SLAAEF9A November   2023  – May 2025 MSPM0C1104 , MSPM0G3507 , MSPM0H3216 , MSPM0L1227 , MSPM0L1227-Q1 , MSPM0L1228 , MSPM0L1228-Q1 , MSPM0L1306 , MSPM0L2227 , MSPM0L2227-Q1 , MSPM0L2228 , MSPM0L2228-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1MSPM0 Portfolio Overview
    1. 1.1 Introduction
    2. 1.2 Portfolio Comparison of Renesas RL78 MCUs to MSPM0 MCUs
  5. 2Ecosystem And Migration
    1. 2.1 Ecosystem Comparison
      1. 2.1.1 MSPM0 Software Development Kit (MSPM0 SDK)
      2. 2.1.2 The IDE Supported By MSPM0
      3. 2.1.3 SysConfig
      4. 2.1.4 Debug Tools
      5. 2.1.5 LaunchPad™
    2. 2.2 Migration Process
      1. 2.2.1 Step 1: Choose The Right MSPM0 MCU
      2. 2.2.2 Step 2. Set Up IDE And Quick Introduction of CCS
        1. 2.2.2.1 Set Up IDE
        2. 2.2.2.2 Quick Introduction of CCS
      3. 2.2.3 Step 3: Set Up MSPM0 SDK And Quick Introduction of MSPM0 SDK
        1. 2.2.3.1 Set Up MSPM0 SDK
        2. 2.2.3.2 Quick Introduction of SDK
      4. 2.2.4 Step 4: Software Evaluation
      5. 2.2.5 Step 5. PCB Board Design
      6. 2.2.6 Step 6. Mass Production
    3. 2.3 Example
  6. 3Core Architecture Comparison
    1. 3.1 CPU
    2. 3.2 Embedded Memory Comparison
      1. 3.2.1 Flash Features
      2. 3.2.2 Flash Organization
        1. 3.2.2.1 Flash Memory Regions
        2. 3.2.2.2 NONMAIN Memory of MSPM0
        3. 3.2.2.3 Flash Memory Registers of RL78
      3. 3.2.3 Embedded SRAM
    3. 3.3 Power-up and Reset Summary and Comparison
    4. 3.4 Clocks Summary and Comparison
      1. 3.4.1 Oscillators
        1. 3.4.1.1 MSPM0 Oscillators
      2. 3.4.2 Clock Signal Comparison
    5. 3.5 MSPM0 Operating Modes Summary and Comparison
      1. 3.5.1 Operating Modes Comparison
      2. 3.5.2 MSPM0 Capabilities in Lower Modes
      3. 3.5.3 Entering Lower-Power Modes
      4. 3.5.4 Low-Power Mode Code Examples
    6. 3.6 Interrupts and Events Comparison
      1. 3.6.1 Interrupts and Exceptions
        1. 3.6.1.1 Interrupt Management of RL78
        2. 3.6.1.2 Interrupt Management of MSPM0
      2. 3.6.2 Event Handler of MSPM0
      3. 3.6.3 Event Link Controller (ELC) of RL78
      4. 3.6.4 Event Management Comparison
    7. 3.7 Debug and Programming Comparison
      1. 3.7.1 Debug Comparison
      2. 3.7.2 Programming Mode Comparison
        1. 3.7.2.1 Bootstrap Loader (BSL) Programming of MSPM0
        2. 3.7.2.2 Serial Programming (Using External Device) of RL78
  7. 4Digital Peripheral Comparison
    1. 4.1 General-Purpose I/O (GPIO, IOMUX)
    2. 4.2 Universal Asynchronous Receiver-Transmitter (UART)
    3. 4.3 Serial Peripheral Interface (SPI)
    4. 4.4 Inter-Integrated Circuit (I2C)
    5. 4.5 Timers (TIMGx, TIMAx)
    6. 4.6 Windowed Watchdog Timer (WWDT)
    7. 4.7 Real-Time Clock (RTC)
  8. 5Analog Peripheral Comparison
    1. 5.1 Analog-to-Digital Converter (ADC)
    2. 5.2 Comparator (COMP)
    3. 5.3 Digital-to-Analog Converter (DAC)
    4. 5.4 Operational Amplifier (OPA)
    5. 5.5 Voltage References (VREF)
  9. 6Summary
  10. 7References
  11. 8Revision History

4.4 Inter-Integrated Circuit (I2C)

MSPM0 and RL78 both support I2C peripherals. For RL78's I2C, basic function is provided in Serial Array Unit (SAU) peripherals use as simplified I2C, the advanced function is provided in IICA peripheral. And for MSPM0, I2C both basic and advance function is provided in I2C peripheral. MSPM0 uses Controller and Target to represent the both sides of communication . Overall, MSPM0 and RL78 I2C support is comparable with notable difference outlined in Table 4-4.

Table 4-4 I2C Feature Comparison
Feature RL78 MSPM0
Controller and target modes Yes (IICA) Yes
Multi-controller capability Yes (IICA) Yes
Maximum transfer rate 1MHz Equivalent (fast-mode plus)
Addressing mode 7 bit 7 bit
Address number (Target mode) 1 address 2 addresses
Event management No Yes
Clock stretching Yes Yes
Wakeup function (low-power mode) Yes Yes
Software reset Yes Yes
FIFO/Buffer 1 byte TX: 8 byte
RX: 8 byte
DMA No Yes
Programmable analog and digital noise filters No Yes

I2C Code Examples: information about I2C code examples can be found in the MSPM0 SDK examples guide.