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MB89865PF Datasheet(PDF) 7 Page - Fujitsu Component Limited. |
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MB89865PF Datasheet(HTML) 7 Page - Fujitsu Component Limited. |
7 / 51 page 7 MB89860/850 Series s PIN DESCRIPTION (Continued) *1: DIP-64P-M01, DIP-64C-A06 *2: FPT-80P-M06, FPT-80C-A02 Pin no. Pin name Circuit type Function SH-DIP*1 QFP*2 30 13 X0 A Crystal oscillator pins (10 MHz) 31 14 X1 28 11 MOD0 B Operating mode selection pins Connect directly to VCC or VSS. 29 12 MOD1 27 16 RST C Reset I/O pin This pin is an N-ch open-drain output type with a pull-up resistor, and a hysteresis input type. “L” is output from this pin by an internal reset source. The internal circuit is initialized by the input of “L”. 56 to 49 40 to 33 P00 /AD0 to P07/AD7 D General-purpose I/O ports When an external bus is used, these ports function as multiplex pins of lower address output and data I/O. 48 to 41 32 to 25 P10 /A08 to P17/A15 D General-purpose I/O ports When an external bus is used, these ports function as upper address output. 40 24 P20/BUFC F General-purpose output port When an external bus is used, this port can also be used as a buffer control output. 39 23 P21/HAK F General-purpose output port When an external bus is used, this port can also be used as a hold acknowledge output. 38 22 P22/HRQ D General-purpose output port When an external bus is used, this port can also be used as a hold request input. 37 21 P23/RDY D General-purpose output port When an external bus is used, this port functions as a ready input. 36 20 P24/CLK F General-purpose output port When an external bus is used, this port functions as a clock output. 35 19 P25/WR F General-purpose output port When an external bus is used, this port functions as a write signal output. 34 18 P26/RD F General-purpose output port When an external bus is used, this port functions as a read signal output. 33 17 P27/ALE F General-purpose output port When an external bus is used, this port functions as an address latch signal output. 2 48 P30/SCK1 E General-purpose I/O port Also serves as the clock I/O for the UART. This port is a hysteresis input type. |
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