Datasheet
R01UH0330EJ0200 Rev.2.00      1 
Dec 13, 2013 
R01UH0330EJ0200
Rev.2.00
Dec 13, 2013
RL78/L12 
RENESAS MCU 
CHAPTER 1 OUTLINE 
1.1 Features 
Ultra-low power consumption technology 
• V
DD = single power supply voltage of 1.6 to 5.5 V which can operate a 1.8 V device at a low voltage 
• HALT mode 
• STOP mode 
• SNOOZE mode 
RL78 CPU core 
•  CISC architecture with 3-stage pipeline 
•  Minimum instruction execution time: Can be changed from high speed (0.04167 μs: @ 24 MHz operation with high-
speed on-chip oscillator) to ultra-low speed (30.5 μs: @ 32.768 kHz operation with subsystem clock) 
•  Address space: 1 MB 
•  General-purpose registers: (8-bit register × 8) × 4 banks 
•  On-chip RAM: 1 to 1.5 KB 
Code flash memory 
•  Code flash memory: 8 to 32 KB 
•  Block size: 1 KB 
•  Prohibition of block erase and rewriting (security function) 
•  On-chip debug function 
•  Self-programming (with flash shield window function) 
Data flash memory 
•  Data flash memory: 2 KB 
•  Back ground operation (BGO): Instructions can be executed from the program memory while rewriting the data flash 
memory. 
•  Number of rewrites: 1,000,000 times (TYP.) 
•  Voltage of rewrites: V
DD = 1.8 to 5.5 V 
High-speed on-chip oscillator 
•  Select from 24 MHz, 16 MHz, 12 MHz, 8 MHz, 6 MHz, 4 MHz, 3 MHz, 2 MHz, and 1 MHz 
• High accuracy: ±1.0 % (V
DD = 1.8 to 5.5 V, TA = -20 to +85°C) 
Operating ambient temperature 
• T
A = -40 to +85°C (A: Consumer applications) 
• T
A = -40 to +105°C (G: Industrial applications) 
Power management and reset function 
•  On-chip power-on-reset (POR) circuit 
•  On-chip voltage detector (LVD) (Select interrupt and reset from 14 levels) 
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