User-xXx escribió:ST72321Rx
ST72321ARx ST72321Jx
64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC,
five timers, SPI, SCI, I2C interface
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:
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 oscillators,
internal RC oscillator and bypass for
external clock
– PLL for 2x frequency multiplication
– Four Power Saving Modes: Halt, Active-Halt,
Wait and Slow
http://www.st.com/stonline/products/lit ... s/7599.pdf