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71M6515H Datasheet(PDF) 38 Page - Teridian Semiconductor Corporation |
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71M6515H Datasheet(HTML) 38 Page - Teridian Semiconductor Corporation |
38 / 60 page 71M6515H Energy Meter IC DATA SHEET JULY 2011 Page: 38 of 60 © 2005 −2011 Teridian Semiconductor Corporation 1.6 A Maxim Integrated Products Brand Bits 13-8: These six bits (SUM_CYCLES) define the length of the accumulation interval τ per the formula: 6 . 2520 42 _ ⋅ = CYCLES SUM τ Allowed values are 24 (400ms) through 60 (1000ms), unless the post-processor is disabled. Bit 8 is the LSB. It is important to note that the length of the accumulation interval, as determined by SUM_CYCLES, is not an exact multiple of 1000ms. For example, if SUM_CYCLES = 60, the resulting accumulation interval is: ms Hz Hz 75 . 999 62 . 2520 2520 13 32768 42 60 = = ⋅ = τ This means that accurate time measurements should be based on the RTC, not the accumulation interval. Bit 14: This bit (CKOUT_DISB) disables the CKOUT pin when set. The CKOUT pin can be used for diagnostics. For EMC compliance and power saving reasons, CKOUT_DISB should always be set. Bit 15: This bit (ADC_DIS) disables the ADC when set, e.g. to save power. Of course, no metering or measuring can be performed with the ADC disabled. Bits 18-16: These three bits (TMUX) select the source for the TMUX diagnostic output pin. For EMC compliance and power saving reasons, TMUX should be zero (default) if unused. Bit 18 TMUX2 Bit 17 TMUX1 Bit 16 TMUX0 TMUX Signal Selected for the TMUX Pin 0 0 0 0 GND 0 0 1 1 MUX_SYNC 0 1 0 2 RTM 0 1 1 3 RTC Output 1 0 0 4 CE_BUSY 1 0 1 5 XFER_BUSY 1 1 0 6 VX_OK (Comparator Output) 1 1 1 7 V3P3/2 =1.5V internal analog voltage |
Similar Part No. - 71M6515H_11 |
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Similar Description - 71M6515H_11 |
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