ST72F321J9T6                   Description

 The ST72F321 Flash and ST72321 ROM devices are members of the ST7 microcontroller family designed for mid-range applications. All devices are based on a common industrystandard 8-bit core, featuring an enhanced instruction set and are available with Flash or ROM program memory. The ST7 family architecture offers both power and flexibility to software developers, enabling the design of highly efficient and compact application code.

ST72F321J9T6                              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 reten- tion: 40 years at 85°C

■ Clock, Reset And Supply Management

– Enhanced low voltage supervisor (LVD) for main supply and auxiliar voltage detector

(AVD) with interrupt capability

– Clock sources: crystal/ceramic resonator os- cillators, 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 on 64-pin devices

– 15/9 external interrupt lines (on 4 vectors)

■ Up to 48 I/O Ports

– 48/32/24 multifunctional bidirectional I/O lines

– 34/22/17 alternate function lines

– 16/12/10 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 out- put compares, external clock input on one timer, PWM and pulse generator modes

ST72F321J9T6                           Applications

Typical applications are consumer, home, office and industrial products.