The ST72F321 and ST72321 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.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.
The enhanced instruction set and addressing modes of the ST7 offer both power and flexibility to software developers, enabling the design of highly efficient and compact application code. In addition to standard 8-bit data management, all ST7 microcontrollers feature true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes. Related Documentation AN1131: Migrating applications from ST72511/ 311/314 to ST72521/321/324
Features | ST72321R9 | ST72321AR7 | ST72321R6 |
ST72321AR9 | ST72321AR6 | ||
ST72321J9 | ST72321J7 | ||
Program memory - bytes | Flash 60K | Flash 48K | Flash 32K |
RAM (stack) - bytes | 2048 (256) | 1536 (256) | 1024 (256) |
Operating Voltage | 3.8V to 5.5V | ||
Temp. Range | up to -40°C to +125°C | ||
Package | TQFP64 14x14 (R), TQFP64 10x10 (AR), TQFP44 10x10 (J) |
Part Number | Package | RoHS Compliance Grade |
Marketing Status |
Pin Count |
Program Memory Type |
Internal ROM Size |
A/D Converter |
12 or 16-bit timer (IC/OC/PWM) |
8-bit timer (IC/OC/PWM) |
Other timer functions |
Serial Interface |
I/Os (High Current) |
Supply Voltage (Vcc) |
Supply Voltage (Vcc) |
Other Functions |
Operating Temperature |
Operating Temperature |
Packing Type |
nom | nom | min | max | min | max | |||||||||||||
kB | V | V | °C | °C | ||||||||||||||
ST72F321AR6T3 | TQFP 64 10x10x1.4 1 | Ecopack2 | Active | 64 | FLASH | 32 | 16x10-bit | 2x16-bit (4/4/2) | 1(2/4/4) | WDG, RTC | SPI/SCI/I²C | 48(16) | 3.8 | 5.5 | not recommended for new design (use ST72321BAR6) | -40 | 125 | Tray |
ST72F321AR6T6 | TQFP 64 10x10x1.4 1 | Ecopack2 | Active | 64 | FLASH | 32 | 16x10-bit | 2x16-bit (4/4/2) | 1(2/4/4) | WDG, RTC | SPI/SCI/I²C | 48(16) | 3.8 | 5.5 | not recommended for new design (use ST72321BAR6) | -40 | 85 | Tray |