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ADE5166 数据表(PDF) 29 Page - Analog Devices |
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ADE5166 数据表(HTML) 29 Page - Analog Devices |
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29 / 156 page  ADE5166/ADE5169/ADE5566/ADE5569 Rev. B | Page 29 of 156 Table 22. Scratch Pad 1 SFR (SCRATCH1, Address 0xFB) Bit Mnemonic Default Description [7:0] SCRATCH1 0 Value can be written/read in this register. This value is maintained in all the power saving modes. Table 23. Scratch Pad 2 SFR (SCRATCH2, Address 0xFC) Bit Mnemonic Default Description [7:0] SCRATCH2 0 Value can be written/read in this register. This value is maintained in all the power saving modes. Table 24. Scratch Pad 3 SFR (SCRATCH3, Address 0xFD) Bit Mnemonic Default Description [7:0] SCRATCH3 0 Value can be written/read in this register. This value is maintained in all the power saving modes. Table 25. Scratch Pad 4 SFR (SCRATCH4, Address 0xFE) Bit Mnemonic Default Description [7:0] SCRATCH4 0 Value can be written/read in this register. This value is maintained in all the power saving modes. Clearing the Scratch Pad Registers (SCRATCH1, Address 0xFB to SCRATCH4, Address 0xFE) Note that these scratch pad registers are cleared only when the part loses VDD and VBAT. Table 26. Power Control SFR (POWCON, Address 0xC5) Bit Mnemonic Default Description 7 Reserved 1 Reserved. 6 METER_OFF 0 Set this bit to turn off the modulators and energy metering DSP circuitry to reduce power if metering functions are not needed in PSM0 mode. 5 Reserved 0 This bit should be kept at 0 for proper operation. 4 COREOFF 0 Set this bit to shut down the core and enter PSM2 mode if in the PSM1 operating mode. 3 Reserved 0 Reserved. [2:0] CD 010 Controls the core clock frequency, fCORE. fCORE = 4.096 MHz/2CD. CD Result (fCORE in MHz) 000 4.096 001 2.048 010 1.024 011 0.512 100 0.256 101 0.128 110 0.064 111 0.032 Writing to the Power Control SFR (POWCON, Address 0xC5) Writing data to the power control SFR (POWCON, Address 0xC5) involves writing 0xA7 into the key SFR (KYREG, Address 0xC1), which is described in Table 126, followed by a write to the POWCON SFR. For example, MOV KYREG,#0A7h ;Write KYREG to 0xA7 to get write access to the POWCON SFR MOV POWCON,#10h ;Shut down the core |
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