The RX111 Group has a comprehensive small-capacity ROM/low pin count lineup and built-in USB 2.0


The RX111 Group has a comprehensive small-capacity ROM/low pin count lineup. With USB 2.0 for Battery Charging (BC 2.0), low consumption current, and fast wakeup from standby, these microcontrollers are suitable  for use in computer peripherals, and healthcare and wearable devices. With their three-phase motor control timers, they are also suitable for motor control applications in home appliances and industrial equipment.


Key Features:

CPU core RX CPU General registers: 32-bit x 16
Multiplier: 32-bit multiplier
Divider: Yes
Multiply-accumulator: Yes (two types: memory-to-memory operations and register-to-register operations)
Maximum operating frequency 32 MHz
Power supply voltage 1.8 to 3.6 V
Program Flash max. 512 KB
Data Flash 8 KB
SRAM max. 64 KB
On-chip peripheral functions Transfer functions Data transfer controller (DTCa)
Timers Multi-function timer pulse unit 2: 16 bits x 6 channels (MTU2a)
Port output enable 2 (POE2a)
Compare match timer (CMT): 16 bits x 2 channels x 1 unit
Realtime clock (RTCA): 48-pin and over: available; 40-pin: not available
Communication functions Serial communications interface (SCIe): Over 48-pin: 2 channels; Under 36-pin: 1 channel
Serial communications interface (SCIf): 1 channel
I 2C bus interface (RIIC): 1 channel
Serial peripheral interface (RSPI): 1channel
USB2.0 Full Speed(12Mbps)/Low Speed (1.5Mbps) :  64-pin [1 channel, H/F/OTG], Under 48-pin [1channel, H/F]
Analog functions 12-bit A/D converter (S12ADb):64-pin: 14 channels; 48-pin: 10 channels; 40-pin : 8channels; 36-pin:7 channels
D/A converter (DA):64-pin:2 channels; Under 48-pin: None
Safety functions Clock Frequency Accuracy Measurement Circuit (CAC)
Data Operation Circuit (DOC)
14 bits Independent watchdog timer (IWDTa)
CRC Calculator (CRC)
Clock Generation Circuit Main clock oscillator
Sub-clock oscillator
Low-speed on-chip oscillator (LOCO)
High-speed on-chip oscillator (HOCO)
Dedicated on-chip oscillator for the IWDT
PLL frequency synthesizer
Others Event Link Controller (ELC)
Multi-function Pin Controller (MPC)
Power-on Reset Circuit (POR)

Voltage Detection Circuit (LVD)
On-chip debugging function Yes (with trace function)
Low power consumption modes 3 modes
Sleep mode
Deep Sleep mode
Software standby mode
Packages PWLG0036KA-A (36-pin WFLGA, 4 x 4 mm, 0.5 mm pitch)
PLQP0048KB-A (48-pin LFQFP, 7 x 7 mm, 0.5 mm pitch)
PLQP0064KB-A (64-pin LFQFP, 10 x 10 mm, 0.5 mm pitch)
PLQP0064GA-A (64-pin LQFP, 14 x 14 mm, 0.8 mm pitch)
PWQN0040KC-A (40-pin HWQFN , 6 x 6 mm, 0.5mm pitch)
PWQN0048KB-A (48-pin HWQFN, 7 x 7 mm, 0.5 mm pitch)
PWLG0064KA-A (64-pin WFLGA, 5 x 5 mm, 0.5 mm pitch)

Pin Count / Memory Size Lineup:

Program Flash



Block Diagram:

RX111 Block Diagram

You can find an explanation of orderable part numbers here.

Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.


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.)
Renesas Starter Kit All the development tools you need for MCU evaluation and getting started. Also recommended for training.


Hardware Design Support

Title Description
IBIS/BSDL IBIS standard simulation data is required for high-speed board design and can be used to run simulations to examine and troubleshoot issues such as waveform reflection, ringing, and so on, before producing the actual board. BSDL is a data input format supported by most IEEE 1149.1 (JTAG)-compliant tools. The automatic test pattern generation (ATPG) and automatic test equipment functions of these tools facilitate testing.
Resonator Information Please search for your resonator on its manufacturer's site linked below. If you require optimal oscillation circuit constants for your particular system, please ask the manufacturer of the oscillator.

For Main clock resonator :
KYOCERA: Click here for RX111 oscillation evaluation result.
Murata Manufacturing: For IC Manufacturer, select Renesas Electronics, and enter R5F5111 into the IC Part Number search box.

For Sub clock resonator :
KYOCERA: Click here for RX111 oscillation evaluation result.
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