Overview
Description
The RH850/F1KM-S2 is one group of single-chip microcontrollers in the RH850/F1x series which is designed for automotive electrical body applications.
While it achieves low power consumption, the internal flash memory is 2MB and the package covers from 100 to 176 pins. Also, a CAN FD interface has been added and the CPU operating frequency operates up to 240MHz.
Features
- 32-bit single-chip microcontroller with one G3KH CPU core
- High computational processing power
- 240MHz operating frequency
- 2MB internal flash memory
- Wide variety of internal peripheral functions
- CAN FD interface
- Low power consumption
- Low Power Sampler (LPS) polls signal inputs without CPU core interaction
- DeepSTOP mode disables power to select circuits within the chip
- Package options from 100 to 176 pins
Comparison
Applications
Design & Development
Software & Tools
Software Downloads
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| Type | Title | Date |
| Software & Tools - Other | XLSM 101 KB | |
| Software & Tools - Software | ZIP 283.84 MB | |
| Device File - Partner Tool | ZIP 11.22 MB | |
| Software & Tools - Other | ZIP 428.12 MB | |
| Software & Tools - Other | ZIP 4.24 MB 日本語 | |
| Device File - Partner Tool | ZIP 11.19 MB | |
| Library | ZIP 1.71 MB | |
| Library | ZIP 1.69 MB | |
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8 items
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Sample Code
Sample Code
Filters
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| Type | Title | Date Date |
| Sample Code | ZIP 8.87 MB | |
| Sample Code | ZIP 5.54 MB | |
| Sample Code |
ZIP
1.29 MB
Application:
Automotive, Cloud & Enterprise
Function:
Application Example
IDE:
GHS MULTI for RH850
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| Sample Code | ZIP 3.74 MB | |
| Sample Code |
ZIP
1.62 MB
Application:
Consumer Electronics, Industrial
Compiler:
GHS MULTI for V800
Function:
Application Example
IDE:
MULTI
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| Sample Code | ZIP 1.55 MB | |
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6 items
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Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Resources
Partners
Tata Elxsi Ltd.
Tata Elxsi supports Renesas customers during their development by providing MCAL service and support, including:
- Frozen Branch Service
- AUTOSAR Validation Service
- Compiler Re-validation Service
Support Communities
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CANFD Register Setting Usage — RH850/F1KM-S2
In the sample project Y-ASK-RH850F1KM-S4-V3_sample_V1011. if the register RCFDCnCFDTMSTSp for channel 3 uses p = 96, shouldn't the corresponding register for channel 4 use p = 128 instead?2. In the configuration table, the third column corresponds to the register RCFDCnCFDGAFLP0_j. According to the ...
Jul 16, 2025 -
RH850/F1KM-S2 Operating Frequency of Internal Flash
We are using RH850/F1KM-S2 but want to stay compatible with RH850/F1KM-S1. For this we want to limit the CPU clock frequency to 120 MHz. Now I found the following in the datasheet: F1KM-S2:- CPU clock frequency fCPUCLK_H : Max. 160 MHz or 240 ...
Apr 26, 2024 -
CANFD Receive Message — RH850/F1KM-S2
Hello—this function is taken from the Y-ASK-RH850F1KM-S4-V3_sample_V101 CAN-FD example. When calling it, is there a way to identify which CAN0 channel (0–7) the received data came from, and how can I retrieve the CAN ID? Also, regarding line 304: CRBRCFiBufIdx = BufIdx ...
Jul 18, 2025
FAQs
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RH850/F1KM-S2 starter kit
No, there is no a starter kit specifically for RH850/F1KM-S2. F1KM-S4 starter kit works perfectly for the RH850/F1KM-S2 as well. It serves as a simple and easy to use platform for evaluating the features and performance of both F1KM-S4 and F1KM-S2.
Jul 20, 2023 -
RH850/F1Kx: Code flash background operation (BGO)
Yes, RH850/F1KM-S2 supports code flash background operation (BGO). User can run application code in one black of 1MB code flash area and erase/program the other 1MB code flash area. Please refer to hardware user's manual for details.
Jul 20, 2023
Videos & Training
Take a glimpse of the Automotive Tech Days 2019. A great chance for customers to interact with Renesas product experts and discover available Digital and Analog solutions.
Transcript
Elmar Winter: We have done 14 TechDays for automotive customers. Eleven at our customer premises and three at our offices in Europe.
Carsten Jauch: Today, our teams have prepared lot of live demos, so I would really ask you to go in the deep, technical discussions with our experts to drive your innovation.
Elmar Winter: Renesas is in a transition from a pure semiconductor supplier to a more and more system solution provider. Today we are able to provide wide digital and analog solutions for all our customers.
For brushless DC motors, we control and drive with our MCU solutions the electronic commutation of BLDC motors.
With our inductive sensing solutions, we are able at the same time to sense precisely the position of the rotor and replace resolver solutions.
With our R-Car SoC solutions, our customers serve more and more solutions in the field of infotainment and ADAS.
In parallel, they use timing and PMIC solutions from Renesas and save development time.
A TechDay is a very efficient way to bring the right experts together. It's like a small congress at your location. If you are interested in such a TechDay in your premises, please get in touch with our sales team.