Silicon Laboratories C8051F9xx Low-Power Microcontrollers

Silicon Laboratories Inc. (NASDAQ: SLAB) recently announced the industry’s first microcontrollers (MCUs) capable of operating down to 0.9 V, enabling portable devices to derive power from a single-cell battery. The C8051F9xx family’s 8-bit architecture with an integrated high-efficiency dc-dc boost converter creates a true single-cell battery system solution. For products powered by user-replaceable batteries, the C8051F9xx family enables smaller form factor products, longer battery life, and lower overall system cost in both single- and dual-cell modes.

In many low-power applications, operating from 0.9 up to 3.6 V, the MCU is in sleep mode for the majority of the time, waking up periodically to capture data. The C8051F9xx delivers a typical sleep-mode current of less than 50 nA. The MCU can wake-up from its low power sleep mode with the CPU operating at 25 MIPS and ready to make an analog-to-digital converter (ADC) measurement within just two microseconds. This allows the MCU to spend a minimum amount of time performing measurements and algorithms. To save battery life in active mode, the C8051F9xx’s power-efficient architecture yields an active-mode current as low as 170 µA/MHz.

The C8051F9xx family is the first MCU to integrate 64 kB of Flash and 4 kB of RAM into a 4- x 4-mm package, providing customers with increased memory for typical applications such as data logging. The new low-voltage, low-power MCU family also integrates a 10-bit, 300-ksps analog-to-digital converter (ADC) with an internal fast wake-up voltage reference, a SmaRTClock timing module and multiple internal oscillator options to provide a true system-on-chip solution. This unprecedented integration is enabled by innovative design techniques manufactured in a standard low-power CMOS technology, resulting in fewer external components and reduced bill-of-materials cost for the customer.

The C8051F9xx family is available now in compact 24-pin, 4- x 4-mm QFN, 5- x 5-mm, 32-pin QFN and 7- x 7-mm, 32-pin LQFP packages. Pricing for the C8051F93x and C8051F92x families starts at $1.99 in quantities of 10K. Development kits are available for $99, and ToolStick daughter cards are available for $17.90.

C8051F9xx Family
Device Package Flash RAM
C8051F930-GQ 32-pin 64 kB 4 kB
C8051F930-GM 32-pin 64 kB 4 kB
C8051F931-GM 24-pin 64 kB 4 kB
C8051F920-GQ 32-pin 32 kB 4 kB
C8051F920-GM 32-pin 32 kB 4 kB
C8051F921-GM 24-pin 32 kB 4 kB

More info: Silicon Laboratories Low-Voltage, Low-Power MCUs