Microchip Technology AT28LV010-20TI

Overview

AT28LV010-20TI from Atmel is a 1-Mbit (128K × 8) low-voltage paged parallel EEPROM with JEDEC-standard byte-wide pinout, 200 ns read access time, and single 3.3V ± 10% supply operation. It supports automatic 1–128-byte page writes with internal latching and timer control, and delivers 15 mA active current and 20 µA CMOS standby current for embedded systems requiring nonvolatile storage with fast random access and robust data retention.

For engineers reviewing the AT28LV010-20TI datasheet, AT28LV010-20TI pinout, AT28LV010-20TI application, or AT28LV010-20TI equivalent, key selection criteria include industrial temperature range (−40°C to +85°C), hardware/software write protection, DATA polling and toggle-bit write completion detection, and compatibility with SRAM-like bus interface timing in microcontroller-based firmware update and configuration storage designs.

Technical Context

The AT28LV010-20TI implements a paged write architecture with a 128-byte internal page register that latches address and data on falling WE/CE edges, enabling concurrent bus release during internal programming. Its software data protection (SDP) requires a three-byte command sequence (0x5555/0x2AAA/0x5555) before every write, and hardware protection includes VCC power-on delay (~5 ms), noise filtering (<15 ns pulse rejection), and CE/OE/WE inhibit logic.

Write cycle termination is verified via I/O7 DATA polling (complement-to-data → true data transition) or I/O6 toggle-bit behavior, both operable at any point during the ≤10 ms internal programming period. The device uses advanced CMOS nonvolatile technology with 100,000 write cycles endurance and 10-year data retention, and supports full 131,072-word addressing via A0–A16 pins with no external high-voltage programming circuitry required.

Key Specifications

Pinout & Package

AT28LV010-20TI is available in 32-lead TSOP (32T) package per JEDEC MO-142 DD outline, with 0.5 mm lead pitch and 10.9 mm × 9.9 mm body size. Pin functions are standardized across PDIP, PLCC, and TSOP variants per JEDEC byte-wide pinout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar paged parallel EEPROM applications.

Compared with AT28C010-15PI and MN63F1002BGP, the AT28LV010-20TI uniquely combines 3.3V operation, JEDEC-compliant parallel interface, automatic page write, and dual hardware/software write protection-making it optimal for SRAM-drop-in upgrades and industrial systems demanding robust, low-power nonvolatile storage with minimal host intervention.

Availability

AT28LV010-20TI is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, and telecommunications infrastructure requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for AT28LV010-20TI 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, nonvolatile memory, and secure authentication ICs for embedded and industrial applications.

The AT28LV010 belongs to Atmel's low-voltage parallel EEPROM product line, designed specifically for 3.3V systems needing SRAM-compatible nonvolatile storage with high endurance, industrial temperature tolerance, and integrated write protection.

FAQ

What is the operating temperature range for the AT28LV010-20TI?

The AT28LV010-20TI is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the "DC and AC Operating Range" table of the official datasheet (Rev. 0395B–10/98), where the "TI" suffix explicitly denotes the industrial grade variant. The device maintains full electrical performance-including 200 ns read access and 10 ms page write-across this entire range.

Does the AT28LV010-20TI require external high-voltage programming?

No, the AT28LV010-20TI operates exclusively from a single 3.3V ± 10% supply and does not require external high-voltage programming circuitry. All write operations-including the mandatory software data protection (SDP) command sequence and internal page programming-are performed at VCC level. This eliminates the need for charge pumps or voltage boosters, simplifying board design and reducing BOM cost.

How is write completion detected on the AT28LV010-20TI?

Write completion on the AT28LV010-20TI can be detected using either DATA polling on I/O7 (where the complement of the last written byte appears until completion, then true data is returned) or the toggle-bit method on I/O6 (which toggles between 0 and 1 during programming and stabilizes upon completion). Both methods are functional at any time during the ≤10 ms internal write cycle and require no additional hardware signals.

Is the AT28LV010-20TI pin-compatible with standard 28-series EEPROMs?

Yes, the AT28LV010-20TI implements the JEDEC-approved byte-wide pinout, making it pin-compatible with industry-standard 28-series parallel EEPROMs such as the AT28C010 and 28F010. This includes identical placement of A0–A16, I/O0–I/O7, CE, OE, WE, VCC, and GND across all 32-lead packages (TSOP, PDIP, PLCC), enabling drop-in replacement in existing designs.

What is the endurance and data retention specification for the AT28LV010-20TI?

The AT28LV010-20TI guarantees 100,000 write/erase cycles and 10 years of data retention under specified operating conditions. These values are explicitly stated in the "Features" section and "Absolute Maximum Ratings" page of the datasheet (Rev. 0395B–10/98) and are validated using Atmel's advanced nonvolatile CMOS process with internal error correction for extended reliability.