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RL78/G12

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The following page content corresponds to the products marketed in Japan.
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Product Overview:

Compact, low power, high function general-purpose microcontrollers ideal for sub-microcontrollers

RL78/G12 microcontrollers balance the industry's lowest level of consumption current (CPU: 63 μA/MHz, standby (STOP): 230 nA) and a high performance of 30 DMIPS (24 MHz). They have an on-chip oscillator, data flash, A/D converter, and more. Built-in safety features (function that detects illegal operation of hardware) enable support for the household appliance safety standard (IEC/UL 60730). With a 20 to 30-pin compact package lineup, these microcontrollers are perfect for sub-microcontrollers of small appliances and consumer and industrial equipment.

Key Applications:

  • Consumer Electronics
  • Industrial

Pin Count / Memory Size Lineup:

map_rl78g12

Block Diagram:

Block Diagram image

Key Features:

Operating voltage: VDD = 1.8 to 5.5 V
Max. frequency: 24 MHz
ROM capacities: 2 KB to 16 KB flash memory
RAM capacities: 256 B to 2 KB
Available on-chip data flash (2 KB) products (Product name :R5F1026x, R5F1027x, R5F102Ax)
20-pin plastic SSOP package, 24-pin plastic QFN package, 30-pin plastic SSOP package
General-purpose register: 8 bits x 32 registers (8 bits x 8 registers x 4 banks)
High-speed on-chip oscillation clock

  • 24 MHz high-speed oscillation clock: 24 MHz (TYP.)

On-chip single-power-supply flash memory (with prohibition of chip erase/block erase/writing function)
Self-programming (flash shield window function)
On-chip debug function
On-chip power-on-reset (POR) circuit and voltage detector (LVD)
On-chip watchdog timer (operable with the on-chip internal low-speed oscillation clock)
On-chip multiplier/divider/multiply-accumulator

  • 16 bits x 16 bits = 32 bits(signed)
  • 16 bits x 16 bits = 32 bits(unsigned)
  • 32 bits / 32 bits = 32 bits(unsigned)
  • 16 bitsx 16 bits + 32 bits = 32 bits (signed)
  • 16 bitsx 16 bits + 32 bits = 32 bits (unsigned)

On-chip key interrupt function (R5F26x, R5F27x, R5F36x, R5F37x)
On-chip clock output/buzzer output controller
On-chip BCD adjustment
I/O ports: 16 to 26 (N-ch open drain: 2)
Timer

  • 16-bit timer: 4 to 8 channels
  • Watchdog timer: 1 channel
  • Interval timer: 1 channel

Serial interface

  • CSI/UART/Simplified I2C
  • I2C

Stanby function

  • HALT
  • STOP
  • SNOOZE

10-bit resolution A/D converter(VDD = EVDD = 1.8 - 5.5 V): 8 to 11 channels
Operating ambient temperature: TA = -40 to +85°C / TA = -40 to +105°C

Product Lineup:


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