データシートサーチシステム |
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ATmega128 データシート(PDF) 54 Page - ATMEL Corporation |
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ATmega128 データシート(HTML) 54 Page - ATMEL Corporation |
54 / 61 page Troubleshooting Guide 7-2 AVR STK500 User Guide 1925C–AVR–3/03 The AVR device cannot be programmed (continued). Reset disable fuse is set. Check reset disable fuse. Programming too fast Check oscillator settings and make sure it is not set higher than actual clock. External pull-up resistor on reset line too low. Ensure that external pull-up resistor is ≥ 4.7 kΩ. AVR Studio does not detect STK500. Serial cable is not connected, or power is off. Connect serial cable to RS232 PROG and check power connections. PC COM port is in use. Disable other programs that are using PC COM port. Change PC COM port. AVR Studio does not detect COM port. Disable COM port auto- detection in AVR Studio file menu. Force COM port to correct COM port. STK500 cannot be switched off. Positive center power connector is used. Use negative center power connector. Turn off STK500 by removing power connector. The status LED is blinking slowly There is a short circuit on AREF Resolve the short circuit. The status LED is blinking quickly. There is a short circuit on VTARGET. Resolve the short circuit. An external VTARGET is being used and has been turned off. Set VTARGET to a value below 0.3V in AVR Studio. The LEDs don’t work (running from external VTARGET). STK500 must be powered for LEDs to work. Supply poser to STK500 and turn it on. Table 7-1. Troubleshooting Guide (Continued) Problem Reason Solution |
同様の部品番号 - ATmega128 |
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同様の説明 - ATmega128 |
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