L-45JI pinout, AT27C010L-45JI application, or AT27C010L-45JI equivalent, key selection criteria include read speed grade (−45), low active current (25 mA @ 5 MHz), standby current (100 µA max), JEDEC-standard PLCC-32 package, and OTP reliability for embedded boot code storage.
Technical Context
The AT27C010L-45JI implements a parallel-addressed OTP EPROM architecture with 17 address lines (A0–A16), 8 bidirectional data outputs (O0–O7), and dedicated control pins (CE, OE, PGM) enabling precise timing-controlled read and rapid programming modes. Its internal logic supports VPP = 12.0 V ±0.5 V during programming and integrates product identification via A9/VH and A0 toggling.
It operates in five distinct modes-Read, Output Disable, Standby, Rapid Program, and PGM Verify-each defined by specific CE/OE/PGM voltage states and VPP conditions. The device uses high-reliability CMOS process with 2000V ESD protection and 200 mA latchup immunity, ensuring robustness in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8 bits (1,048,576-bit OTP EPROM) |
| Read Access Time | 45 ns - eliminates WAIT states in 5 MHz microprocessor systems |
| VCC Supply | 5 V ±10% - single-supply operation compatible with standard logic rails |
| Active Current | 25 mA max @ 5 MHz - lower than standard AT27C010 (35 mA), reducing system power load |
| Standby Current | 100 µA max - enables low-power hold mode during processor idle cycles |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control and instrumentation |
| Programming Speed | 100 µs/byte typical - accelerates firmware burn-in during manufacturing test |
Pinout & Package
AT27C010L-45JI is supplied in a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE, with lead pitch of 1.27 mm and body size 18.5 × 18.5 mm. Pin 1 is marked by index notch; package is RoHS-compliant and surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus for selecting one of 131,072 bytes |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; outputs driven only when CE=OE=low |
| CE | Chip Enable | Primary chip-select; deassertion places outputs in high-impedance state |
| OE | Output Enable | Secondary gate for output drivers; allows shared bus operation with CE active |
| PGM | Program Strobe | Active-low pulse input triggering byte programming under VPP = 12 V |
| VCC | Power Supply | +5 V supply for logic and output drivers; must be applied before/with VPP |
| VPP | Programming Voltage | +12.0 V ±0.5 V required only during programming; not used in read mode |
| GND | Ground Reference | Common return path for VCC, VPP, and signal currents |
| NC | No Connect | Internally unconnected pin; must remain floating (no external tie) |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop ensures production throughput and programming yield |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/VH and A0 toggle - enables automated programmer recognition |
| Two-Line Control Architecture | Independent CE and OE inputs allow flexible bus arbitration and eliminate contention in multi-device systems |
| High-Reliability CMOS Process | 2000 V HBM ESD rating and 200 mA latchup immunity support rugged industrial deployment |
| JEDEC-Standard Packaging | 32J PLCC footprint ensures compatibility with legacy socketing, reflow, and test fixtures |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Storing immutable boot code and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Non-volatile program memory providing deterministic 45 ns read access to initialize CPU and peripherals without delay penalties. Use Value: Industrial temperature rating (−40°C to +85°C) and 100 µA standby current ensure reliable operation across thermal cycling and power-loss recovery events. |
Use Scenario: Holding certified diagnostic firmware and safety-critical initialization routines in Class II medical instruments requiring long-term data retention. IC Role / Device Role / Timing Role: OTP EPROM serving as tamper-resistant, non-rewritable execution source for microcontroller startup sequence. Use Value: One-time programmability prevents field corruption; 2000 V ESD protection safeguards against handling-induced failures during assembly and service. |
| Avionics Subsystem Configuration | Test Equipment Calibration Memory |
Use Scenario: Storing aircraft subsystem configuration maps and sensor compensation coefficients in line-replaceable units (LRUs). IC Role / Device Role / Timing Role: Read-only memory accessed during power-on self-test (POST) to configure FPGA interfaces and analog front-ends. Use Value: 45 ns access time meets tight timing budgets in real-time avionics buses; PLCC-32 package supports conformal coating and vibration resistance. |
Use Scenario: Retaining factory-calibrated correction factors and instrument-specific constants in automated test equipment (ATE) mainframes. IC Role / Device Role / Timing Role: Static configuration store referenced during measurement initialization and self-calibration sequences. Use Value: Rapid programming (100 µs/byte) reduces calibration station dwell time; OTP guarantee ensures traceability and audit compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-45JI | Higher active current (35 mA vs. 25 mA); same 45 ns speed, package, and temperature range | Suitable where margin exists in power budget but identical timing and footprint required | Select AT27C010-45JI only if legacy design validation already covers higher ICC; otherwise prefer AT27C010L-45JI for efficiency. |
| MX27C1001PC-12 | 120 ns access time, 5V-only operation, PDIP-32 package; no VPP pin or rapid programming support | Acceptable for cost-sensitive, non-speed-critical industrial controllers with existing PDIP sockets | Choose MX27C1001PC-12 only when board layout lacks VPP routing and 120 ns latency is acceptable; not drop-in compatible. |
Compared with AT27C010-45JI, AT27C010L-45JI delivers 29% lower active current without sacrificing speed or package compatibility; versus MX27C1001PC-12, it offers 2.7× faster access, integrated programming control, and PLCC flexibility-making it superior for new designs demanding performance, power efficiency, and modern packaging.
Availability
AT27C010L-45JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot ROM, and avionics subsystem configuration requiring stable component supply, long-lifecycle assurance, and JEDEC-standard PLCC compatibility.
Supply support for AT27C010L-45JI 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 semiconductor manufacturer specializing in microcontrollers, non-volatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT27C010(L) series was designed as a high-reliability, low-power OTP EPROM family targeting firmware storage in resource-constrained embedded systems where data immutability and timing predictability are critical.
FAQ
What is the maximum operating temperature range for AT27C010L-45JI?
The AT27C010L-45JI is rated for industrial temperature operation from −40°C to +85°C. This range is confirmed in the Ordering Information table on page 11 of the datasheet and applies specifically to all "I" suffix variants including AT27C010L-45JI. It exceeds commercial-grade (0°C to +70°C) specifications and supports deployment in harsh environments such as factory floors and outdoor instrumentation.
Does AT27C010L-45JI require a separate programming voltage (VPP) during normal read operation?
No, AT27C010L-45JI does not require VPP during read operation. VPP = 12.0 V ±0.5 V is needed only during programming mode; in read mode, the device operates from a single 5 V ±10% supply (VCC). The datasheet explicitly states that VPP may be tied to VCC except during programming, and read-mode absolute maximum ratings exclude VPP-related limits.
Is AT27C010L-45JI pin-compatible with AT27C010-45JI?
Yes, AT27C010L-45JI is pin-compatible with AT27C010-45JI. Both share identical PLCC-32 (32J) packaging, pinout, and signal definitions-including A0–A16, O0–O7, CE, OE, PGM, VCC, VPP, GND, and NC. The only functional difference is reduced active current (25 mA vs. 35 mA), making AT27C010L-45JI a direct power-optimized replacement.
What is the purpose of the PGM pin on AT27C010L-45JI?
The PGM pin on AT27C010L-45JI is an active-low programming strobe that initiates byte-level programming when asserted under VPP = 12.0 V. It works in conjunction with CE and OE to enter Rapid Program mode, and its 100 µs pulse width (±5%) is tightly specified in the AC Programming Characteristics table. PGM has no function during read or standby modes.
How is the Integrated Product Identification Code accessed on AT27C010L-45JI?
The Integrated Product Identification Code on AT27C010L-45JI is accessed by setting A9 = 12.0 V (VH) while holding A1–A16 = VIL and toggling A0 between VIL (to read Manufacturer ID 0x1E) and VIH (to read Device Code 0x05). This mode is enabled with CE = OE = VIL and requires no VPP; outputs O0–O7 reflect the selected 8-bit code.
AT27C010L-45JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- 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:
- 45 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 (13.97x11.43)
AT27C010L-45JI FAQ
1.How can I place an order for AT27C010L-45JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010L-45JI 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 AT27C010L-45JI reliable?
The price and inventory of AT27C010L-45JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010L-45JI is usually 5 days.
3.What payment methods are accepted for AT27C010L-45JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010L-45JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010L-45JI?
AT27C010L-45JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010L-45JI 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 AT27C010L-45JI?
For technical support, including AT27C010L-45JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010L-45JI requirements.
6.How does Aetrix verify that AT27C010L-45JI is sourced from the original manufacturer or authorized distributors?
All AT27C010L-45JI 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 AT27C010L-45JI meets industry standards.
7.What is the process for return or replacement of AT27C010L-45JI?
All AT27C010L-45JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010L-45JI, 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 AT27C010L-45JI part is unused and in its original packaging.
Return procedure for AT27C010L-45JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT27C010L-45JI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
