Description

The ST72521BTAACHXS is an electronic component model belonging to the IC Chips product category. It is a member of the ST7 microcontroller family designed for mid-range applications with a CAN bus interface (Controller Area Network). These devices are based on a common industry standard 8-bit core, featuring an enhanced instruction set and are available with FLASH or ROM program memory.

Specifications and features

• Memories:
  • 32K to 60K dual voltage High Density Flash (HDFlash) or ROM with read-out protection capability.
  • In-Application Programming and In-Circuit Programming for HDFlash devices.
  • 1K to 2K RAM.
  • HDFlash endurance: 100 cycles, data retention: 20 years at 55°C.
• Clock, Reset And Supply Management:
  • Enhanced low voltage supervisor (LVD) for main supply and auxiliary voltage detector (AVD) with interrupt capability.
  • Clock sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock.
  • PLL for 2x frequency multiplication.
  • Four power saving modes: Halt, Active-Halt, Wait and Slow.
• Interrupt Management:
  • Nested interrupt controller.
  • 14 interrupt vectors plus TRAP and RESET.
  • Top Level Interrupt (TLI) pin.
  • 15 external interrupt lines (on 4 vectors).
• Up to 64 I/O Ports:
  • 48 multifunctional bidirectional I/O lines.
  • 34 alternate function lines.
  • 16 high sink outputs.
• 5 Timers:
  • Main Clock Controller with: Real time base, Beep and Clock-out capabilities.
  • Configurable watchdog timer.
  • Two 16-bit timers with: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes.
  • 8-bit PWM Auto-Reload timer with: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector.
• 4 Communications Interfaces:
  • SPI synchronous serial interface.
  • SCI asynchronous serial interface.
  • I2C multimaster interface (SMbus V1.1 compliant).
  • CAN interface (2.0B Passive).
• Analog peripheral (low current coupling):
  • 10-bit ADC with 16 input robust input ports.
• Instruction Set:
  • 8-bit Data Manipulation.
  • 63 Basic Instructions.
  • 17 main Addressing Modes.
  • 8 x 8 Unsigned Multiply Instruction.
• Development Tools:
  • Full hardware/software development package.
  • In-Circuit Testing capability.

Application Scenarios

The ST72521BTAACHXS is suitable for mid-range applications that require a CAN bus interface. It is commonly used in electronic devices such as automotive systems, industrial control systems, and communication equipment.

Comparison

• Wide range of memory options.
• Enhanced low voltage supervisor and auxiliary voltage detector.
• Multiple clock sources and power saving modes.
• Extensive interrupt management capabilities.
• High number of I/O ports.
• Multiple timers with various functionalities.
• Supports various communication interfaces.
• Includes analog peripheral with ADC.
• Complete development tools available.
• In-Circuit Testing capability.

None identified.