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32182 Datasheet(PDF) 165 Page - Renesas Technology Corp |
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32182 Datasheet(HTML) 165 Page - Renesas Technology Corp |
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165 / 755 page  6 6-30 INTERNAL MEMORY 32182 Group User’s Manual (Rev.1.0) 6.5.4 Flash Programming Time (Reference) The following shows the time needed to program internal flash memory for reference. (1) Time required for transfer by SIO (for a transfer data size of 384 KB) 1/57,600 bps × 1 (frame) × 11 (number of bits transferred) × 384 KB = approx. 75.1 [s] (2) Time required for programming the flash memory 384 KB / 256-byte block × 8 ms = approx. 12.3 [s] (3) Time required for erasing the entire area 50 ms × 9 (blocks) = approx. 450 [ms] (4) Total flash programming time (entire 384 KB area) When communicating at 57,600 bps via UART, the flash programming time can be ignored because it is very short compared to the serial communication time. Therefore, the total flash programming time can be calcu- lated using the equation below. (1) + (3) = approx. 76 [s] If the transfer time can be ignored by speeding up the serial communication or by other means, the fastest programming time possible can be calculated using the equation below. (2) + (3) = approx. 13 [s] 6.5 Programming the Internal Flash Memory |
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