This is information on a product in full production.

January 2015 DocID026351 Rev 3 1/109

STM32F328C8

ARM

Cortex

-M4 32b MCU+FPU, 64KB Flash, 16KB SRAM,

2 ADCs, 3 DAC channels, 3 COMPs, Op-Amp, 1.8 V

Datasheet − production data

Features

• Core: ARM

-32-bit Cortex

-M4 CPU with FPU

(72 MHz max), single-cycle multiplication and

HW division, and DSP instruction

• Memories

– Up to 64 KB of Flash memory

– 12 KB of SRAM with HW parity check

– Routine booster: 4 KB of SRAM on

instruction and data bus with HW parity

check (CCM)

• CRC calculation unit

• Reset and supply management

–V

: 1.8 V +/-8%

–V

DDA

: voltage range: 1.65 to 3.6 V

– Low-power modes: Sleep, Stop

–V

BAT

supply for RTC and backup registers

• Clock management

– 4 to 32 MHz crystal oscillator

– 32 kHz oscillator for RTC with calibration

– Internal 8 MHz RC (up to 64 MHz with PLL

option)

– Internal 40 kHz oscillator

• Up to 36 fast I/O ports, all mappable on

external interrupt vectors, several 5 V-tolerant

• Interconnect Matrix

• 7-channel DMA controller

• Up to two ADC 0.20 µs (up to 14 channels) with

selectable resolution of 12/10/8/6 bits, 0 to

3.6 V conversion range, single-

ended/differential mode, separate analog

supply from 1.8 to 3.6 V

• Temperature sensor

• Up to three 12-bit DAC channels with analog

supply from 2.4 V to 3.6 V

• Three ultra-fast rail-to-rail analog comparators

with analog supply from 1.8 V to 3.6 V

• One operational amplifiers that can be used in

PGA mode, all terminals accessible with

analog supply from 2.4 to 3.6 V

• Up to 17 capacitive sensing channels

supporting touchkeys, linear and rotary touch

sensors

• Up to 11 timers

– One 32-bit timer and one 16-bit timer with

up to 4 IC/OC/PWM or pulse counter and

quadrature (incremental) encoder input

– One 16-bit 6-channel advanced-control

timer, with up to 6 PWM channels,

deadtime generation and emergency stop

– One 16-bit timer with 2 IC/OCs,

1 OCN/PWM, deadtime generation,

emergency stop

– Two 16-bit timers with IC/OC/OCN/PWM,

deadtime generation and emergency stop

– Two watchdog timers (independent,

window)

– SysTick timer: 24-bit downcounter

– Up to two 16-bit basic timers to drive the

DAC

• Calendar RTC with alarm, periodic wakeup

from Stop

• Communication interfaces

– CAN interface (2.0 B Active)

–One I

C with 20 mA current sink to support

Fast mode plus, SMBus/PMBus

– Up to 3 USARTs, one with ISO/IEC 7816

interface, LIN, IrDA, modem control

–One SPI

• Debug mode: serial wire debug (SWD), JTAG

• 96-bit unique ID

• All packages ECOPACK

LQFP48 (7 × 7 mm)

www.st.com

Contents STM32F328C8

2/109 DocID026351 Rev 3

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1 ARM

Cortex

-M4 core with FPU with embedded Flash

and SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.1 Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.2 Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.3 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.3 Cyclic redundancy check calculation unit (CRC) . . . . . . . . . . . . . . . . . . . 13

3.4 Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.4.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.4.2 Power supply supervision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.4.3 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.5 Interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.6 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.7 General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.8 Direct memory access (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.9 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.9.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 17

3.9.2 Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . 17

3.10 Fast analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.10.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.10.2 Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.10.3 V

BAT

battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.10.4 OPAMP2 reference voltage (VOPAMP2) . . . . . . . . . . . . . . . . . . . . . . . . 19

3.11 Digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.12 Operational amplifier (OPAMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.13 Ultra-fast comparators (COMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.14 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.14.1 Advanced timer (TIM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21