Renesas Electronics: R8C/LA3A microcontrollers. Product Overview

The Renesas R8C/LA3A 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.

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: 5 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. 11 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: 26 (incl. LED drive ports)
• External Interrupt Pins: 13

R8C/LA3A 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	Package
R5F2LA32ADFP	8K + 2K	2K	20MHz / 2.7V – 5.5V 8MHz / 1.8V – 5.5V	LQFP
R5F2LA32ANFP
R5F2LA34ADFP	16K + 2K
R5F2LA34ANFP
R5F2LA36ADFP	32K + 2K
R5F2LA36ANFP
R5F2LA38ADFP	64K + 2K	3.5K
R5F2LA38ANFP

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