STM32 L4 Series
STM32Lx complete offer
STM32 L0
Entry
STM32 L1
Mainstream
STM32 L4
Analog/DSP
Cortex-M0+
32 MHz
1.65 to 3.6V
8/16-bits Appli.
Cortex-M3
32 MHz
1.65 to 3.6V
Wide portfolio
Cortex-M4 w/FPU
80+ MHz
1.65 to 3.6V
Advanced Analog
High Performance
3 lines
Cost
Effectiveness
USB, LCD,
Analog
16KB – 192KB
20KB SRAM
3 lines
USB, LCD, AES,
Analog
3 lines
ADC 5 Msps,
PGA, Compar.,
DAC, Op-Amp,
USB, LCD, AES
64KB – 1MB
Cost smart
Broad Range
32KB – 512KB
80KB SRAM
Advanced &
High
Performance
2
Memory size (Bytes)
Full Ultra-low-power Family
C-M3
512K
256K
C-M0+
16K
STM8 L1
32K
8-bit
STM32 L0
128K
STM32 L1
384K
STM32 L4
C-M4
1M
64K
3
4K
4.8
(16MHz)
30
(32MHz)
33.6
(32MHz)
100
(80MHz)
Dmips
(Fmax CPU)
STM32 L4 strategy
• Maintain the leadership in ultra-low
power by providing a high-end version
(more memory, more peripherals,
innovation and horsepower)
• Convergence between High
Performance and Ultra-Low power
• Build a family (from 32kbytes up to 2
Mbytes) at a cost effective price
4
Birth of the STM32 L4
High-performance
ARM Cortex-M4
FPU
Ultra-low-power
• STM32L4 is a perfect fit in terms of ultra-low power, performances,
memory size, and peripherals at a cost effective price.
• Convergence between High performance and Ultra-low power series
5
STM32 L47 block diagram – 1 MB
6
STM32 L4 outstanding features
• Overall architecture review and improvement – new Ultra-low power platform - VBAT
domain with charging feature
• Cortex-M4F(FPU) core with MPU and DSP instruction
• More performance up to 80 MHz, ART Accelerator™ all across the voltage range
• Higher memory range (up to 1-Mbyte of Flash dual bank and 128-Kbyte of RAM).
32K RAM with HW parity check.
• 3 x ULP ADC SAR 12-bit (with 16-bit mode with HW oversampling) 5 MSPS
• USB OTG FS: no additional crystal needed if a 32,768 kHz is used
(MSI auto-calibrated with LSE, 0.25%)
• Available in STOP mode with wake up capability: I²C, LP UART, LP timer
• Touch sensing Controller
• Quad SPI, Digital Filter for ∑∆ Modulator, SWP
7
Ultra-Low-Power and Flexibility
8
FlexPowerControl
STM32L4 is based on a new platform optimized to reduce power
consumption and increase flexibility
Down to 30 nA for I/O wake-up
with additional Shutdown mode
RTC available for all power modes
(from Active down to VBAT)
External level shifter no longer needed
Separate VDD supplies (down to 1.08 V)
Down to 360 nA keeping
32 Kbytes of SRAM active
in Standby mode
4 nA VBAT mode with charging
capability
Automatic switch to maintain power
for RTC and backup registers
STM32L4
Wake up MCU with any peripheral
(Communication I/Fs, analog circuits,
timers …)
I/O level kept in low power modes
Optimization of system consumption
USB capable with 32 kHz crystal
oscillator
(Dedicated crystal oscillator is no
longer needed for USB function)
Internal oscillator from 100 kHz to 48 MHz
(+/-0.25% int. clock accuracy over
voltage/temperature with LSE)
1 leader and performance booster
1 ULP
Ultra-low-power modes
Best power consumption numbers with full flexibility
Wake-up
time
VBAT
4 nA / 300 nA*
250 µs
SHUTDOWN
14 µs
STANDBY
14 µs
STANDBY + 32 KB RAM
5 µs
STOP 2 (full retention)
4 µs
STOP 1 (full retention)
6 cycles
SLEEP
RUN at 24 MHz
RUN at 80 MHz
Tamper: 3 I/Os, RTC
Wake-up sources: reset pin, 5 I/Os
30 nA / 330 nA*
130 nA / 430 nA*
Wake-up sources: + RTC, BOR, IWDG
360 nA / 660 nA*
1.1 µA / 1.4 µA*
7.3 µA / 7.6 µA*
35 µA / MHz
Wake-up sources: + all I/Os, PVD, LCD,
COMPs, I²C, LPUART, LPTIM
Wake-up sources: + all I²C, UART
Wake-up sources: any interrupt or event
100 µA / MHz
112 µA / MHz
Note : * without RTC / with RTC
1 leader and performance booster
1 ULP
9
Efficient run and fast wake-up
10
Ready for Launch Control ? From 0 to 48 MHz in less than 5 µs
• Thanks to our internal
oscillator (MSI) used at
start-up (programmable
from 100 kHz to 48 MHz)
• PLL wake-up time
< 15 µs
(needed to reach fMAX)
< 5 µs!
Run
48 MHz
Run
80 MHz
STOP
mode
1 ULP leader and performance booster
Providing more performance
11
Do not compromise on performance with STM32L4
CoreMark score
Execution performance
from Flash
273
Linear performance
thanks to ST
ART AcceleratorTM
• Up to 80 MHz/ 100 DMIPS with
ART Accelerator™
• Up to 273 CoreMark Result
• ARM Cortex-M4 with DSP
instructions and floating-point unit
(FPU)
• Optimized DMA (14 channels)
Competitors: impact
of wait states
• SPI up to 40 Mbit/s,
USART 10 Mbit/s
CPU frequency 80 MHz
1 ULP leader and performance booster
Digital Filter for Sigma
Delta Modulators
8 x parallel inputs
with up to 24-bit data
output resolution
Smart peripherals
Δ Metering
12
LCD Display
VBAT with RTC
for battery backup
STM32L4
88×40 or 4×44
with step-up converter
240 nA in VBAT mode
for RTC and
32x 32-bit backup registers
Anti Tamper pin
3 x tamper pins
for battery domain
TNRG & AES
for Security
128-/256-bit AES
key encryption hardware
accelerator
Electricity/Gas
/Water
Smart Meter
SPI / UART/ SDIO for Wireless
3x SPIs (4x SPIs with the Quad SPI)
6x USARTs (ISO 7816, LIN, IrDA, modem)
1 x SDIO
FSMC
External memory interface
for static memories supporting SRAM,
PSRAM, NOR and NAND
I/Os Up to 114 fast I/Os for buttons & relays
2 Innovation
Digital Filter for Sigma
Delta Modulators
with PDM (Pulse Density Modulation)
microphone input support
Smart peripherals
Fitness tracker - Wristband
13
TFT Display
STM32L4
Sensors
FSMC
Parallel interface to TFT
SPI
Up to 40 MHz speed
I²C
3x I²C FM+(1 Mbit/s),
SMBus/PMBus
Batch Acquisition Mode (BAM)
USB
USB OTG 2.0
full-speed,
LPM and BCD
SPI / UART
3x SPIs (4x SPIs with the
Quad SPI)
6x USARTs (ISO 7816, LIN,
IrDA, modem)
OPAMP
2x op amp with
built-in PGA
DAC
SAI
2x serial audio interfaces
2x 12-bit DAC,
low-power sample and hold
SWP
Single wire protocol
master interface (SWPMI)
ADC
3× 12-bit ADC 5 MSPS,
up to 16-bit with hardware
oversampling, 200 μA/MSPS
2 Innovation
Motor Control :
Smart Peripherals
Industrial Sensors
2x 16-bit advanced
motor-control timers
3x 12-bit ADCs: 5 MSPS,
with up to 16-bit with hardware oversampling,
200 μA/MSPS
14
LCD Display
8×40 or
4×44
with step-up converter
STM32L4
CAN Bus
(2.0B Active)
High temperature
from -40°C
up to 125°C
TNRG & AES
for Security
SPI / UART
128/256-bit AES
key encryption hardware accelarator
3x SPIs (4x SPIs with the
Quad SPI)
6x USARTs (ISO 7816, LIN,
IrDA, modem)
FSMC
External memory interface
for static memories supporting
SRAM, PSRAM, NOR and NAND
I/Os
Up to 114 GPIOs
I²C
3x I²C FM+(1 Mbit/s), SMBus/PMBus
2 Innovation
RUN & Low power modes (1/2)
• RUN and voltage scaling:
Range
Max frequency
Dynamic consumption
Range 1
80 MHz
~127 uA/MHz
Range 2
26 MHz
~100 uA/MHz
• VBAT domain
• VBAT domain target consumption with RTC/LSE on <300 nA
• Automatic internal switch between VBAT and VDD
• Internal connection to ADC for voltage monitoring
• VBAT charging
15
RUN & Low power modes (2/2)
• STOP 1 mode
• Low power timer clocked by LSI or LSE running in STOP1 mode, wakeup capable
• All I²C and USART with wakeup from STOP1 capability
• Wakeup ~7µs in flash, ~4µs in RAM
• STOP 2 mode
• 1 x Low Power timer wakeup capable
• 1x I²C and 1x Low Power USART with wakeup from STOP2 capability
• Wakeup ~9µs, ~4µs in RAM
• Standby mode
• Configurable pull-up, pull-down or Hi-z on all I/Os (state kept even during wake-up)
• Ultra Low Power BOR always ON
• Possibility to backup 32kbytes of RAM (200 nA)
• Wakeup 20µs
• Shutdown mode
• Configurable pull-up, pull-down or Hi-z on all I/Os (state kept even during wake-up)
• Wakeup 270µs
16
Clock key features
• Choice of clock sources for low-power, accuracy, and performance
• Three internal clock sources
• High-speed internal 16 MHz RC oscillator (HSI)
• Multi-speed internal RC oscillator (MSI)
• Low-speed internal 32 kHz RC oscillator (LSI)
• Two external oscillators
• High-speed external 4 to 48 MHz oscillator (HSE) with clock security system
• Low-speed external 32.768 kHz oscillator (LSE) with clock security system
• Three PLLs, each with three independent outputs
Simplified clock tree
To other PLLs
HSI
/
P
/
Q
/
R
VCO
MSI
/M
*N
HSE
PLL
PLLCLK
To CPU, DMA, memories, AHB peripherals
SYSCLK
AHB
PRESCALE
R
HCLK
APB1
PRESCALER
PCLK1
To APB1
peripherals
APB2
PRESCALER
PCLK2
To APB2
peripherals
PLLCLK
Available in VBAT
and all low-power
modes
Available in all
modes except
Shutdown and
VBAT mode
/
32
LSE
LSI
To RTC, LCD
Clocks
• LSE: programmable amplifier driving capability (2 modes)
• High drive to support high Cload (12.5pF) and faster startup
• Low drive for low power
• MSI auto-calibrated with LSE (seen as LSE PLL like)
• Programmable frequency from 100 kHz to 48 MHz
• Accuracy with LSE:0.25%
• Allows USB FS device functionality with only LSE
• LSI
Parameters
Accuracy over parts
Accuracy over temperature
STM32L15x
26..56KHz
-10% / +4% (0..85°C)
STM32L4x
~5%
19
Analog
26/10/2015
ADC SAR 12-bit
Parameters
Conversion time(12-bit)
Channels
Consumption
STM32L4x
Max. 5 MSPS (14cy@72 MHz)
24 (single ended or differential inputs)
200µA/MSPS
VDDA
1.65V ≤ VDDA ≤ 3.6V
VDDA independent from VDD
VREF
1.2V ≤ VREF+ ≤ VDDA External or generated internally
(2.048V or 2.5V)
DNL
+/-1LSB
INL
+/-2LSB
OFFSET with calibration
+/-2LSB
TUE
+/-5LSB
•
•
•
21
Selectable 6-to 12-bit resolution, programmable speed versus resolution
Up to 16-bit mode selectable (oversampling)
Consumption vs. conversion rate optimization: <20 µA @100 Ksps, ~1mA @5 MSPS
Other analog peripherals
• 2x OPAMPs
• Built-in PGA : gain 1, 2, 4, 8, 16
• 2x rail to rail COMPARATORS
• The 2 inputs and the output available on I/Os
• Configurable propagation delay vs. consumption : 3 modes 300nA, 5µA, 100µA
• Programmable hysteresis : 0, 7mV, 13mV, 25mV (typ)
• Offset : +/-20mV max
• Wakeup from STOP1 and STOP2 capability
• 2x DACs
• Improved offset and TUE
• Low power Sample and Hold mode available in STOP1 mode
22
Digital
26/10/2015
Timers
Timers
STM32L4x
32-bit 4 channels
2
16-bit 4-channels
2
16-bit 2 channels
1
16-bit 1 channels
2
16-bit basic
2
Ultra Low Power Timer
2
16-bit Advanced Timer 4 channels
2
• NEW Low Power Timer 16-bit timer
• 1 output compare
• Configurable output : pulse, PWM
• Independent clocks : LSI, LSE or HSI or external input (can run without internal oscillator)
• Programmable digital glitch filter
• Pulse counter and encoder mode
• Can run in STOP1 and STOP2, wakeup capability
24
Communication peripherals
IP
SPI
USART
I²C
SDMMC
CAN
Main improvements
Programmable frame from 4 to 16bit (bit granularity), TI mode support
32bit FIFO (buffer like) to optimize bus bandwidth (performance & power consumption)
Improved BUSY status bit for optimum usage of the IP
Up to 40 MHz
High speed communication support
Data enable capability to allow the management of external transceivers
Smart card mode improvement with T=1 capability
Dual clock domain (for wake-up keeping right data frame & stable baud rate versus fCPU)
All known limitation correction with Flag management improvement for an easy use
Wake-up on address and multiple slave address capabilities to emulate several devices on the bus
Improved SMBUS function
Fast mode + 20mA capability fully supported
Programmable filter on input pins
Dual clock domain (for wake-up keeping right data frame & stable baud rate versus fCPU)
Supports SD-Card, MMC and SDIO. High speed up to 48 MHz
Supports CAN protocol version 2.0 A, B Active
25
Communication peripherals
IP
USB OTG FS
Serial Audio Interface
Low Power UART
SWP
New communication peripherals
USB with MSI/LSE (32.768kHz quartz) to reach 48MHz with 0.25% accuracy (USB spec).
•Dedicated 3V3 supply input
•1 bidirectional control endpoint + 5 IN endpoints + 5 OUT endpoints
•Link power management (LPM) support
•Battery charging detection (BCD) support,
•Attach Detection Protocol (ADP) support with wakeup from STOP
•Suspend/resume support with wakeup from STOP
No more I²S feature on SPI
2 SAIs (1 SAI is bi-directional)
Dual clock domain (for wake-up keeping right data frame & stable baud rate versus fCPU)
Wake-up from Deep STOP capability
Up to 9600 bauds when clocked by LSE, functional in Deep STOP.
Single Wire Protocol for smartcards (ETSI TS 102 613)
26
Other digital peripherals
• AES
• “Tiny” AES with 256-bit key .
• Encryption or decryption time:
• 297 cycles for 256-bit key
• 214 cycles for 128-bit key
• Galois/Counter Mode (GCM) supported
• RNG
• True Random Generator (32-bit)
• FSMC
• Support the following modes (16- and 8- bit):
•
•
•
•
NAND Flash
SRAM
PSRAM
NOR Flash
27
Other digital peripherals
• NEW : Quad SPI
• Allows to address single, dual and quad SPI external flash
• Execution support, up to 512MB memory mapped
• NEW : Digital Filter for Sigma Delta Modulator
• For connection to external Sigma delta modulator (e.g.: STPMS2)
• Up to 4 filters, 8 multiplexed channels
• Support also digital Microphone Mems (PDM to PCM conversion and filtering done in
HW)
28
High integration
29
High integration with high memory size in small packages
Package size down to 4.4 x 3.8 mm
Connectivity
Parallel Interface
FSMC 8-/16-bit
(TFT-LCD, SRAM, NOR, NAND)
Display
LCD driver 8 x 40
Cortex-M4
80 MHz
FPU
MPU
ETM
USB OTG,
1x SD/SDIO/MMC, 3 x SPI,
3 x I²C, 1x CAN, 1 x Quad SPI,
5 x USART + 1 x ULP UART,
1 x SWP
DMA
Timers
ART Accelerator™
17 timers including:
2 x 16-bit advanced motor
control timers
2 x ULP timers
7 x 16-bit-timers
2 x 32-bit timers
Up to
1-Mbyte Flash with
ECC
Dual Bank
Digital
AES (256-bit), TRNG, 2 x SAI,
DFSDM (8 channels)
Analog
128-Kbyte RAM
I/Os
Up to 114 I/Os
Touch-sensing controller
3 x 16-bit ADC, 2 x DAC,
2 x comparators, 2 x op amps
1 x temperature sensor
3 Integration and safety
Safety and security
30
Integrated safety and security features
SAFETY
• Brown-out Reset in all
modes
• Clock Security System
• SRAM parity check
• Backup byte registers
• Supply monitoring
• Flash with ECC with
status register (address)
• Dual watchdog
ULP with
performance
SECURITY
• Anti-tamper detection
• Memory Protection Unit
(MPU)
• Read and Write Protection
• Unique ID
• AES-256 Encryption
• JTAG fuse
• True Random Number
Generator
• Software IP Protection
3 Integration and safety
STM32L4: continuity in STM32 portfolio
31
9 product series / 32 product lines
STM32L4 benefits from pin-to-pin compatibility across the family
2
High-performance
398 CoreMark
120 MHz
150 DMIPS
4
Mainstream
106 CoreMark
48 MHz
38 DMIPS
75 CoreMark
32 MHz
26 DMIPS
Cortex-M0
Cortex-M0+
number of lines
608 CoreMark
180 MHz
225 DMIPS
5
Cortex-M3
1 000 CoreMark
200 MHz
428 DMIPS
6
(*) from CCM-SRAM
3
93 CoreMark
32 MHz
33 DMIPS
1
245 CoreMark*
72 MHz
90 DMIPS
177 CoreMark
72 MHz
61 DMIPS
3
Ultra-low-power
7
1
273 CoreMark
80 MHz
100 DMIPS
Cortex-M4
Cortex-M7
4 Great investment
STM32L ULP offer
32
STM32L4 completes the ultra-low-power family
Cost-smart
ULP Champion
Broad Range
Foundation
ULP with
performance
Cortex-M0+ @ 32 MHz
Operating range:
1.65 to 3.6V
8/16-bit applications
Numerous pin counts
Cortex-M3 @ 32 MHz
Operating range:
1.65 to 3.6V
Wide choice of
memory sizes
Cortex-M4 w/ FPU @ 80 MHz
Operating range:
1.71 to 3.6V
Advanced Peripheral
Performance
3 product lines,
Cost-effective,
Smaller packages
USB, LCD, Analog
16 to 192 Kbytes of Flash
Up to 20 Kbytes of SRAM
3 product lines,
USB, LCD, AES,
Rich Analog
True EEPROM,
Dual bank Flash (RWW)
32 to 512 Kbytes of Flash
Up to 80 Kbytes of SRAM
3 product lines,
ADC 5 Msps, PGA, Compar.,
DAC, op amp, USB OTG,
LCD, AES
256 Kbytes to 1 Mbyte of
Flash
Up to 128 Kbytes of SRAM
4 Great investment
STM32L, a complete offer
33
STM32L4 completes the ultra-low-power family
100 DMIPS
273 CoreMark
Performance
More
performance
More memory and pin counts
Flash size (bytes)
1M
512 K
384 K
256 K
192 K
128 K
64 K
32 K
16 K
33 DMIPS
93 CoreMark
8K
Pins
20
26 DMIPS
75 CoreMark
28
36
32
48
49
63
64
100
132
144
More packages
WLCSP
32
32
80
QFN
BGA
LQFP
MHz
4 Great investment
Cortex®-M4 (DSP + FPU) – 80 MHz
STM32L4 series
•
•
•
•
•
•
•
ART Accelerator™
USART, SPI, I²C
Quad SPI
16 and 32-bit timers
SAI + audio PLL
SWP
1x CAN
2x
RAM Memory
2x
Op
(KB)
I/F
Comp
amps
8-ch /
4x
16- bit
Sigma
ADC
Delta
(5 Msps)
Interface
Segment
AES
LCD
128/256-bit
Driver
Product
line
Flash
(KB)
STM32L471
Access
512
to
1024
128
SDIO
FSMC



3
• 2x 12-bit DAC
STM32L475
• Temperature sensor USB OTG
256
to
1024
128
SDIO
FSMC



3

• Low voltage 1.71
to 3.6 V
• VBAT Mode
• Unique ID
• Capacitive Touch
sensing
STM32L476
USB OTG &
LCD
256
to
1024
128
SDIO
FSMC



3

Up to
8x40
STM32L486
USB OTG &
LCD & AES
1024
128
SDIO
FSMC



3

Up to
8x40
Legend:
USB2.0
OTG FS
34

Available in Q2/2015
4 Great investment
STM32L4 portfolio
35
Flash size (bytes)
STM32L486RG
1M
STM32L486JG
STM32L486VG
STM32L486QG
STM32L486ZG
5
STM32L476RG
STM32L476JG
STM32L476VG
STM32L476QG
STM32L476ZG
512 K
STM32L476RE
STM32L476JE
STM32L476VE
STM32L476QE
STM32L476ZE
256 K
STM32L476RC
STM32L476VC
Pin count
LQFP64
WLCSP72
LQFP100
(10x10x1.4 mm) (4.4x3.8x0.585 mm) (14x14x1.4 mm)
Legend:
With 128/256-bit AES Hardware Encryption
UFBGA132
(7x7x0.6 mm)
LQFP144
(20x20x1.4 mm)
Without 128/256-bit AES Hardware Encryption
Available in Q2/2015
4 Great investment
STM32L4 ecosystem
HARDWARE TOOLS
SOFTWARE TOOLS
(Available in Q2/2015)
(Available in Q2/2015)
STM32 Nucleo
Discovery kit
Evaluation board
36
STM32CubeMX featuring code generation and power
consumption calculation
5
Flexible
prototyping
Key feature
prototyping
Full feature
evaluation
4 Great investment
SUMMARY 4 Keys of STM32 L4 series
1
ULP leader and performance booster
2
Innovation
3
Integration and safety
4
Great Investment
37
Cortex®-M4 (DSP + FPU) – 80 MHz
STM32L4 series
Product
line
FLASH
(KB)
RAM
(KB)
Memory
I/F
2 x OpAmp
2x
Comp.
8ch / 4x
Sigma
Delta
Interface
12- bit ADC
5 Msps
16 bit HW
oversampling
STM32L471
Access
512
to
1024
128
SDIO
FSMC



3
USB2.0
OTG FS
Segment
LCD
Driver
•
•
•
•
•
•
•
ART Accelerator™
USART, SPI, I²C
QuadSPI
16 and 32-bit timers
SAI + audio PLL
SWP
1x CAN
•
•
2x 12-bit DAC
Temperature sensor
STM32L475
USB OTG
256
to
1024
128
SDIO
FSMC



3

•
Low voltage 1.71V to
3.6V
Vbat Mode
Unique ID
Capacitive Touch
sensing
STM32L476
USB OTG &
LCD
256
to
1024
128
SDIO
FSMC



3

Up to
8x40
STM32L486
USB OTG &
LCD & AES
1024
128
SDIO
FSMC



3

Up to
8x40
•
•
•
AES
128/256-bit

38
Thank you
www.st.com/stm32
39