Product overview
Description
The ultra-low-power STM32L100x6/8/B-A devices incorporate the connectivity power of the universal serial bus (USB) with the high-performance ARM® Cortex®-M3 32-bit RISC core operating at a frequency of 32 MHz (33.3 DMIPS), a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 128 Kbytes and RAM up to 16 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
All the devices offer a 12-bit ADC, 2 DACs and 2 ultra-low-power comparators, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.
Moreover, the STM32L100x6/8/B-A devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB.
They also include a real-time clock with sub-second counting and a set of backup registers that remain powered in Standby mode.
Finally, the integrated LCD controller has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.
The ultra-low-power STM32L100x6/8/B-A devices operate from a 1.8 to 3.6 V power supply. They are available in the -40 to +85 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.
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All features
- Ultra-low-power platform
- 1.8 V to 3.6 V power supply
- -40°C to 85°C temperature range
- 0.28 µA Standby mode (2 wakeup pins)
- 1.11 µA Standby mode + RTC
- 0.44 µA Stop mode (16 wakeup lines)
- 1.38 µA Stop mode + RTC
- 10.9 µA Low-power Run mode
- 185 µA/MHz Run mode
- 10 nA ultra-low I/O leakage
- < 8 µs wakeup time
- Core: ARM® Cortex®-M3 32-bit CPU
- From 32 kHz up to 32 MHz max
- 1.25 DMIPS/MHz (Dhrystone 2.1)
- Memory protection unit
- Reset and supply management
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Ultra-low-power POR/PDR
- Programmable voltage detector (PVD)
- Clock sources
- 1 to 24 MHz crystal oscillator
- 32 kHz oscillator for RTC with calibration
- High Speed Internal 16 MHz
- Internal low-power 37 kHz RC
- Internal multispeed low-power 65 kHz to 4.2 MHz
- PLL for CPU clock and USB (48 MHz)
- Pre-programmed bootloader
- USART supported
- Development support
- Serial wire debug supported
- JTAG and trace supported
- Up to 51 fast I/Os (42 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
- Memories
- Up to 128 Kbytes of Flash memory with ECC
- Up to 16 Kbytes of RAM
- Up to 2 Kbytes of true EEPROM with ECC
- 20-byte backup register
- LCD Driver for up to 8x28 segments
- Support contrast adjustment
- Support blinking mode
- Step-up converter on board
- Rich analog peripherals (down to 1.8 V)
- 12-bit ADC 1 Msps up to 24 channels
- 12-bit DAC 2 channels with output buffers
- 2x ultra-low-power comparators(window mode and wakeup capability)
- DMA controller 7x channels
- 8x peripheral communication interfaces
- 1x USB 2.0 (internal 48 MHz PLL)
- 3x USART (ISO 7816, IrDA)
- 2x SPI 16 Mbit/s
- 2x I2C (SMBus/PMBus)
- 10x timers: 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)
- CRC calculation unit
- Ultra-low-power platform
Circuit Diagram
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STMicroelectronics - STM32L100R8-A
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All resources
| Resource title | Version | Latest update |
|---|
System View Description (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.4 | 11 Aug 2023 | 11 Aug 2023 |
IBIS models (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 13 Jan 2016 | 13 Jan 2016 |
BSDL files (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.1 | 13 Jan 2016 | 13 Jan 2016 |
Quality and Reliability
| Part Number | Marketing Status | Package | SMPS | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|---|
| STM32L100R8T6A | Active | LQFP 64 10x10x1.4 mm | - | Industrial | Ecopack2 | |
| STM32L100R8T6ATR | Active | LQFP 64 10x10x1.4 mm | - | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | D/A Converters (typ) (12-bit) | Timers (typ) (16-bit) | Timers (typ) (32-bit) | Number of Channels (typ) | SMPS | Number of Channels (typ) | UART (typ) | I/Os (High Current) | Integrated op-amps | Comparator | SPI (typ) | USART (typ) | Number of Channels (typ) | I2S (typ) | Advanced Motor Control Timers | CAN (2.0) | CAN (FD) | ||
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| STM32L100R8T6A | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32L100R8T6ATR | | | distributors No availability of distributors reported, please contact our sales office |
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STM32L100R8T6A Active
STM32L100R8T6ATR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors