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UPD70320L-8 Datasheet(PDF) 7 Page - NEC |
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UPD70320L-8 Datasheet(HTML) 7 Page - NEC |
7 / 74 page 7 µPD70320 1. PIN FUNCTIONS 1.1 Port Pins Pin Name Input/Output Port Function Control Function P00 to P06 Input & output 8-bit input/output ports, each to — P07/CLKOUT Input & output/output be specified bit-by-bit System clock output P10/NMI Input Used as non-maskable interrupt — request input (input port) P11/INTP0 Used as both external interrupt P12/INTP1 request input and input port P13/INTP2/INTAK Input/input/output INT acknowledge signal output P14/POLL/INT Input & output/input/input Used as both specifiable input/ External interrupt request input output port and POLL input P15/ TOUT Input & output/output Input/output port specifiable Timer output P16/SCK0 bit-by-bit Serial clock output P17/READY Input & output/input READY input P20/DMARQ0 Input & output/input 8-bit input/output port specifiable DMA request input (CH0) P21/DMAAK0 Input & output/output bit-by-bit DMA acknowledge output (CH0) P22/TC0 DMA end output (CH0) P23/DMARQ1 Input & output/input DMA request input (CH1) P24/DMAAK1 Input & output/output DMA acknowledge output (CH1) P25/TC1 DMA end output (CH1) P26/HLDAK Input & output/output HOLD acknowledge output P27/HLDRQ Input & output/input HOLD input PT0 to PT7 Input 8-bit input port with comparator — Remark All port pins become input ports after reset is released. When using P13/INTP2/INTAK as a INTAK pin, be sure to pull up the pin to avoid a malfunction of external interrupt controller after reset is released. |
Similar Part No. - UPD70320L-8 |
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Similar Description - UPD70320L-8 |
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