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CS48520-CQZ Fiches technique(PDF) 9 Page - Cirrus Logic |
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CS48520-CQZ Fiches technique(HTML) 9 Page - Cirrus Logic |
9 / 23 page 9 DS734F5 4.4 Application Code Security 4.3.3 Pads The CS485xx I/Os operate from the 3.3 V supply and are 5 V tolerant. 4.4 Application Code Security The external program code may be encrypted by the programmer to protect any intellectual property it may contain. A secret, customer-specific key is used to encrypt the program code that is to be stored external to the device. Contact your local Cirrus representative for details. 5 Characteristics and Specifications Note: All data sheet minimum and maximum timing parameters are guaranteed over the rated voltage and temperature. All data sheet typical parameters are measured under the following conditions: T = 25° C, CL = 20 pF, VDD = VDDA = 1.8 V, VDDIO = 3.3 V, GNDD = GNDIO = GNDA = 0 V. 5.1 Absolute Maximum Ratings (GNDD = GNDIO = GNDA = 0 V; all voltages with respect to 0 V) WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. 5.2 Recommended Operations Conditions (GNDD = GNDIO = GNDA = 0 V; all voltages with respect to 0 V) Note: It is recommended that the 3.3 V IO supply come up ahead of or simultaneously with the 1.8 V core supply. 5.3 Digital DC Characteristics (Measurements performed under static conditions.) Parameter Symbol Min Max Unit DC power supplies: Core supply VDD –0.3 2.0 V PLL supply VDDA –0.3 3.6 V I/O supply VDDIO –0.3 3.6 V |VDDA–VDDIO| — — 0.3 V Input pin current, any pin except supplies Iin —±10 mA Input voltage on PLL_REF_RES Vfilt –0.3 3.6 V Input voltage on I/O pins Vinio –0.3 5.0 V Storage temperature Tstg –65 150 °C Parameter Symbol Min Typ Max Unit DC power supplies: Core supply VDD 1.71 1.8 1.89 V PLL supply VDDA 3.13 3.3 3.46 V I/O supply VDDIO 3.13 3.3 3.46 V |VDDA–VDDIO| — — 0 — V Ambient operating temperature TA —— — °C –CQZ — 0 — +70 — –DQZ — –40 — +85 — |
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