Datasheet > DS2476

DS2476

更新时间： 2023-12-20 18:46:04

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亚德诺 - ADI		/
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10页	339K
描述
DeepCover安全协处理器

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DS2476 数据手册

ABRIDGED DATA SHEET

DS2476

DeepCover Secure Coprocessor

Electrical Characteristics (continued)

(T = -40°C to +85°C.) (Note 1)

Note 1: Limits are 100% production tested at T = +25°C and/or T = +85°C. Limits over the operating temperature range and

relevant supply voltage range are guaranteed by design and characterization. Typical values at +25°C.

Note 2: Operating current continuously reading memory at 400kHz with < 25ns rise and fall times on SDA and SCL.

Note 3: Average current drawn from V during EEPROM read, EEPROM write, RNG calculation, SHA-256 calculation, or ECDSA calculation.

Note 4: Write-cycle endurance is tested in compliance with JESD47H.

Note 5: Data retention is rested in compliance with JESD47H.

Note 6: All I C timing values are referred to V

and V

levels.

IH(MIN)

IL(MAX)

Note 7: Guaranteed by design and/or characterization only. Not production tested.

Note 8: I/O pins of the DS2476B do not obstruct the SDA and SCL lines if V

Note 9: System requirement.

is switched off.

Note 10: t

min = t

max + t

min, where t

is rise or fall time. For the DS2476, t

max = 300ns;

LOW

HD:DAT

EDGE

SU:DAT

EDGE

for the DS2476B, t

max = 200ns. Values greater than these can be accommodated by extending t

accordingly.

EDGE

LOW

Note 11: The DS2476 provides a hold time of at least 100ns for the SDA signal (referred to the V

of the SCL signal) to bridge

IH(MIN)

the undefined region of the falling edge of SCL. The master can provide a hold time of 0ns when writing to the device.

Note 12: The DS2476 can be used in a standard-mode I C bus system, but the requirement t

≥ 250ns must then be met (I C

SU:DAT

bus specification Rev. 03, 19 June 2007).

Note 13: C = total capacitance of one bus line in pF. The maximum bus capacitance allowable can 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 14: I C communication should not take place for max t

time following a power-on reset.

OSCWUP

Maxim Integrated

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www.maximintegrated.com

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