Download 8-bit ultralow power touch sensing microcontroller with 16 Kbytes

Description
1.2
STM8T850xx
Product overview
Figure 1.
STM8T850 device block diagram
@
Power
16 MHz internal
RC
Clock
Controller
and
CSS
38 kHz internal
RC
VDD18
STM8 core
VSS
Supply supervisor
Address, control and data bases
ProxSense
16 MHz dedicated
internal RC
SCL, SDA
I2C
MOSI, MISO, SCK, NSS
SPI
RX, TX, CK
USART
NRST
16 Kbytes program
memory
Debug module
(SWIM)
PXS_RX(0a..9a, 0b..9b)
PXS_TX(0..14)
PXS_RFIN
PXS_TRIG
POR/PDR
Clocks
to core and
peripherals
Nested interrupt controller
Up to 20 external interrupts
Voltage reg.
VDD = 1.65 V
to 3.6 V
Voltage reg.
PDR
PXS_VREG
VDD
4 Kbytes RAM
AWU
(38 kHz clock)
IWDG
(38 kHz clock)
16-bit timer 2
16-bit timer 3
8-bit timer 4
WWDG
Beeper
BEEP
Port A
PA[7:0]
Port B
PB[6:0]
Port D
PD[7:0]
MS19122V3
Legend:
AWU: Auto-wakeup unit
Int. RC: internal RC oscillator
I²C: Inter-integrated circuit multimaster interface
POR/PDR: Power on reset / power down reset
SPI: Serial peripheral interface
SWIM: Single wire interface module
USART: Universal synchronous / asynchronous receiver / transmitter
IWDG: Independent watchdog
WWDG: Window watchdog
ProxSense™: capacitive sensing peripheral
4/13
Doc ID 018799 Rev 1