STM32C031C4

Part: STM32C031G6U6 — STMicroelectronics

Type: ARM Cortex-M0+ 32-bit MCU

Description: 32-bit Arm Cortex-M0+ MCU at up to 48 MHz with 32 KB flash and 12 KB SRAM (with parity), 2.0–3.6 V supply, 2 USARTs, I2C, SPI/I2S, 12-bit ADC and 8 timers.

Operating Conditions:

• Supply voltage: 2.0–3.6 V
• Operating temperature: -40 to 85 °C (suffix 6 ambient; suffix 7 is up to 105 °C and suffix 3 up to 125 °C)
• Max APB clock frequency: 48 MHz
• Junction temperature (suffix 6): -40 to 105 °C

Absolute Maximum Ratings:

• Max supply voltage (VDD − VSS): 4.0 V
• Max current into VDD/VDDA power pin: 100 mA
• Max output current sunk/sourced by any I/O pin: 20 mA
• Max junction temperature: 130 °C
• Storage temperature: -65 to +150 °C

Key Specs:

• Core: Arm Cortex-M0+ up to 48 MHz
• Memory: 32 KB flash, 12 KB SRAM with hardware parity check
• ADC: 12-bit, 0.4 μs conversion, 0 to 3.6 V conversion range, up to 19 external channels
• I/O input voltage: -0.3 V to Min(VDD + 3.6, 5.5) V (5 V-tolerant I/Os)
• Internal oscillators: 48 MHz RC (±1 %), 32 kHz RC (±5 %)
• External oscillators: 4–48 MHz crystal, 32 kHz crystal
• Total I/O current limit: 80 mA sunk and 80 mA sourced (sum of all I/Os)
• I2C: Fast-mode Plus (1 Mbit/s); SPI up to 24 Mbit/s

Features:

• 3-channel DMA controller with flexible mapping
• Low-power modes: Sleep, Stop, Standby, Shutdown
• POR/PDR and programmable brownout reset (BOR)
• One I2C with Fast-mode Plus, SMBus/PMBus and wake-up from Stop
• Two USARTs with synchronous SPI mode; one supports ISO7816, LIN, IrDA, auto baud rate detection
• One SPI with 4- to 16-bit frame, multiplexed with I2S
• Timers: 16-bit advanced motor control, four 16-bit general-purpose, two watchdogs, SysTick
• Calendar RTC with alarm
• CRC calculation unit
• Memory protection unit (MPU)
• Serial wire debug (SWD)
• ECOPACK 2 compliant

Applications:

• Consumer, industrial and appliance domains
• Internet of Things (IoT) solutions
• Low-power applications

Package:

• UFQFPN28 (G suffix, U package code)

• Includes ST state-of-the-art patented technology
• Core: Arm ® 32-bit Cortex ® -M0+ CPU, frequency up to 48 MHz
• -40°C to 85°C/105°C/125°C operating temperature
• Memories
• -Up to 32 Kbytes of flash memory with protection
• -12 Kbytes of SRAM with hardware parity check
• CRC calculation unit
• Reset and power management
• -Voltage range: 2.0 V to 3.6 V
• -Power-on / power-down reset (POR/PDR)
• -Programmable brownout reset (BOR)
• -Low-power modes: Sleep, Stop, Standby, Shutdown
• Clock management
• -4 to 48 MHz crystal oscillator
• -32 kHz crystal oscillator with calibration
• -Internal 48 MHz RC oscillator (±1 %)
• -Internal 32 kHz RC oscillator (±5 %)
• Up to 45 fast I/Os
• -All mappable on external interrupt vectors
• -All 5 V-tolerant
• 3-channel DMA controller with flexible mapping
• 12-bit, 0.4 μs ADC (up to 19 ext. channels) -Conversion range: 0 to 3.6 V
• 8 timers: 16-bit for advanced motor control, four 16-bit general-purpose, two watchdogs, SysTick timer
• Calendar RTC with alarm

Figure 3. STM32C031FxP TSSOP20 pinout

Figure 4. STM32C031GxU UFQFPN28 pinout

Figure 5. STM32C031KxT LQFP32 pinout

Figure 6. STM32C031KxU UFQFPN32 pinout

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Figure 7. STM32C031CxT LQFP48 pinout

Figure 8. STM32C031CxU UFQFPN48 pinout

Table 11. Terms and symbols used in the pin assignment table

Table 12. Pin assignment and description

Table 12. Pin assignment and description

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Table 12. Pin assignment and description (continued)

Table 12. Pin assignment and description (continued)

The definition and values of input/output AC characteristics are given in Figure 20 and Table 52 , respectively.

Unless otherwise specified, the parameters given are derived from tests performed under the ambient temperature and supply voltage conditions summarized in Table 24: General operating conditions .

Table 52. I/O AC characteristics (1)(2)

Table 52. I/O AC characteristics (1)(2)

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Table 52. I/O AC characteristics (1)(2) (continued)

1. The fall time is defined between 70% and 30% of the output waveform, according to I 2 C specification.
2. This value represents the I/O capability but the maximum system frequency is limited to 48 MHz.

Figure 20. I/O AC characteristics definition (1)

1. Refer to Table 52: I/O AC characteristics .

Stresses above the absolute maximum ratings listed in Table 21 , Table 22 and Table 23 may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. The device mission profile (application conditions) is compliant with the JEDEC JESD47 qualification standard.

All voltages are defined with respect to V SS .

Table 21. Voltage characteristics

Table 22. Current characteristics

Table 23. Thermal characteristics

Table 23. Thermal characteristics

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The operating junction temperature T J must never exceed the maximum given in Table 24: General operating conditions .

The maximum junction temperature in °C that the device can reach if respecting the operating conditions, is:

$$T_J(max) = T_A(max) + P_D(max) \times \Theta_{JA}$$

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com . ECOPACK is an ST trademark.