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P89C51BN Datasheet(PDF) 5 Page - NXP Semiconductors |
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P89C51BN Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 39 page Philips Semiconductors Product data 89C51/89C52/89C54/89C58 80C51 8-bit microcontroller family 4K/8K/16K/32K Flash 2002 Jan 15 5 BLOCK DIAGRAM 2 (CPU ORIENTED) SU01066 PSEN EAVPP ALE RST XTAL1 XTAL2 VCC VSS PORT 0 DRIVERS PORT 2 DRIVERS RAM ADDR REGISTER RAM PORT 0 LATCH PORT 2 LATCH FLASH 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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