OnSemi Q32M210 32-bit MCU Blood Glucose Meter Application Solution

On Semi’s Q32M210 is a precision mixed-signal 32-bit MCU that integrates two 16-bit analog-to-digital converters, a high-accuracy voltage reference, three 10-bit digital-to-analog converters and an ARM® Cortex-M3 32-bit core with a high Configurable analog front end with programmable 32-bit core and 256kB flash memory. The chip also integrates all key functions, including real-time clock, power management, 112-segment liquid crystal Display (LCD) interface, on-chip low impedance switch, uncommitted (uncommitted) Op amps, precision voltage references (

Q32M210 is a precision, mixed−signal 32−bit microcontroller. Themicrocontroller is built on the high performance ARMCortex_−M3 processor.

The microcontroller incorporates a highly configurable sensor interface designed to work directly with a wide range of sensors having multiple characteristics, including specialized electrochemical sensors. The sensor interface includes dual programmable gain amplifiers, dual 16−bit Analog−to−Digital converters, triple 10− bit Digital−to−Analog converters (for voltage waveform generation and other applications) and three uncommitted, low−noise opamps with configurable signal multiplexing. Flexible connectivity to external non−volatile memory, personal computers, wireless devices, LCD displays and a wide range of other peripherals is enabled by several digital interfaces including I2C, USB (2.0 full−speed compliant) and a high−speed SPI/SQI interface.

The microcontroller features flexible clocking options as well as intelligent failure monitoring of power and application interruptions required by high performance, portable, battery operated applications.

All necessary clocks including an internal oscillator, real−time clock and a dedicated clock for USB operation are available on−chip (external crystals required for RTC and USB). An embedded power management unit, which incorporates several low power modes, allows application developers to minimize both standby and active power under a wide range of operating conditions.

The ultra−low sleep current makes the microcontroller ideal for applications that remain inactive for long periods of time. A large on−chip non−volatile flash memory (256 kB) combined with on−chip SRAM (48 kB) supports complex applications and simplifies application development. The flash contains built-in hardware error checking and correction (ECC) for application reliability. Additionally, a configurable DMA unit which supports independent peripheral−to−memory, memory−to−memory, and memory−to− peripheral channels provides flexible, low power data transfers without processor intervention.

A suite of industry−standard development tools, hands−on training and full technical support are available to reduce design cycle time and speed time−to−market.

Q32M210 main features:

Ultra Low-Power and Smart Power Management

Less than 400 _A/MHz, up to 16 MHz clock speed

Reliable operation down to 1.8 V; 3.3 V nominal supply voltage

Ultra−low−current sleep mode with Real−time Clock active (

Low−current standby mode with register and SRAM retention (

Integrated power supplies minimize need for external components. Only a minimum of external passives is required

Efficient, Powerful and Robust Processing Architecture

32-bit ARM Cortex-M3 CPU

256 kB on−chip flash with integrated hardware ECC for program and user data storage

48 kB on-chip SRAM

Flexible DMA, 4 general-purpose timers, CRC calculator

No external voltage required for flash write operation

Low−Noise, Low−Leakage, Low−Temperature Drift, Configurable Sensor Interface

Triple ultra low−noise opamps with low−leakage inputs and configurable outputs

Dual on−chip Programmable Gain Amplifiers (PGA) and ADCs with flexible input multiplexing and wide dynamic range

Reconfigurable voltage detection unit

Optimal dynamic range scaling of sensor signals

Flexible on−chip signal routing for dynamic reconfigurability

Minimal temperature drift of gain and offset errors allows for precise calibration

Built−in Temperature Sensor

Predictable Operation

Dedicated brown−out protection circuit prevents execution of code outside of operating range

Integrated hardware-based ECC for on-chip flash maintains code and data integrity

Watchdog timer

High Precision Analog−to−Digital Conversion and Digital−to−Analog Conversion

Dual 16−bit ADCs with on−the−fly data rate configurability

Triple 10−bit DACs with configurable dynamic range

Precision Voltage Reference

On−chip, low temperature drift (

Flexible On−Chip Clocking

Processor speeds supports up to 16 MHz provided either through internal oscillator or externally supplied clock

Flexible Sensor Interconnections

Triple low Ron analog multiplexers, including an 8:1 input mux

Quad SPST and quad multi−switches for effective simultaneous connection to different sensors

USB 2.0 Full-Speed ​​Interface

Built−in transceiver for 2.0 Full−speed compatible (12 Mbps) operation with dedicated power supply

Flexible External Interfaes

Configurable Interface Wakeup pins with configurable pull−ups and pull−downs

8 Configurable GPIO interrupts

Dual UARTs, dual SPI, SQI, I2C, PCM (including I2S mode), GPIOs

LCD Interface

Up to 112 segments with integrated charge pump and backlight driver (up to 10 mA)


Available in 140−pin TLLGA

OnSemi Q32M210 32-bit MCU Blood Glucose Meter Application Solution
Figure 1. Q32M210 functional block diagram

Figure 2. Q32M210 normal working condition configuration diagram

Figure 3. Typical power configuration diagram of Q32M210

Figure 4. Power configuration diagram of Q32M210 expansion

Figure 5. Application circuit diagram of Q32M210 blood glucose meter
Glucose meter application material list:

Figure 6. Q32M210 USB application circuit diagram
USB Application Circuit Bill of Materials:

The Links:   G065VN01 V0 6MBP160RUA060-01