10

True 16‑bit sigma delta ADC integration

sensor applications requiring high‑precision measurements together with more demanding signal processing.

STM32F373 PORTFOLIO

Flash memory size / RAM size (bytes)

48-pin LQFP

100-pin LQFP/BGA

64-pin LQFP

STM32F373CC

STM32F373C8

STM32F373CB

STM32F373VC

STM32F373VB

STM32F373V8

STM32F373RC

STM32F373R8

STM32F373RB

Pin count

256 K / 32 K

64 K / 16 K

128 K / 24 K

APPLICATION TARGET

•

Portable medical equipment

•

Entry‑level consumer audio

equipment

•

Sensor hub for biometric sensors

•

Portable fitness

•

Gaming

•

Metering equipment

STM32F373 BLOCK DIAGRAM

System

RTC/AWU

Power supply

1.8 V regulator

POR/PDR/PVD

Internal RC oscillators

40 kHz + 8 MHz

Clock control

PLL

2x watchdogs

(independent and

window)

Cyclic redundancy

check (CRC)

Xtal oscillators

32 kHz + 4 to 32 MHz

SysTick timer

Touch-sensing

controller 24 keys

36/52/84 I/Os

Control

2x 32-bit timers

12x 16-bit timers

72 MHz

CPU

128 bytes backup data

Up to 32-Kbyte SRAM

Up to 256-Kbyte

Flash memory

Connectivity

2x I²C

1x CAN 2.0B

1x USB 2.0 FS

3x USART

LIN, smartcard, IrDA,

modem control

3x SPI, 3x half duplex I²S

CEC

JTAG/SW debug/ETM

Nested Vector

Interrupt

Controller (NVIC)

Floating Point Unit

(FPU)

Memory Protection Unit

(MPU)

12-channel DMA

AHB bus matrix

Interconnect matrix

1x 12-bit ADC

16 channels / 1 MSPS

2x comparators

3x 16-bit ADC ∑∆

w/programmable gain

Temperature sensor

Analog

3x 12-bit DAC with

basic timers

ADVANCED PERIPHERALS

Each STM32F373 device is equipped with

three 16‑bit sigma‑delta ADCs with the

following characteristics:

•

16‑bit output signed code

•

7 gain levels: ½, 1, 2 , 4 , 8, 16, and 32

•

Differential or single‑ended mode:

•

Up to 11 differential input pairs or

21 single‑ended combinations over

three

ΣΔ ADCs

•

Free input configuration as single‑ended

or differential

•

Up to 50 KSPS in Fast mode on one

channel (per

ΣΔ ADC)

•

Independent power supply and V

REF

•

Offset error < 1 LSB after calibration

•

3 different low power modes:

•

Slow: 600 µA (max.), Standby: 200 µA,

Power‑down: 10 µA (max.)

•

5‑volt tolerant I/Os (FT, Ftf)