Datasheet > DS2478

DS2478

更新时间： 2023-12-20 18:45:41

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亚德诺 - ADI		/
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DeepCover汽车安全协处理器

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DS2478 数据手册

DS2478

DeepCover Automotive Secure Coprocessor

Electrical Characteristics (continued)

(Limits are 100% tested at T = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed

by design and characterization. Specifications marked GBD are guaranteed by design and not production tested. Specifications to the

minimum and maximum operating temperature are guaranteed by design and are not production tested.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Computation Time

(HMAC)

CMP

Generate ECC Key Pair

500

GKP

GES

Generate ECDSA

Signature

Verify ECDSA Signature

or Compute ECDH Time

160

VES

TRNG Generation

RNG

ODC

TRNG On-Demand

Check

OTP

OTP Write Temperature

Data Retention

°C

OPTW

= +125°C (Note 12)

years

Note 1: System requirement.

Note 2: OTP programming current production tested at +25°C.

Note 3: All I C timing values are referred to V

and V

levels.

IL(MAX)

IH(MIN)

Note 4: Guaranteed by design and/or characterization only. Not production tested.

Note 5: The I-V characteristic is linear for voltages less than 1V.

Note 6: I/O pins of the DS2478 do not obstruct the SDA and SCL lines if V

is switched off.

Note 7: t

min = t

max + 200ns for rise or fall time + t

accordingly.

min. Values greater than these can be accommodated by

SU:DAT

LOW

HD:DAT

extending t

LOW

Note 8: The DS2478 provides a hold time of at least 100ns for the SDA signal (referenced to the V

of the SCL signal) to bridge

IH(MIN)

the undefined region of the falling edge of SCL.

Note 9: The DS2478 can be used in a standard-mode I C-bus system, but the requirement t

≥ 250ns must then be met. Also,

SU:DAT

the acknowledge timing must meet this setup time (I C Bus Specification Rev. 03, 19 June 2007).

Note 10: C = Total capacitance of one bus line in pF. The maximum bus capacitance allowable may vary from this value depending

on the actual operating voltage and frequency of the application (I C Bus Specification Rev. 03, 19 June 2007).

Note 11: I C communication should not take place for the max t

Note 12: Data retention is tested in compliance with JESD47G.

time following a power-on reset.

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