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RL78/F12

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The following page content corresponds to the products marketed in Japan.
If you do not live in Japan, please

Product Overview:

RL78/F12 Group microcontrollers employ the RL78 core which realizes high processing performance while delivering the lowest power consumption in their class, and are suitable for automotive applications.
A high-precision (±2%) on-chip oscillator makes 32 MHz CPU operation possible (24 MHz for K grade products), and built-in features such as a reset circuit, a low voltage detection circuit, a watchdog timer, and data flash with background operation function help to lower the total cost of building a system and contribute to more compact size and lower power consumption.
In addition, abundant functions for supporting functional safety, such as an A/D converter testing function, are also on-chip.
With 20 to 64-pin packages and the standard in-vehicle network, LIN (Local Interconnect Network), these products are suitable for a broad range of automotive body control applications such as remote keyless entry, power windows, automatic air conditioning, and lighting modules.

Pin Count / Memory Size Lineup:

map_rl78f12

Block Diagram:

Block Diagram image

Key Features:

Pin count 20-pin 30-pin 32-pin 48-pin 64-pin
Product name R5F1096x R5F109Ax R5F109Bx R5F109Gx R5F109Lx
Code flash (Byte) 8 KB-64 KB 16 KB-64 KB
Data flash with background operation (Byte) 4 KB
RAM (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℃

Key Applications:

  • Car Body

Car Bod Window, Mirror,Door(slide, rear),、Wiper、Lighting,Remote keyless Entry,Switch, Indicator,Seat image

Product Lineup:


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