AT88SC018-SU-CN-T Atmel, AT88SC018-SU-CN-T Datasheet - Page 3

• Manufacturer Part Number: AT88SC018-SU-CN-T
• Description: IC CRYPTOCOMPANION RF/MEM 8SOIC
• Manufacturer: Atmel

Specifications of AT88SC018-SU-CN-T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.3.
5277DS–CryptoCompanion–9/09
Package, Pin Definition & IO
1.3.1.
1.3.1.1. V
Power supply is 2.7 – 3.6V. Supply current less than 5 mA.
CryptoCompanion will be available to accept commands 60 ms after the later of V
driven high if CryptoCompanion is in a security delay then this interval is significantly longer.
During Power Up, V
level. During Power Down, V
below the 2.5V boundary. CryptoCompanion does not support hot swapping or hot plugging.
V
recommends two capacitors connected in parallel having a value of 1μF and 0.01μF. The capacitors should be
manufactured using X5R or X7R dielectric material. These capacitors should be connected to CryptoCompanion using
a total of no more than 1cm PC board traces. Atmel recommends the use of a ground plane and a trace length of less
than 0.5cm between the capacitors and the V
operation.
1.3.1.2. SDA
Two wire interface data pin, 5 V compatible. Minimum data setup time = 0.1 μs, and minimum data hold time = 0 μs min.
The system board must include an external pull-up resistor.
1.3.1.3. SCL
Two wire interface clock pin, 5 V compatible. Maximum SCL rate is 400KHz, minimum T
T
1.3.1.4. Reset (RST)
This active low input will reset all states within CryptoCompanion. Honored regardless of the state of PowerDown.
1.3.1.5. PowerDown (PDN)
When held low, the part operates normally. When held high the part will go to sleep and ignore all transitions on SDA
and SCL, power consumption will drop to less than 10 μA. There is a 50 ms delay between this pin falling and the first
transition on SDA or SCL that will be accepted by the chip.
HIGH
CC
must be bypassed with high quality surface mount capacitors that are properly located on the board. Atmel
= 0.6 μs. The system board must include an external pull-up resistor.
Pin Definition
CC
, Gnd
CC
must exhibit a monotonic ramp at a minimum rate of 50 mV/mS until V
CC
must exhibit a monotonic ramp at a minimum rate of 50 mV/mS once it has dropped
CC
pin. Failure to follow these recommendations may result in improper
CryptoCompanion™ Chip
CC
rising above 2.7V or Reset being
CC
LOW
has crossed the 2.7V
= 1.2 μs, minimum
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