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P89C668 Datasheet(PDF) 3 Page - NXP Semiconductors |
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P89C668 Datasheet(HTML) 3 Page - NXP Semiconductors |
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3 / 54 page  Philips Semiconductors Preliminary data P89C668 80C51 8-bit Flash microcontroller family 64KB ISP Flash with 8KB RAM 2001 Jul 27 3 BLOCK DIAGRAM su01089 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 P.C.A. 8 8 16 I2C SCL SDA |
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