ARM core with embedded Flash and RAMThe 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.Extensive tools supportSTMicroelectronics’ 32-bit, ARM core-based microcontrollers are supported by a complete range of high-end and low-cost development tools to meet the needs of application developers. This extensive line of hardware/software tools includes starter kits and complete development packages all tailored for ST’s ARM core-based MCUs. The range of development packages includes third-party solutions that come complete with a graphical development environment and an in-circuit emulator/programmer featuring a JTAG application interface. These support a range of embedded operating systems (OS), while several royalty-free OSs are also available.
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/OsUp 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 communication 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
