Configurable AFE, high-precision analog RL78/I1E microcontroller


The RL78/I1E microcontroller is an intelligent, flexible analog MCU suitable for countless industrial and medical sensing applications such as flow measurement, strain gauges, pressure or temperature sensing. With enhanced analog features such as configurable OpAmps with programmable gain, supporting inverting, non-inverting topologies, or instrumentation amplifers, the RL78/I1E can be a platform for different types of sensors. The RL78/I1E features a 24-bit delta-sigma A/D, and a separate 10-bit A/D block, with a 12-bit D/A. The package line up for RL78/I1E MCU goes down to 4 mm x 4 mm or 5 mm x 5 mm reducing PCB footprint. Operating temperature up to 125C makes it an ideal solution for the harshest of environments.


Key Features:

Pin Count 32-pin 36-pin
Parts Name R5F11CBC R5F11CCC
Memory Program Flash 32 KB
Data Flash 4 KB
CPU RL78 CPU with Multiplier/Divider, MAC instruction
Clock Generator Crystal/Ceramic 1MHz to 20MHz
On-chip Oscillator High Speed 1MHz~32MHz +/-2%(-40 to 105˚C), +/-3%(-40 to 125˚C)
Low Speed 15kHz +/-15%
PLL Built-in
I/O Port Total 10 14
CMOS I/O 7 11
CMOS input 3 3
Timer 16-bit timer TAU 6 channels
Timer RJ 1 channel
Timer RG 1 channel
15-bit timer Interval timer x 1channel (Low speed On-chip-OSC / RTC clock)
Real Time Clock (RTC) 1 channel
Analog 8/10-bit A/D converter 8 channels 10 channels
24-bit Delta-Sigma A/D converter Input channel 3 channels 4 channels
Sampling rate (normal mode) 0.5 to 16ksps
Amp Gain x1 to x64
Analog Front End temperature sensor 1 channel
Configurable Amplifier 3 channels
12-bit D/A converter 1 channel
Serial Interfaces CSI 2ch/ UART/ I2C 2ch 1 unit
UART 1 channel
External Interrupt port 7 8
DTC (data transfer controller) Activation source: 23
ELC (event link controller) Event source:16, Link module:7
Other peripherals LVD, POR
Safety Function WDT, TRAP Instruction, Flash Memory CRC Calculation, RAM Parity Error Check, Illegal Memory Access Detection, Clock Stop/Frequency Detection, RAM Write Protection, SFR Write Protection, A/DC Test Function, Port read function during Output mode
On-chip Debug Function Supported
Power Supply Voltage MCU : 2.4 V to 5.5 V, Analog : 2.7 V to 5.5V
Operating ambient temperature TA = -40 to +105°C (G: Industrial applications)
TA = -40 to +125°C (M: Industrial applications)

Pin Count / Memory Size Lineup:

Program Flash



Block Diagram:

You can find an explanation of orderable part numbers here.


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e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
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E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).
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