The wireless current LSI supporting Bluetooth Low Energy reduces the average current by 1/2 compared to the previous products

~ The industry's top low-power performance has been further strengthened, and the battery life in the button battery drive has doubled ~

LAPIS Semiconductor, a subsidiary of the ROHM Group, has developed a 2.4GHz wireless communication LSI "ML7105-00x" that supports Bluetooth® v4.0 Low Energy. ML7105 "has the industry's top low power consumption (9.8mA when sending, 8.9mA when receiving) performance, and the average current that has a greater impact on battery life has been reduced by about 1/2. This product was mass produced and sold in July 2013.

In addition, LAPIS Semiconductor has started to sell evaluation kits and opened a technical support website. On this website, not only can download the latest technical specifications, manuals, but also download the reference board circuit diagram and source code of the sample application.

Recently, mobile terminals such as smartphones, tablet terminals, and notebook computers not only support Bluetooth® advocated by Bluetooth® SIG Note 1, but Bluetooth® Low Energy has also become increasingly popular. The official OS of major mobile terminals have already expressed their support attitudes, and it is expected that many terminals going on the market in the future will support both Bluetooth® and Bluetooth® Low Energy.

Along with this trend, the popularity of Bluetooth® Low Energy is also accelerating in devices that improve convenience through linkages between smart watches, health equipment, fitness equipment, and smartphones and tablet terminals. In order to extend battery life, these mostly battery-driven devices have become a top priority.

The "ML7105" launched by LAPIS Semiconductor last year achieves the industry's top low power consumption (operation status when sending and receiving data packets). The new product "ML7105-00x" developed this time not only maintains the low power consumption performance in the running state, but also reduces the average current by half. The so-called average current refers to the average current value of the running state (large power consumption) and the sleep state (small power consumption) when repeatedly sending and receiving data packets at regular intervals. By drastically reducing the time required to change the state, the average current is halved, resulting in a battery life of up to 2 times. Therefore, according to the working conditions of LAPIS Semiconductor, devices that support Bluetooth® Low Energy and use a coin cell battery (CR2032) can be fully used for 2 years even under 24 hours of continuous operation.

In addition, LAPIS Semiconductor has opened a technical support site for wireless communication LSI series.

(URL: https: //MyLAPIS/regi/login.cgi)

The website can provide customers with relevant technical specifications, user manuals, design guides, evaluation kit manuals, etc., which is very helpful for customers to further improve development efficiency. In addition, for customers who have purchased the evaluation kit, the source code of the sample application is also provided.

<Features>

· Compliant with Bluetooth® SIG Core Spec v4.0 standard

· Built-in low-power RF module

· Equipped with general-purpose processor Cortex-M0

· 64K Byte ROM (CODE_ROM) for program storage

· 16K Byte RAM (DATA_RAM) for data storage

· 12K Byte for user program storage (CODE_RAM)

Equipped with a Baseband controller that complies with the Bluetooth® LE single mode standard

· Equipped with UART for Bluetooth® Host Controller Interface

· Equipped with SPI_SLAVE for Custom Host Controller Interface

· I2C (Master & Slave) for EEPROM or Custom Host Controller Interface

· Equipped with GPIO

· Low Power Clock (32.768kHz) supporting intermittent sending and receiving of information

· Built-in voltage regulator

· Power supply voltage 3.3V Typ. (1.6 ～ 3.6V)

· Power consumption 0.7uA (when sleeping)

10mA or less (when sending information)

10mA or less (when receiving information)

· Package 32pin QFN (5.0mm x 5.0mm x 0.8mm)

<Sales plan>

· Product name: ML7105-00x

· Packing form: Tape & Reel (1000)

· Sample price (reference): 500 yen (excluding tax)

· Mass production shipment time: starting in July 2013

<Application area>

· Smart watches, health equipment (heart rate monitors, thermometers, blood glucose meters, etc.), sports and fitness equipment (treadmills, etc.), remote controls, mice, smart keys

The latest model "GB-6900B / GB-X6900B" of BLUETOOTH WATCH "G-SHOCK" manufactured by Casio Computer Co., Ltd. adopts this LSI. By adopting this LSI, the mobile link function with extremely low power consumption between "G-SHOCK" and smartphones and tablet terminals is realized, which contributes to "G-SHOCK" achieving higher performance.

<Term Explanation>

· Note 1: Bluetooth® SIG

Bluetooth® Special Interest Group (SIG), Inc. is a group established in 1998 to develop the Bluetooth® standard.

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