Datasheet
Functional overview STM32L15xCC STM32L15xRC STM32L15xUC STM32L15xVC
12/132 DocID022799 Rev 6
3 Functional overview
Figure 1. Ultra-low-power STM32L15xxC block diagram
EXT.IT
WinWA T CH D OG
12bit AD C
JTAG &SW
25 A F
JTDI
J T CK /S WC LK
JTMS/SWDAT
NJTRST
JTDO
NRST
V
DD33
=1.65V to 3.6V
83 A F
USB 2.0 FS device
US B _DP
US B _DM
MO S I, MIS O, S CK ,N S S ,WS ,CK
SRAM32K
2x(8x16bit)
WKU P
f
max
:32MHz
V
SS
SCL,SDA,SMBus,PMBus
I2C 2
V
DD R E F _AD C
*
GP DMA 7 channels
T IMER2
TIMER3
XTAL OSC
1-24 MH z
XTAL 32kHz
O S C _IN
O S C _OUT
O S C 32_ OU T
O S C 32_ IN
AH B P C L K
HCLK
APBPCLK
as A F
EE P R OM
VOLT. REG.
V
DDC OR E
POWER
B ac k up interfac e
as A F
TIMER4
BusMatrix 5M/5S
64 bit
Interfac e
RTC V2
RC HS I
M3 C P U
Ibus
Dbus
obl
EE²
US B S RA M 512 B
Trace Controller ETM
US AR T1
US ART2
SPI2/I2S
Backup
reg 12 8
SCL,SDA
I2C 1
as AF
RX,TX,CTS, RTS,
US ART3
Temp sensor
V
S S R E F_AD C
*
AHB :F
max
=32MHz
4 C hannels
4 C hannels
4 C hannels
RC MSI
S tandb y
WD G 32K
@VDD 33
VDD A /
VS S A
S martC ard as AF
RX,TX, CTS, RTS,
SmartCard as AF
RX,TX, CTS, RTS,
S martCard as AF
NVIC
SPI1
MOS I,MIS O ,
SCK ,NSS as AF
IF
interface
@ V DD A
PVD
BOR
Int
@VDD 33
AW U
T A MPER
System
PA[15:0]
PB[15:0]
PC[15:0]
G P IO P O R TC
PD[15:0]
G P IO P O R T D
PE[15:0]
G P IO P O R T E
Px
LCD 8x40
SEGx
COMx
12bit DAC 1
FIFI
IF
12bit DAC 2
DAC_OUT1 as AF
DAC_OUT2 as AF
MP U
Vref
GP Comp
BOR /Bgap
C OMPx_ INx
PU / PD
PDR
PDR
TIMER6
TIMER7
TIMER9
TIMER10
TIMER11
2 C hann els
1Channel
1Channel
General purpose
timers
256 KB P R OG RA M
8KB DA TA
8KB B OO T
LCD Booster
V
LCD
=2.5V to 3.6V
@VDD 33
V
LCD
PH[2:0]
G P IO P O R T H
RC L S I
FCLK
GP D MA2 5 c hannels
TIMER5 (32bits)
4 C hannels
MOSI,MISO,SCK ,NSS,WS,CK
2x(8x16bit)
MCK ,S D a s A F
SPI3/I2S
OPAMP1
OPAMP2
MCK ,S D a s A F
TRACECK, TRACED0, TRACED1, TRACED2
pbus
Cap. sens
Supply
monitoring
@VDDA
@VDDA
@VDDA
@VDDA
Supply monitoring
Cap. sensing
G P IO P O R T B
G P IO P O R T A
MS19482V4
APB2: f
MAX
= 32 MHz
APB1: f
MAX
= 32 MHz
PLL &
Clock
Mgmt
VINP
VINM
VOUT
VINP
VINM
VOUT
RTC_OUT
AHB/APB2 AHB/APB1