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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AS3435 Datenblatt(PDF) 53 Page - ams AG |
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AS3435 Datenblatt(HTML) 53 Page - ams AG |
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53 / 102 page  ams Datasheet, Confidential: 2014-Jun-13 [v1-30] AS3415/AS3435 – 53 Detaile d Desc rip t ion The principle for writing to a register is basically the same. The only difference is the configuration of the OTP_MODE register, shown in Figure 67. The first step is to enable the OTP_MODE register by setting the EVAL_REG_ON register to ‘1’. The next step is to configure the OTP_MODE register to ‘10’ in order to select OTP write access. Now you can start writing to any OTP register inside the AS3415/35. Figure 67: OTP Write Access Flow Chart OTP Write Access Flow Chart: This flow chart shows how to successfully write to an OTP register via the I²C or production trimming interface. If you want to read out the OTP fuse content the OTP load function is necessary. In order to load the OTP fuse content to the OTP registers, a special sequence is necessary, as shown in Figure 68. Figure 68: OTP Load Access Flow Chart OTP Load Access Flow Chart: This flow chart shows how to successfully load the OTP fuse content back to the OTP register via the I²C or production trimming interface. Set bit EVAL_REG_ON in register 0x20 Set OTP_MODE register to ‘10‘b Write to desired OTP register Set bit EVAL_REG_ON in register 0x20 Set OTP_MODE register to ‘01‘b Dummy read from Register 0x30 Wait 15ms Dummy read from Register 0x34 Wait 15ms Dummy read from Register 0x10 Wait 15ms Dummy read from Register 0x14 OTP registers are succeffully loaded with OTP Fuses content |
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