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P80C31 Datasheet(PDF) 4 Page - NXP Semiconductors |
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P80C31 Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 38 page Philips Semiconductors Product specification 80C51/87C51/80C31 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, low voltage (2.7V–5.5V), low power, high speed (33 MHz) 2000 Jan 20 4 BLOCK DIAGRAM SU00845 PSEN EAVPP ALE/PROG RST XTAL1 XTAL2 VCC VSS PORT 0 DRIVERS PORT 2 DRIVERS RAM ADDR REGISTER RAM PORT 0 LATCH PORT 2 LATCH ROM/EPROM REGISTER B ACC STACK POINTER TMP2 TMP1 ALU TIMING AND CONTROL PD OSCILLATOR PSW PORT 1 LATCH PORT 3 LATCH PORT 1 DRIVERS PORT 3 DRIVERS PROGRAM ADDRESS REGISTER BUFFER PC INCRE- MENTER PROGRAM COUNTER DPTR’S MULTIPLE P1.0–P1.7 P3.0–P3.7 P0.0–P0.7 P2.0–P2.7 SFRs TIMERS 8 8 16 |
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