STM32F103T8

Manufacturer Part NumberSTM32F103T8
DescriptionMainstream Performance line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN
ManufacturerSTMicroelectronics
STM32F103T8 datasheet
 

Specifications of STM32F103T8

Conversion Range0 to 3.6 VPeripherals Supportedtimers, ADC, SPIs, I2Cs and USARTs
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STM32F103x8, STM32F103xB
2.3.13
DMA
The flexible 7-channel general-purpose DMA is able to manage memory-to-memory,
peripheral-to-memory and memory-to-peripheral transfers. The DMA controller supports
circular buffer management avoiding the generation of interrupts when the controller
reaches the end of the buffer.
Each channel is connected to dedicated hardware DMA requests, with support for software
trigger on each channel. Configuration is made by software and transfer sizes between
source and destination are independent.
The DMA can be used with the main peripherals: SPI, I
advanced-control timers TIMx and ADC.
2.3.14
RTC (real-time clock) and backup registers
The RTC and the backup registers are supplied through a switch that takes power either on
V
supply when present or through the V
DD
registers used to store 20 bytes of user application data when V
The real-time clock provides a set of continuously running counters which can be used with
suitable software to provide a clock calendar function, and provides an alarm interrupt and a
periodic interrupt. It is clocked by a 32.768 kHz external crystal, resonator or oscillator, the
internal low-power RC oscillator or the high-speed external clock divided by 128. The
internal low-power RC has a typical frequency of 40 kHz. The RTC can be calibrated using
an external 512 Hz output to compensate for any natural crystal deviation. The RTC features
a 32-bit programmable counter for long-term measurement using the Compare register to
generate an alarm. A 20-bit prescaler is used for the time base clock and is by default
configured to generate a time base of 1 second from a clock at 32.768 kHz.
2.3.15
Timers and watchdogs
The medium-density STM32F103xx performance line devices include an advanced-control
timer, three general-purpose timers, two watchdog timers and a SysTick timer.
Table 4
compares the features of the advanced-control and general-purpose timers.
Table 4.
Timer feature comparison
Counter
Timer
resolution
TIM1
16-bit
TIM2,
TIM3,
16-bit
TIM4
pin. The backup registers are ten 16-bit
BAT
Counter
Prescaler
DMA request
type
factor
generation
Up,
Any integer
down,
between 1
Yes
up/down
and 65536
Up,
Any integer
down,
between 1
Yes
up/down
and 65536
Doc ID 13587 Rev 13
Description
2
C, USART, general-purpose and
power is not present.
DD
Capture/compare
Complementary
channels
outputs
4
Yes
4
No
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