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Manufacturer Part #


STR7 Series 256 kB Flash 64 kB RAM ARM 32-Bit Microcontroller - LQFP-64

Mfr. Name: STMicroelectronics
Standard Pkg:
Product Variant Information section
Date Code: 1901
Product Specification Section
Technical Attributes
Attributes Table
Family Name: STR7
Core Processor: ARM7TDMI
Program Memory Type: Flash
Flash Size (Bytes): 256kB
RAM Size: 64kB
Speed: 66MHz
No of I/O Lines: 30
InterfaceType / Connectivity: CAN/I2C/SPI/UART/USB
Peripherals: CAN/I2C/On-Chip-ADC/PWM/SPI/UART/USB/Watchdog
Number Of Timers: 4
Supply Voltage: 3V to 3.6V
Operating Temperature: -40°C to +85°C
On-Chip ADC: 4-chx12-bit
Watchdog Timers: 1
Package Style:  TQFP-64
Mounting Method: Surface Mount
Features & Applications

The STR711FR2T6 is a ARM7TDMI 32-bit microcontroller with a USB, 256+16K Flash in a 64-Pin LQFP package.

The STR71x series is a family of ARM-powered 32-bit microcontrollers with embedded Flash and RAM. It combines the high performance ARM7TDMI CPU with an extensive range of peripheral functions and enhanced I/O capabilities. STR71xF devices have on-chip high-speed single voltage FLASH memory and high-speed RAM. STR710R devices have high-speed RAM but no internal Flash. The STR71x family has an embedded ARM core and is therefore compatible with all ARM tools and software.


  • Core
    • ARM7TDMI 32-bit RISC CPU
    • 59 MIPS @ 66 MHz from SRAM
    • 45 MIPS @ 50 MHz from Flash
  • Memories
    • Up to 256 Kbytes Flash program memory (10 kcycles endurance, 20 years retention @ 85° C)
    • 16 Kbytes Flash data memory (100 kcycles endurance, 20 years retention@ 85° C)
    • Up to 64 Kbytes RAM
    • External Memory Interface (EMI) for up to 4 banks of SRAM, Flash, ROM
    • Multi-boot capability
  • Clock, reset and supply management
    • 3.0 to 3.6 V application supply and I/Os
    • Internal 1.8 V regulator for core supply
    • Clock input from 0 to 16.5 MHz
    • Embedded RTC osc. running from external 32 kHz crystal
    • Embedded PLL for CPU clock
    • Realtime Clock for clock-calendar function
    • 5 power saving modes: SLOW, WAIT, LPWAIT, STOP and STANDBY modes
  • Nested interrupt controller
    • Fast interrupt handling with multiple vectors
    • 32 vectors with 16 IRQ priority levels
    • 2 maskable FIQ sources
  • Up to 48 I/O ports
    • 30/32/48 multifunctional bidirectional I/Os Up to 14 ports with interrupt capability
  • 5 Timers
    • 16-bit watchdog timer
    • 3 16-bit timers with 2 input captures, 2 output compares, PWM and pulse counter
    • 16-bit timer for timebase functions
  • 10 communications interfaces
    • 2 I2C interfaces (1 multiplexed with SPI)
    • 4 UART asynchronous serial interfaces
    • Smartcard ISO7816-3 interface on UART1
    • 2 BSPI synchronous serial interfaces
    • CAN interface (2.0B Active)
    • USB Full Speed (12 Mbit/s) Device Function with Suspend and Resume
    • HDLC synchronous communications
  • 4-channel 12-bit A/D converter
    • Sampling frequency up to 1 kHz
    • Conversion range: 0 to 2.5 V
  • Development tools support
    • Atomic bit SET and RES operations
Pricing Section
Minimum Order:
Multiple Of:
On Order:
Factory Stock:Factory Stock:
Factory Lead Time:
20 Weeks
Web Price
Product Variant Information section