Renesas Electronics: R8C/LA5A microcontrollers. Product Overview

Renesas R8C/LA5A

The Renesas R8C/LA5A microcontrollers based on the R8C CPU Core. Maximum operating frequency is 20 MHz. A Flash Memory Version is available. Internal Flash Memory is programmable on a single power source.

Renesas: R8C/LA5A microcontrollers

Key Features:

Achieves industry top-class ultralow power consumption

  • Less than half the operating power consumption and standby power consumption compared to previous Renesas products
  • Built-in functions conducive to lowering system power consumption
    • Flash memory erasing/writing/reading at 1.8 V
    • Full calendar RTC with automatic correction function
  • 8 MHz operation at 1.8 V supply voltage, and 20 MHz operation from 2.7 V available
  • 8-bit Multifunction Timer with 8-bit prescaler (Timer RB0 and RB1): 2
  • 16-bit Input Capture/Output Compare Timer (Timer RC): 1
  • 8-bit Real-Time Clock Timer with compare match function (Timer RH): 1
  • 16-bit Multifunction Timer (Timer RJ0 and RJ1): 2
  • UART/Clock Synchronous Serial Interface: 1 channel
  • I2C-bus Interface/Synchronous Serial Communication Unit: 1 channel
  • 10-bit A/D Converter: 7 channels
  • Temperature Sensor
  • Comparator: 1
  • LCD Drive Control Circuit
    • Bias: 1/2, 1/3
    • Duty: Static, 1/2, 1/3, 1/4
    • Common output: Max. 4 pins
    • Segment output: Max. 27 pins
  • Watchdog Timer
  • Clock Generating Circuits: XIN Clock Oscillation Circuit, On-chip Oscillator (High/Low Speed), XCIN Clock Oscillation Circuit
  • Low Power Consumption Modes
    • Standard Operating Mode (Clock (High/Low speed), On-chip Oscillator (High/Low speed))
    • Wait Mode, Stop mode, Power-off Mode
  • Oscillation Stop Detection
  • Voltage Detection Circuit
  • Power-On Reset Circuit
  • I/O Ports: 44 (incl. LED drive ports)
  • External Interrupt Pins: 14

R8C/LA5A Block Diagram

Renesas: R8C/LA5A Block Diagram
Click to enlarge

Key Applications:

Electronic Household Appliances, Office Equipment, Audio Equipment, Consumer Products

Product Lineup:
R8C/LA3A Group


Part No. Flash RAM Operating Frequency/
Supply Voltage
R5F2LA52ADFP 8K + 2K 2K 20MHz / 2.7V – 5.5V
8MHz / 1.8V – 5.5V
R5F2LA54ADFP 16K + 2K
R5F2LA56ADFP 32K + 2K
R5F2LA58ADFP 64K + 2K 3.5K

JLCPCP: 2USD 2Layer 5PCBs, 5USD 4Layer 5PCBs

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