STM32F101XC datasheet(15/106 Pages) STMICROELECTRONICS

15 / 106 page

STM32F101xC, STM32F101xD, STM32F101xE

Description

Doc ID 14610 Rev 7

15/106

The ARM Cortex™-M3 32-bit RISC processor features exceptional code-efficiency,

delivering the high-performance expected from an ARM core in the memory size usually

associated with 8- and 16-bit devices.

The STM32F101xC, STM32F101xD and STM32F101xE access line family having an

embedded ARM core, is therefore compatible with all ARM tools and software.

Figure 1 shows the general block diagram of the device family.

2.3.2

Embedded Flash memory

256 to 512 Kbytes of embedded Flash are available for storing programs and data.

2.3.3

CRC (cyclic redundancy check) calculation unit

The CRC (cyclic redundancy check) calculation unit is used to get a CRC code from a 32-bit

data word and a fixed generator polynomial.

Among other applications, CRC-based techniques are used to verify data transmission or

storage integrity. In the scope of the EN/IEC 60335-1 standard, they offer a means of

verifying the Flash memory integrity. The CRC calculation unit helps compute a signature of

the software during runtime, to be compared with a reference signature generated at link-

time and stored at a given memory location.

2.3.4

Embedded SRAM

Up to 48 Kbytes of embedded SRAM accessed (read/write) at CPU clock speed with 0 wait

states.

2.3.5

FSMC (flexible static memory controller)

The FSMC is embedded in the STM32F101xC, STM32F101xD and STM32F101xE access

line family. It has four Chip Select outputs supporting the following modes: PC

Card/Compact Flash, SRAM, PSRAM, NOR and NAND.

Functionality overview:

●

The three FSMC interrupt lines are ORed in order to be connected to the NVIC

●

No read FIFO

●

Code execution from external memory except for NAND Flash and PC Card

●

No boot capability

●

The targeted frequency is HCLK/2, so external access is at 18 MHz when HCLK is at

36 MHz

2.3.6

LCD parallel interface

The FSMC can be configured to interface seamlessly with most graphic LCD controllers. It

supports the Intel 8080 and Motorola 6800 modes, and is flexible enough to adapt to

specific LCD interfaces. This LCD parallel interface capability makes it easy to build cost-

effective graphic applications using LCD modules with embedded controllers or high-

performance solutions using external controllers with dedicated acceleration.

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