A96L523LRN

The A96L523LRN is an MCP device that combines a high-voltage line interface logic IC with an advanced CMOS 8-bit M8051 microcontroller core. It is optimized for low power consumption and cost-effective embedded control, with specific suitability for smoke detector applications.

Built-in high-voltage logic, an internal 3V LDO, integrated analog and digital peripherals, and a wide input voltage range make the A96L523LRN a compact systems-level solution for battery- and line-powered sensor and alarm designs.

Key Features

• Core and Performance CMOS 8-bit M8051 core (2 clocks per cycle) running at 1 MHz (1,000,000 Hz).
• Flash and Memory 4 Kbytes internal Flash with self-program/ISP and on-chip debug, 256 bytes IRAM, and 128 bytes data EEPROM.
• Power and Voltage Wide logic power supply range: 8.5 V to 42 V; internal 3V LDO with ±3% tolerance and 20 mA drive capability; internal UVLO, on-chip POR and LVR.
• Low Power Low standby consumption (max. 90 µA at 24 V, room temperature) and power-down modes including STOP and IDLE.
• Analog Subsystem 10-bit A/D converter with 9 input channels; two rail-to-rail operational amplifiers; programmable gain amplifier.
• Line Interface Integrated high-voltage line interface logic with comparator-based Rx, TR for Tx, three Rx types and five Tx modes for flexible line transceiver configurations.
• Timers and Signal Generation Multiple 16-bit timers (including multi-purpose 16-bit timer), basic interval timer, watchdog timer, pulse generation (T0/T1) and siren generation by T1.
• Current Sink and Drivers Constant sink current generator with two channels, 16-step selection and up to 274 mA maximum sink current.
• Communications USART supporting 8-bit UART x1 and 8-bit SPI x1 for serial and peripheral interfaces.
• System Reliability Flash CRC/checksum generator (16-bit) with auto and user modes, on-chip oscillator and clock circuitry, and watchdog support.
• I/O and Package 14 general-purpose I/O, surface-mount 24‑TSSOP (173 mil) package, operating temperature range −40 °C to +85 °C.

Typical Applications

• Smoke and Fire Detectors Integrated line interface, low-power operation, siren generation and ADC channels provide the functions needed for detector sensing, alarm drive and line-powered configurations.
• Alarm and Security Systems On-chip line transceiver, constant current sink channels and watchdog/timer resources support reliable alarm signaling and system supervision.
• Battery-Backed Sensor Nodes Low standby current, internal LDO and power-down modes enable energy-efficient operation in remote or battery-assisted sensor applications.

Unique Advantages

• Highly integrated line and logic functions: Combines high-voltage line interface logic with a CMOS 8-bit microcontroller to reduce external component count and simplify BOM for line-powered designs.
• Wide input voltage tolerance: Supports 8.5 V to 42 V power supply and signal inputs to 42 V, enabling direct connection to common line voltages without external translators.
• Compact memory and peripheral set: 4 KB Flash, 256 B IRAM and 128 B EEPROM with built-in CRC/checksum simplify firmware management and in-field updates via ISP.
• Robust analog and driver capabilities: 10-bit ADC, dual op-amps, programmable gain and a multi-step constant sink generator support sensor interfacing, signal conditioning and actuator drive.
• Designed for reliability: On-chip POR/LVR, internal UVLO, watchdog timer and CRC/checksum generator provide system-level safety and supervisory features.
• Surface-mount compact package: 24‑TSSOP package suits space-constrained PCBs while offering 14 GPIOs for practical system connectivity.

Why Choose A96L523LRN?

The A96L523LRN positions itself as a practical, integrated microcontroller solution for line-powered sensing and alarm products where reduced BOM, wide input voltage support and low standby current are important. Its combination of a CMOS 8051 core, onboard high-voltage line interface, analog front end and dedicated peripheral engines (timers, USART/SPI, sink current generator) makes it suitable for compact, cost-sensitive embedded designs such as smoke detectors and alarm peripherals.

Engineers and procurement teams will find the A96L523LRN useful when a single-package device must handle high-voltage signaling, sensing, local control logic and alarm drive, while offering firmware flexibility via internal Flash and ISP capability.

Request a quote or submit a sales inquiry to evaluate A96L523LRN for your next sensor or alarm design.