A94B114FDN

The A94B114 is a CMOS 8-bit microcontroller based on an 8051-compatible CM8051-S core with 8 Kbytes of on-chip Flash. It is designed for cost-effective embedded control applications—particularly small home appliances—offering a balance of processing, precise analog input, PWM-driven outputs and system-level power management.

Featuring 512 bytes of SRAM (256 bytes IRAM + 256 bytes XRAM), multiple timers, a 12-bit ADC, programmable 16-bit PWM with dead-band control, and internal oscillators, the A94B114 provides a compact, integrated platform for control and sensing tasks across a 2.0–5.5 V supply and –40 °C to +85 °C operating range.

Key Features

• Core  8-bit CM8051-S (8051 compatible) core with 1-clock-per-cycle operation and a maximum supported clock of 16 MHz for deterministic instruction timing.
• Memory  8 Kbytes on-chip Flash (in-system programming supported). Total 512 bytes of data memory implemented as 256 bytes IRAM + 256 bytes XRAM.
• Power and Voltage  Wide operating supply range from 2.0 V to 5.5 V with on-chip LDO for the ADC and integrated power-on reset (POR), low-voltage indicator (LVI) and low-voltage reset (LVR) for reliable startup and monitoring.
• Timers & PWM  Multiple timers including one 8-bit and two 16-bit timers, plus programmable pulse generation and a 16-bit PWM channel with inverters and configurable dead-band control for precise actuator drive.
• Analog  12-bit A/D converter with up to 10 input channels and a selectable internal reference comparator (internal references at 1.6 V and 2.2 V) for accurate sensor acquisition and threshold detection.
• Interfaces  Standard serial interfaces including one-channel I2C and one-channel USART for peripheral and host communication.
• System Reliability  Watchdog Timer (8-bit), POR, LVI/LVR and multiple interrupt sources provide robust fault detection and recovery options for embedded systems.
• Low-power and Clocking  Internal high-frequency oscillator (32 MHz typ) and low-frequency oscillator (256 kHz) with IDLE/STOP power-down modes and a sub-active mode using the internal ring oscillator to reduce system power consumption.
• Package & Environment  Surface-mount 20-SOP (300 mil) package and commercial operating temperature range from –40 °C to +85 °C.

Typical Applications

• Small Home Appliances  Embedded control for appliances that require integrated PWM motor control, sensor inputs and reliable power monitoring.
• Embedded Control Systems  General-purpose controllers where an 8-bit 8051-compatible CPU, on-chip Flash and multiple timers simplify firmware and hardware design.
• Sensor Acquisition and Processing  Precision analog front-end tasks using the 12-bit ADC and comparator for temperature, current or voltage sensing.
• Actuator and Motor Drive  Single-channel 16-bit PWM with dead-band and inverter support suitable for driving actuators or small motors with configurable timing control.

Unique Advantages

• Highly integrated control peripherals: Combines timers, PWM with dead-band, ADC and comparator on-chip to reduce BOM and simplify board layout.
• Flexible power management: POR, LVI, LVR, internal LDO and multiple power modes enable robust startup and runtime power control across 2.0–5.5 V systems.
• Deterministic 8051-based processing: CM8051-S core with 1-clock-per-cycle operation provides predictable instruction timing for embedded control tasks.
• Precision analog inputs: 12-bit ADC with up to 10 channels and selectable comparator references support accurate sensor measurement and threshold detection.
• Compact surface-mount footprint: 20-SOP package provides a small form factor for space-constrained designs while supporting industrial temperature operation.
• In-system programming: On-chip Flash with ISP capability allows field updates and development flexibility without external programmers.

Why Choose A94B114FDN?

The A94B114FDN is positioned as a compact, cost-effective MCU for embedded control and small home-appliance applications that need precise analog acquisition, PWM-driven outputs and reliable power supervision. Its 8051-compatible core, integrated peripherals and flexible supply range make it suitable for designs that benefit from a single-chip control solution with in-system programmability.

Designers seeking a balance of integration, deterministic processing and on-chip analog/peripheral features will find the A94B114FDN a practical choice for reducing component count, simplifying firmware integration, and accelerating time to market.

If you need pricing or availability, request a quote or submit an inquiry to receive detailed commercial information and lead-time estimates for the A94B114FDN.