St72321 - 8-bit Mcu with Nested Interrupts, Flash,10-bit Adc, Five Timers, Spi, Sci, I2c Interface

Rev. 1.10 ■ 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, clock security system 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 on 64-pin devices – 15 external interrupt lines (on 4 vectors) ■ Up to 48 I/O Ports – 48/32 multifunctional bidirectional I/O lines – 34/22 alternate function lines – 16/12 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 ■ 3 Communications Interfaces – SPI synchronous serial interface – SCI asynchronous serial interface – I2C multimaster interface ■ 1 Analog peripheral – 10-bit ADC with up to 16 input ports