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INTRODUCTION

The ST7MCx device is member of the ST7 microcontroller family designed for mid-range applications with a Motor Control dedicated peripheral.

All devices are based on a common industrystandard 8-bit core, featuring an enhanced instruction set and are available with FLASH, ROM or FASTROM program memory.

Under software control, all devices can be placed in Wait, Slow, Active-halt or Halt mode, reducing power consumption when the application is in idle or stand-by state.

Features

■ Memories

– 8K to 60K dual voltage Flash Program memory or ROM with read-out protection capability, In-application programming and In-circuit programming.

– 384 to 1.5K RAM

– HDFlash endurance: 100 cycles, data retention: 40 years at 85°C

■ Clock, reset and supply management

– Enhanced reset system

– Enhanced low voltage supervisor (LVD) for main supply and auxiliary voltage detector (AVD) with interrupt capability

– Clock sources: crystal/ceramic resonator oscillators and by-pass for external clock, clock security system.

– Four power saving modes: Halt, Active-halt, Wait and Slow

■ Interrupt management

– Nested interrupt controller

– 14 interrupt vectors plus TRAP and RESET

– MCES top level interrupt pin

– 16 external interrupt lines (on 3 vectors)

■ Up to 60 I/O ports

– up to 60 multifunctional bidirectional I/O lines

– up to 41 alternate function lines

– up to 12 high sink outputs

■ 5 timers

– Main clock controller with: Real-time base, Beep and clock-out capabilities

– Configurable window watchdog timer

– Two 16-bit timers with: 2 input captures, 2 output compares, external clock input, 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

■ 2 Communication interfaces

– SPI synchronous serial interface

– LINSCI? asynchronous serial interface

■ Brushless motor control peripheral

– 6 high sink PWM output channels for sinewave or trapezoidal inverter control

– Motor safety including asynchronous emergency stop and write-once registers

– 4 analog inputs for rotor position detection (sensorless/hall/tacho/encoder)

– Permanent magnet motor coprocessor including multiplier, programmable filters, blanking windows and event counters

– Operational amplifier and comparator for current/voltage mode regulation and limitation

■ Analog peripheral

– 10-bit ADC with 16 input pins

■ In-circuit Debug

■ Instruction set

– 8-bit data manipulation

– 63 basic instructions with illegal opcode detection

– 17 main Addressing modes

– 8 x 8 unsigned multiply instruction

– True bit manipulation

■ Development tools

– Full hardware/software development package