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P87C550EBAA Datasheet(PDF) 3 Page - NXP Semiconductors |
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P87C550EBAA Datasheet(HTML) 3 Page - NXP Semiconductors |
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3 / 28 page  Philips Semiconductors Product specification 80C550/83C550/87C550 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, 8 channel 8 bit A/D, watchdog timer 1998 May 01 3 BLOCK DIAGRAM PSEN EA/VPP 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 PCON SCON TMOD TCON TH0 TL0 TH1 TL1 SBUF IE IP INTERRUPT, SERIAL PORT AND TIMER BLOCKS P1.0–P1.7 P3.0–P3.7 P0.0–P0.7 P2.0–P2.7 SU00005 |
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