Microchip Technology 11LC010T-E/MS

Overview

11LC010T-E/MS from Microchip Technology is a 1 Kbit (128 × 8) serial EEPROM with UNI/O® single-I/O bus interface, operating from 2.5V to 5.5V across -40°C to +125°C (Automotive E-temp), featuring 16-byte page write buffer, Schmitt-trigger SCIO input, and built-in write protection for automotive body control modules.

For engineers reviewing the 11LC010T-E/MS datasheet, 11LC010T-E/MS pinout, 11LC010T-E/MS application, or 11LC010T-E/MS equivalent, key selection considerations include its 3-lead MSOP package, 100 kbps Manchester-encoded bus timing, 1 µA max standby current at I-temp (derated per spec), and block write protection covering 0%, 25%, 50%, or 100% of memory array.

Technical Context

The 11LC010T-E/MS implements a Manchester-encoded, master-controlled UNI/O® bus using a single bidirectional SCIO line for clock and data recovery, eliminating separate clock lines and reducing PCB routing complexity. Its internal re-synchronization circuitry tolerates ±0.50% frequency drift per byte and ±0.06 UI edge jitter, enabling robust operation in electrically noisy automotive environments.

It integrates a status register with Write-In-Progress (WIP) and Write-Enable Latch (WEL) flags, plus nonvolatile BP0/BP1 bits for hardware-configurable block protection. The device uses on-chip high-voltage generation for EEPROM programming and includes slope-controlled output drivers to suppress ground bounce during writes.

Key Specifications

Pinout & Package

11LC010T-E/MS is housed in an 8-lead MSOP (MS) package, measuring 3.0 mm × 3.0 mm × 1.0 mm, with exposed pad for thermal enhancement and RoHS-compliant matte tin lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 11LC010T-E/MS, the 11AA010T-I/MS offers wider voltage flexibility but lacks automotive qualification, while the AT24C01D-MAHM-T provides industry-standard I²C compatibility at the cost of increased pin count and reduced noise immunity in harsh environments.

Availability

11LC010T-E/MS is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS sensor calibration requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 11LC010T-E/MS 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 Inc. is a leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.

The 11LCXXX family was designed specifically for automotive and industrial applications demanding minimal pin count, high noise immunity, and guaranteed data retention under extreme thermal and electrical stress conditions.

FAQ

What is the maximum operating frequency of the 11LC010T-E/MS UNI/O® bus?

The 11LC010T-E/MS supports a maximum serial bus frequency of 100 kHz, corresponding to a minimum bit period of 10 µs. This limit is defined by AC characteristics including input edge jitter tolerance (±0.06 UI), frequency drift (±0.50% per byte), and output edge jitter (±0.25 UI), all verified across the full -40°C to +125°C automotive temperature range.

Does the 11LC010T-E/MS require external pull-up resistors on the SCIO line?

Yes, the 11LC010T-E/MS requires an external pull-up resistor on the SCIO line, typically 4.7 kΩ to VCC, to ensure proper logic high levels during idle and standby states. The internal SCIO driver is open-drain compatible and relies on this external resistor for bus termination and signal integrity in multi-drop configurations.

How does the 11LC010T-E/MS handle power loss during a write operation?

The 11LC010T-E/MS incorporates built-in power-on/off data protection circuitry that monitors VCC and aborts write cycles if supply drops below the minimum operating voltage (2.5V). Combined with automatic erase-before-write and self-timed write cycles, this ensures no partial or corrupted data is committed to memory during brown-out conditions.

Can the 11LC010T-E/MS be used alongside other UNI/O® devices on the same bus?

Yes, the 11LC010T-E/MS supports multi-drop UNI/O® bus operation. Its fixed device address (0xA0) allows coexistence with 11LC161 (0xA1) on the same SCIO line. However, 11LC010T-E/MS cannot share the bus with 11AA-series devices sharing address 0xA0 unless hardware isolation or software arbitration is implemented.

What is the purpose of the NC pins on the 11LC010T-E/MS MSOP package?

The five NC pins (1, 2, 5, 6, 7) on the 11LC010T-E/MS MSOP package are unconnected die pads with no electrical function. They serve mechanical stabilization and thermal dissipation roles. Per Microchip's layout guidelines, these pins may be left floating or tied to ground - but must not be connected to VCC or active signals to prevent parasitic coupling or latch-up risk.