ML630Q464/466 Microcontrollers come with ARM Cortex M0+ 32bit CPU core.

Press Release Summary:

Operated in -40°C to +85°C temperature with 1.8V to 3.6V input supply, ML630Q464 and ML630Q466 Microcontrollers provide ±0.5℃ temperature measurement accuracy. Incorporating USB I/F, high-speed clock generator, LCD driver and RC oscillation type ADC, units come in TQFP100 package. Suitable in PDF file generation, data acquisition and data logging, units consume 0.8uA current and support four low power modes.

Original Press Release:

The Industry’s First MCUs with Built-In LCD Driver Optimized for Data Loggers---Enables Data-Logging, LCD Drive, and PDF Generation for up to 1 Year on a Single Coin Battery

ROHM Group company LAPIS Semiconductor has recently announced the availability of 32bit microcontrollers ideal for data loggers used in logistics for acquisition and management of environmental information during package shipment.

The ML630Q464/466 are the first ICs in the industry to integrate all major functions required for data logging (USB, high-speed clock generation, LCD driver, high-accuracy RC oscillation type AD converter), data acquisition (i.e. temperature, humidity, acceleration), data display, and PDF file generation on a single chip.

In recent years rising concerns about the safety and security of foods and medicines have expanded the use of logistics systems to maintain cold temperatures (cold chain) without interruption, from production to transportation and consumption, particularly for perishables and pharmaceuticals. Consequently, in the logistics industry it will be necessary to manage the transportation environment that affects package quality – namely temperature, humidity, and shock/vibration. This is expected to increase demand for management tools such as data loggers by more than 10% per year.

For data loggers, which are typically attached to packages and in many cases disposable, it is important to reduce both size and cost by utilizing smaller batteries along with fewer parts. In addition, operating guidelines such as FDA regulations on cold chain and GDP require reliable recording of package conditions during transport and the output of uneditable PDF files to prevent tampering of records (log data).

In response, the ML640Q464/466 provide PDF file generation and integrate key functions for USB data logging on 1 chip while leveraging LAPIS Semiconductor’s expertise in low power consumption, high noise immunity, and high performance. These new MCUs utilize an ARM Cortex M0+ 32bit CPU core to achieve high performance with low power consumption. Log data can be easily converted to PDF in about 4 seconds and operation is enabled for up to 380 days using a single coin battery. In addition, the products inherit LAPIS Semiconductor’s robust noise immunity, making it possible to achieve stable operation even under severe conditions.

LAPIS Semiconductor strongly supports IoT solution suppliers in supply chain and logistics with comprehensive reference design using LAPIS Semiconductor's advanced low power technology based high performance MCUs and wireless communication LSIs.

1. All major USB data logger functions integrated on one chip, reducing board space by 30%

These ICs incorporate all major features required for USB data loggers, including USB I/F, high-speed clock generator, LCD driver, and high-accuracy RC oscillation type AD converter (ADC).

The ADC provides a temperature measurement accuracy of ±0.5℃ using only a thermistor and resistor/capacitor, unlike typical temperature measurement circuits consisting of a temperature sensor, thermistor, and reference voltage generation circuit. This reduces board space by 30% over conventional solutions.

In addition, higher performance is achieved by utilizing an ARM Cortex M0+ CPU core and incorporating an optimizedPDF generation program within the IC that makes it possible to create a single A4 page PDF file with 2,500 measurement points in roughly 4 seconds. Also, combining the customer’s AES encryption program with the built-in AES function and random number generator allows users to generate password-protected PDF files.

USB data logger operation is roughly divided into two parts: (1) reading and recording sensor data at specific intervals and (2) generating a PDF file when USB connection is established at the end of use. However, standby current consumption will have a dominant effect on battery life, since most of the time the data logger is in a dormant state.

2. Providing high performance and low power consumption enables operation for up to 380 days with a single coin battery

These new MCUs achieve a best-in-class standby current consumption of 0.8uA by supporting 4 low power modes. As a result, operation for up to 380 days is achieved utilizing a single coin battery (CR2032) with just 1/3rd the capacity of conventional batteries required for MCUs used in typical data loggers.

3. Optional USB Data Logger Reference Kit helps customers accelerate development

A reference kit is provided that supports the development of data loggers using the ML630Q46x. In addition to hardware information such as circuit diagrams and parts lists, the reference kit includes various software code for operating the USB flash memory and generating PDF files, all necessary documentation, and usage methods for power management and the high accuracy RC type A/D converter that facilitate understanding of MCU operation and accelerate customer development.

4.Robust noise immunity (inherited from LAPIS Semiconductor’s ‘Tough’ MCU series) contributes to stable operation even under harsh environments

To protect important log data (for verifying package quality) against external noise these new MCUs inherit original low power consumption and noise immunity technologies adopted in LAPIS Semiconductor’s ‘Tough Low Power’ MCU series.

The ML630Q46x MCUs have succeeded in clearing ±30kV, far exceeding the measurement instrument limit of test voltage level 4 (±8kV indirect contact discharge) of the IEC 61000-4-2 standard established by the International Electrotechnical Commission (IEC). [Measured using the ML630Q466 reference board.] This enables stable operation even under harsh environments.

Sales Plan:

                              Part No.                                                                         ML630Q464/466

                          Mass Production                                                                        Started

Sales Plan          Production Quantity                                                              100,000pcs/month

                         Sample Price(Ref.)                                                                 $7(tax not included)

                         Applications                                                   USB data logger, sensing devices, industrial equipment


                                                           ML630Q464                                             ML630Q466

           CPU                                                                        Cortex-MO+

      Flash ROM with ISP                           64KB                                                       128KB

      Data Flash (Single Word)                                                   2KB

      RAM                                                  8KB                                                          16KB

     LCD Driver (Corn x Seg)                                                      8 x 50

     I/O Ports                                                                            38

     ADC                                                           2 x 24bit RC-ADC, 12 x 12bit SA-ADC

    Serial I/F                             USB2.0 Full speed (12Mbps), 12C (Master/Slave), SPI (Master/Slave), UART (Full Duplex Asynchronous)

    Timer                                      8bit timer or 16bit timer, 16bit timer with PWM, WDT, RTC

    Security Functions                                   AES, Random Number Generator

    External Interrupt                                                    8ch

    Voltage Level Supervisor                                     16 level

    Power ON Reset                                                     Yes

   Clock (Low Frequency)                           External Crystal (32.768kHz), Internal RC Oscillator (32.768kHz)

   Clock (High Frequency)                         Generation by PLL (24MHz), Internal RC Oscillator (16MHz)

    Operating Voltage                                                     1.8V — 3.6V

    Operating Temperature                                            -40°C — +85°C

    Power Consumption                                      Halt Mode: 0.80uA, Operating Mode: 250uA/MHz

    Package                                                               TQFP100

About ROHM Co., Ltd.

ROHM Semiconductor is a global company of 352,398 million yen (3.49 billion $) revenue with 21,171 employees in the last fiscal year ending March 2016.


Kumiko Omoto

PR Group at ROHM Co., Ltd.

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