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RL78/F12

The successors to the 78K0R and R8C, with the industry's lowest level of consumption current. Automotive general-purpose low-end microcontrollers with various built-in functions necessary for automotive application communications and implementing functional safety.

 

RL78/F12 microcontrollers are available in a 20 to 64-pin, 8 to 64 KB flash memory lineup, and realize the industry's lowest level of consumption current. They have a built-in LIN module as an automotive interface. With various built-in functions for realizing functional safety including flash memory CRC calculation, illegal memory access detection, RAM guard, A/D converter testing, and SFR guard, a highly reliable system can be built, so these microcontrollers can be used for industrial applications and of course automotive applications.

 

Key Features:

ITEM RL78/F12
Pin count 20-pin 30-pin 32-pin 48-pin 64-pin
Part Name R5F1096x R5F109Ax R5F109Bx R5F109Gx R5F109Lx
Program flash (Byte) 8 KB-64 KB 16 KB-64 KB

Data flash with

background operation (Byte)

4 KB
SRAM (Byte) 0.5 KB-4 KB 1 KB-4 KB
OSC External High speed 1 MHz-20 MHz, Low speed 32.768 KHz
Internal High speed 32/24/16/12/8/4/1 MHz, Low speed 15 KHz
CPU RL78 CPU
I/O 16 26 28 44 58
Timer

16-bit: 8 ch / Interval Timer: 1 ch /

Real Time Clock: 1 ch / Wake up Timer: 1 ch /

Watch dog Timer: 1 ch

10-bit A/D 4 ch 8 ch 8 ch 10 ch 12 ch
Serial I/F 20-pin
  • CSI: 1 ch / UART: 1 ch / Simple I2C: 1 ch
  • CSI: 1 ch / UART: 1 ch
30-pin
32-pin
  • CSI: 2 ch / UART: 2 ch / Simple I2C: 2 ch
  • CSI: 1 ch / UART (support LIN-bus): 1 ch / Simple I2C: 1 ch
  • CSI (7-16 bit): 1 ch / UART (7-9, 16 bit): 1 ch
48-pin
  • CSI: 3 ch / UART: 2 ch / Simple I2C: 3 ch
  • CSI: 2 ch / UART (LIN-bus): 1 ch / Simple I2C: 2 ch
  • CSI (7-16 bit): 1 ch / UART (7-9, 16 bit): 1 ch
64-pin
  • CSI: 4 ch / UART: 2 ch / Simple I2C: 4 ch
  • CSI: 2 ch / UART (support LIN-bus): 1 ch / Simple I2C: 2 ch
  • CSI (7-16 bit): 2 ch / UART (7-9,16 bit): 1 ch
Common LIN-UART: 1 ch
External interrupt 5 ch 6 ch 10 ch 12 ch
DMA 2 ch
Other LVD, POR, key return
Voltage range 1.8 V-5.5 V
Operating temperature −40℃-85℃, −40℃-125℃

 

Pin Count / Memory Size Lineup:

RL78/F12-Pin Count/Memory Size

 

Block Diagram:

RL78/F12 Block Diagram

Below you will find information to support the development of your application.
You can find an explanation of orderable part numbers here.

 

Resources for Software and Hardware

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Software Design Support

Title Description
CS+ An integrated development environment that can be used for coding, assembling/compiling, and simulation. (Also included with Renesas Starter Kits.)
e2 studio Renesas eclipse embedded studio, known as e² studio, is a complete development and debug environment based on the popular Eclipse CDT project.
E1 A standard Renesas on-chip debugging emulator that enables users to carry out ample debugging for real development at low cost. (Also included with starter kits.)
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