Renesas's RL78/G15 8-pin package supports multiple ambient operating temperature ranges and has stand-by features to reduce power consumption

Renesas RL78/G15 RL78 MCU supports ambient operating temperature ranges from -40°C to +85°C, -40°C to +105°C, and -40°C to +125°C. A small 3 mm x 3 mm 8 pin package with a rich serial interface makes it suitable for a wide range of applications. The functionality of the RL78/G15 has been simplified, but still includes extensive serial interfaces, comparators, and other useful features. It has a standby function to reduce power consumption. You can select two low-power modes, HALT mode and STOP mode.

The HALT mode reduces the power consumption of the normal mode by 80%. The STOP mode is more efficient, reducing power consumption by 99% more than the HALT mode. Powered by an intelligent configurator, Arduino, and a rapid prototyping board, the RL78/G15 makes application design easier for engineers. It uses simple peripheral functions suitable for entering the 8-bit MCU market and reduces BOM cost by built-in high-precision HOCO, comparator and data flash memory to achieve the purpose of replacing the existing 8-bit MCU competitors.

Features

● Low-power technology
-   VDD = 2.4V to 5.5V single supply voltage
-   HALT mode
-   STOP mode

● RL78 CPU core
-   CISC architecture with 3 - level pipeline
-   Minimum instruction execution time: Can be changed from high speed (0.0625 at 16 MHz using high speed on-chip oscillator) to low speed (1.0 μs at 1 MHz)
-   Address space: 1 MB
-   General purpose registers: (8-bit register x 8) x 4 memory bodies
-   On-chip RAM: 1 kB

● Code flash memory
-   Code flash: 4 KB to 8 KB
-   Block size: 1 KB
-   Only write after erasing
-   On-chip debugging function
-   Self-programming (no boot switching function /Flash shielding window function)

● Data flash memory
-   Data flash memory: 1 KB
-   Block size: 512 B
-   Rewrite unit: 32 bits
-   Background operations (BGO) not supported (unable to execute instructions from code flash while overwriting data flash)
-   Rewrites: 1,000,000 times (typical value)
-   Rewrite voltage: VDD = 2.4V to 5.5V

● Working environment temperature:
-   TA = −40°C to +85°C (A: Consumer application)
-   TA = −40°C to +105°C (G: industrial application)
-   TA = −40°C to +125°C (M: industrial application)

● Serial interface
-   Simplified SPI (also known as CSI, see specification) : 1 to 2 channels
-   UART: indicates one channel
-   Simplified I2C: 1 to 2 channels
-   I2C: indicates one channel

● Timer
-   16 bit timer: 8 channels
-   12-bit interval timer: 1 channel
-   Watch Dog Timer: 1 channel (works with dedicated Low speed on chip oscillator)

● A/D converter
-   8/10 bit resolution A/D converter (VDD = 2.4V to 5.5V)
-   Analog input: 3 to 11 channels
-   Internal reference voltage [0.815V (typical value)]

● High speed on-chip oscillator
-   Choose from 16 MHz, 8 MHz, 4 MHz, 2 MHz, and 1 MHz
-   Frequency accuracy ±1.0% (VDD = 2.4V to 5.5V, TA = -20°C to +85°C (G: industrial applications, M: industrial applications)
-   Frequency accuracy ±1.5% (VDD = 2.4V to 5.5V, TA = -40°C to -20°C (G: industrial applications, M: industrial applications)
-   Frequency accuracy ±2.0% (VDD = 2.4V to 5.5V, TA = +85°C to +125°C) (G: industrial applications, M: industrial applications)
-   Frequency accuracy ±2.0% (VDD = 2.4V to 5.5V, TA = -40°C to +85°C (A: Consumer applications)

● Power management and reset function
-   Optional on-chip power-on Reset (SPOR) circuit (Select Reset from 3 levels, stop setting available)