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P87C51MB2BA Datasheet(PDF) 5 Page - NXP Semiconductors |
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P87C51MB2BA Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 34 page 2001 Apr 06 5 Philips Semiconductors Preliminary specification P87C51MB2/P87C51MC2 80C51 8-bit microcontroller family with extended memory 64KB/96KB OTP with 2KB/3KB RAM PIN CONFIGURATION 1. Pins 1, 12, 23, 34 were not internally connected in some derivatives. Please refer to section on Pin Descriptions for details. PLCC44 7 17 39 29 18 28 6 40 PLASTIC LEADED CHIP CARRIER 1 Pin Function 1 (NC/VSS) 1 2 P1.0/T2 3 P1.1/T2EX 4 P1.2/ECI 5 P1.3/CEX0 6 P1.4/CEX1/MOSI 7 P1.5/CEX2/SPICLK 8 P1.6/CEX3 9 P1.7/CEX4 10 RST 11 P3.0/RXD0 12 P4.0/RXD1/MISO1 13 P3.1/TXD0 14 P3.2/INT0 15 P3.3/INT1 16 P3.4/T0 17 P3.5/T1 18 P3.6/WR 19 P3.7/RD 20 XTAL2 21 XTAL1 22 VSS Pin Function 23 (NC/VDD) 1 24 P2.0/A8/A16 25 P2.1/A9/A17 26 P2.2/A10/A18 27 P2.3/A11/A19 28 P2.4/A12/A20 29 P2.5/A13/A21 30 P2.6/A14/A22 31 P2.7/A15 32 PSEN 33 ALE 34 P4.1/TXD1/SS1 35 EA/Vpp 36 P0.7/AD7 37 P0.6/AD6 38 P0.5/AD5 39 P0.4/AD4 40 P0.3/AD3 41 P0.2/AD2 42 P0.1/AD1 43 P0.0/AD0 44 VDD |
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