Datasheet

Description STM32F103xC, STM32F103xD, STM32F103xE
14/143 DS5792 Rev 13
2.2 Full compatibility throughout the family
The STM32F103xC/D/E 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
and RAM capacities, and additional peripherals like SDIO, FSMC, I
2
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
Pinout
Low-density devices Medium-density devices High-density devices
16 KB Flash
32 KB
Flash
(1)
64 KB Flash
128 KB
Flash
256 KB
Flash
384 KB Flash 512 KB Flash
6 KB RAM 10 KB RAM 20 KB RAM 20 KB RAM 48 RAM 64 KB RAM 64 KB RAM
144 5 × USARTs
4 × 16-bit timers, 2 × basic timers
3 × SPIs, 2 × I
2
Ss, 2 × I2Cs
USB, CAN, 2 × PWM timers
3 × ADCs, 2 × DACs, 1 × SDIO
FSMC (100- and 144-pin packages
(2)
)
100
3 × USARTs
3 × 16-bit timers
2 × SPIs, 2 × I
2
Cs, USB,
CAN, 1 × PWM timer
2 × ADCs
64
2 × USARTs
2 × 16-bit timers
1 × SPI, 1 × I
2
C, USB, CAN,
1 × PWM timer
2 × ADCs
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. Ports F and G are not available in devices delivered in 100-pin packages.