Linh Kiện Điện Tử Stc89C52Rc

Enhanced 80c51 central processing unit, 6t or 12t per machine cycle Operation voltage range: 5.5v ~ 3.3v (stc89c series) Operation frequency range 0-48mhz @ 12t, or 0-24mhz @ 6t On-chip 8k flash program memory with flexible isp / iap capability On-chip 512 byte ram Be capable of addressing up to 64k byte of external ram Be capable of addressing up to 64k bytes external memory Dual data pointer (dptr) to speed up data movement Three 16-bit timer 2 is an up / down counter with programmable clcok output on p1.0 8 vector-address, 4 level priority interrupt capability One enhanced uart with hardware address-recognition, frame-error detection function, and with self Baud- rate generator. One 15 bits watch-dog-timer with 8-bit pre-scaler (one-time-enabled) Integrate max810 specialized reset circuit Three power management modes: Idle mode and power-down mode Low emi: Inhibit ale emission Power down mode can be woken-up by int0 / p3.2 pin, int1 / p3.3 pin, t0 / p3.4, t1 / p3.5, rxd / p3.0 pin, Int2 / p4.3, int3 / p4.2 Maximum 39 programmable i / o ports are available Four 8-bit bi-directional ports; extra four-bit additional p4 are available for plcc-44 and lqfp-44 Operating temperature: - 40 ~ + 85c (industrial) / 0~75c (commercial) Type package: Lqfp-44,pdip-40,plcc-44, pqfp44