Description
STM32F103xC, STM32F103xD, STM32F103xE
2.2
Full compatibility throughout the family
The STM32F103xx is a complete family whose members are fully pin-to-pin, software and
feature compatible. In the reference manual, the STM32F103x4 and STM32F103x6 are
identified as low-density devices, the STM32F103x8 and STM32F103xB are referred to as
medium-density devices and the STM32F103xC, STM32F103xD and STM32F103xE are
referred to as high-density devices.
Low-density and high-density devices are an extension of the STM32F103x8/B medium-
density devices, they are specified in the STM32F103x4/6 and STM32F103xC/D/E
datasheets, respectively. Low-density devices feature lower Flash memory and RAM
capacities, less timers and peripherals. High-density devices have higher Flash memory
2
and RAM capacities, and additional peripherals like SDIO, FSMC, I S and DAC while
remaining fully compatible with the other members of the family.
The STM32F103x4, STM32F103x6, STM32F103xC, STM32F103xD and STM32F103xE
are a drop-in replacement for the STM32F103x8/B devices, allowing the user to try different
memory densities and providing a greater degree of freedom during the development cycle.
Moreover, the STM32F103xx performance line family is fully compatible with all existing
STM32F101xx access line and STM32F102xx USB access line devices.
Table 3.
STM32F103xx family
Low-density devices Medium-density devices
High-density devices
16 KB
Flash
32 KB
64 KB
Flash
128 KB
Flash
256 KB
Flash
384 KB
Flash
512 KB
Flash
Flash(1)
Pinout
48 or
6 KB RAM 10 KB RAM 20 KB RAM 20 KB RAM 64 KB(2) 64 KB RAM 64 KB RAM
RAM
144
100
5 × USARTs
4 × 16-bit timers, 2 × basic timers
3 × SPIs, 2 × I2Ss, 2 × I2Cs
3 × USARTs
USB, CAN, 2 × PWM timers
3 × 16-bit timers
2 × SPIs, 2 × I2Cs, USB,
CAN, 1 × PWM timer
2 × ADCs
2 × USARTs
3 × ADCs, 2 × DACs, 1 × SDIO
64
2 × 16-bit timers
1 × SPI, 1 × I2C, USB,
CAN, 1 × PWM timer
2 × ADCs
FSMC (100- and 144-pin packages(3)
)
48
36
1. For orderable part numbers that do not show the A internal code after the temperature range code (6 or 7),
the reference datasheet for electrical characteristics is that of the STM32F103x8/B medium-density
devices.
2. 64 KB RAM for 256 KB Flash are available on devices delivered in CSP packages only.
3. Ports F and G are not available in devices delivered in 100-pin packages.
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Doc ID 14611 Rev 7
STMICROELECTRONICS [ ST ]
