STM8L151C2 datasheet(14/123 Pages) STMICROELECTRONICS

14 / 123 page

Functional overview

STM8L151x2, STM8L151x3

14/123

DS7204 Rev 11

Functional overview

Figure 1. Low-density STM8L151x2/3 device block diagram

Legend:

ADC: Analog-to-digital converter

BOR: Brownout reset

DMA: Direct memory access

I²C: Inter-integrated circuit multi master interface

IWDG: Independent watchdog

POR/PDR: Power on reset / power down reset

RTC: Real-time clock

SPI: Serial peripheral interface

SWIM: Single wire interface module

USART: Universal synchronous asynchronous receiver transmitter

WWDG: Window watchdog

There is no TIM1 on STM8L151x2, STM8L151x3 devices.

MS18275V2

Clock

controller

and CSS

Clocks

8-Kbyte

1-Kbyte RAM

to core and

peripherals

IWDG

(38 kHz clock)

Port A

Port B

Port C

Power

VOLT. REG.

WWDG

256-byte

Port D

Port E

Beeper

RTC

memory

Program

Data EEPROM

@VDD

VDD18

V DD=1.65 V

V SS

SWIM

SCL, SDA,

SPI1_MOSI, SPI1_MISO,

SPI1_SCK, SPI1_NSS

USART1_RX, USART1_TX,

USART1_CK

ADC1_INx

COMP1_INP

COMP 1

COMP 2

COMP2_INP

DDA,

SSA

SMB

DDA

SSA

Temp sensor

12-bit ADC1

DDREF

3.6 V

NRST

PA[7:0]

PB[7:0]

PC[7:0]

PD[7:0]

PE[7:0]

PF0

BEEP

ALARM, CALIB,

POR/PDR

OSC_IN,

OSC_OUT

OSC32_IN,

OSC32_OUT

BOR

PVD

PVD_IN

RESET

DMA1 (4 channels)

2 channels

COMP2_INM

Internal reference

voltage

VREFINT out

IR_TIM

1-16 MHz oscillator

16 MHz internal RC

32 kHz oscillator

STM8 Core

16-bit Timer 2

38 kHz internal RC

Interrupt controller

16-bit Timer 3

Debug module

(SWIM)

8-bit Timer 4

Infrared interface

SPI1

I²C1

USART1

SSREF

Port F

up to

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STM8L151C2 数据表(PDF) 14 Page - STMicroelectronics

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