This is information on a product in full production.
March 2021 DS6372 Rev 17 1/141
STM8L151x4, STM8L151x6,
STM8L152x4, STM8L152x6
8-bit ultra-low-power MCU, up to 32 KB Flash, 1 KB Data EEPROM,
RTC, LCD, timers, USART, I2C, SPI, ADC, DAC, comparators
Datasheet - production data
Features
• Operating conditions
– Operating power supply range 1.8 V to
3.6 V (down to 1.65 V at power down)
– Temp. range: - 40 °C to 85, 105 or 125 °C
• Low power features
– 5 low power modes: Wait, Low power run
(5.1 µA), Low power wait (3 µA), Active-halt
with full RTC (1.3 µA), Halt (350 nA)
– Consumption: 195 µA/MHz + 440 µA
– Ultra-low leakage per I/0: 50 nA
– Fast wakeup from Halt: 4.7 µs
• Advanced STM8 core
– Harvard architecture and 3-stage pipeline
– Max freq. 16 MHz, 16 CISC MIPS peak
– Up to 40 external interrupt sources
• Reset and supply management
– Low power, ultra-safe BOR reset with
5 selectable thresholds
– Ultra-low-power POR/PDR
– Programmable voltage detector (PVD)
• Clock management
– 1 to 16 MHz crystal oscillator
– 32 kHz crystal oscillator
– Internal 16 MHz factory-trimmed RC
– Internal 38 kHz low consumption RC
– Clock security system
• Low power RTC
– BCD calendar with alarm interrupt
– Auto-wakeup from Halt w/ periodic interrupt
• LCD: up to 4x28 segments w/ step-up
converter
• Memories
– Up to 32 Kbytes of Flash program memory
and 1 Kbyte of data EEPROM with ECC,
RWW
– Flexible write and read protection modes
– Up to 2 Kbytes of RAM
• DMA
– 4 channels; supported peripherals: ADC,
DAC, SPI, I2C, USART, timers
– 1 channel for memory-to-memory
• 12-bit DAC with output buffer
• 12-bit ADC up to 1 Msps/25 channels
– T. sensor and internal reference voltage
• 2 ultra-low-power comparators
– 1 with fixed threshold and 1 rail to rail
– Wakeup capability
• Timers
– Two 16-bit timers with 2 channels (used as
IC, OC, PWM), quadrature encoder
– One 16-bit advanced control timer with
3 channels, supporting motor control
– One 8-bit timer with 7-bit prescaler
– 2 watchdogs: 1 window, 1 independent
– Beeper timer with 1, 2 or 4 kHz frequencies
• Communication interfaces
– Synchronous serial interface (SPI)
– Fast I2C 400 kHz SMBus and PMBus™
– USART (ISO 7816 interface and IrDA)
• Up to 41 I/Os, all mappable on interrupt vectors
• Up to 16 capacitive sensing channels
supporting touchkey, proximity, linear touch
and rotary touch sensors
• Development support
– Fast on-chip programming and non
intrusive debugging with SWIM
– Bootloader using USART
• 96-bit unique ID
Table 1. Device summary
Reference Part number
STM8L151xx
(without LCD)
STM8L151C4, STM8L151C6, STM8L151K4,
STM8L151K6, STM8L151G4, STM8L151G6
STM8L152xx
(with LCD)
STM8L152C4, STM8L152C6, STM8L152K4,
STM8L152K6
LQFP48
7x7 mm
UFQFPN48
LQFP32
7x7 mm
UFQFPN32 (5x5 mm)
7x7 mm
UFQFPN28 (4x4 mm)
WLCSP28
CSP
www.st.com
Contents STM8L151x4/6, STM8L152x4/6
2/141 DS6372 Rev 17
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Ultra-low-power continuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Central processing unit STM8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.1 Advanced STM8 Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.2 Interrupt controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Reset and supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3.1 Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3.2 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4 Clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.5 Low power real-time clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.6 LCD (Liquid crystal display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.7 Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.8 DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.9 Analog-to-digital converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.10 Digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.11 Ultra-low-power comparators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.12 System configuration controller and routing interface . . . . . . . . . . . . . . . 21
3.13 Touch sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.14 Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.14.1 TIM1 - 16-bit advanced control timer . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.14.2 16-bit general purpose timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.14.3 8-bit basic timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.15 Watchdog timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.15.1 Window watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.15.2 Independent watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
