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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HD404324FS датащи(PDF) 83 Page - Renesas Technology Corp |
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HD404324FS датащи(HTML) 83 Page - Renesas Technology Corp |
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83 / 103 page  HD404054 Series/HD404094 Series 81 Warnings 1. Always specify addresses $0000 to $1FFF when programming with a PROM programmer. If address $2000 or higher is accessed, the PROM may not be programmed or verified correctly. Set all data in unused addresses to $FF. Note that the plastic-package version cannot be erased or reprogrammed. 2. Make sure that the PROM programmer, socket adapter, and LSI are aligned correctly (their pin 1 positions match), otherwise overcurrents may damage the LSI. Before starting programming, make sure that the LSI is firmly fixed in the socket adapter and the socket adapter is firmly fixed onto the programmer. 3. PROM programmers have two voltages (V PP): 12.5 V and 21 V. Remember that ZTAT™ devices require a V PP of 12.5 V—the 21-V setting will damage them. 12.5 V is the Intel 27256 setting. Programming and Verification The built-in PROM of the MCU can be programmed at high speed without risk of voltage stress or damage to data reliability. Programming and verification modes are selected as listed in table 28. Table 28 PROM Mode Selection Pin Mode CE OE V PP O 0–O7 Programming Low High V PP Data input Verification High Low V PP Data output Programming inhibited High High V PP High impedance |
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