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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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UPD78P014CW 데이터시트(PDF) 13 Page - Renesas Technology Corp |
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UPD78P014CW 데이터시트(HTML) 13 Page - Renesas Technology Corp |
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13 / 64 page  11 µPD78P014 1. DIFFERENCES BETWEEN µPD78P014 AND MASK ROM VERSION The µPD78P014 incorporates one-time PROM which can be written to once only, or EPROM to which programs can be written, erased and rewritten. By setting the internal memory size switching register, it is possible to make the functions of this device, except for the PROM specification and mask option for pins P60 to P63, identical to those of a mask ROM version. The differences between µPD78P014 and mask ROM versions are shown in Table 1-1. Table 1-1. Differences Between µPD78P014 and Mask ROM Version µPD78P014 IC pin VPP pin Mask option for pins P60 to P63 No Yes No mask option for incorporation of pull- up resistor Yes No Pull-up resistor incorporation possible by means of mask option Item Mask ROM Version Caution In the µPD78P014, the capacity of the internal PROM and internal high-speed RAM can be changed by using the internal memory size switching register. RESET input sets internal PROM to 32K bytes and internal high-speed RAM to 1K bytes. |
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