Built-in ARP Function 2-wire Serial EEPROM with Temperature Sensor S-585AA

This IC is a 2-wire serial E2PROM with temperature sensor built in Address Resolution Protocol (ARP) function which operates in 1.7 V to 3.6 V voltage ranges. This IC has the capacity of 4 K-bit and the organization of 2 pages × 256-word × 8-bit. Page write and sequential read are available.
This IC operates with the SMBus and I2C-Bus at 1.0 MHz maximum.
A substantial reduction in current consumption may be achieved by using shutdown mode which can be set by the I2C-Bus.
In addition, the SMBus ARP function is supported; therefore, this IC is optimal for SSDs that communicate over the SMBus.

Caution:  This product is intended to use in general electronic devices such as consumer electronics, office equipment, and communications devices. Before using the product in medical equipment or automobile equipment including car audio, keyless entry and engine control unit, it is imperative to contact our sales representatives.


E2PROM block

Page write
16 bytes / page
Sequential read
Write protect function during low power supply voltage
Write protect
Individual software data protection for each of four 128-byte blocks
106 cycle / word*1 (Ta = +25°C)
Data retention
100 years (Ta = +25°C)
Memory capacity
4 K-bit
Initial delivery state

Temperature sensor block

Temperature accuracy
±0.25°C typ. / ±1.0°C max. (Ta = 0°C to +85°C)
±0.25°C typ. / ±1.5°C max. (Ta = −40°C to +125°C)
Temperature sample rate
8 samples / s min.
Selectable hysteresis width
No hysteresis, 1.5°C, 3.0°C, 6.0°C


Support for SMBus ARP function
Support for Alert Response Address function (ARA)
Support for Default Slave Address (DSA)
Current consumption
E2PROM in standby mode and temperature sensor in shutdown mode: 3.0 μA max.
E2PROM in standby mode and temperature sensor in active mode: 0.1 mA max.
E2PROM in read operation mode and temperature sensor in active mode: 0.4 mA max.
E2PROM in write operation mode and temperature sensor in active mode: 2.0 mA max.
Operation voltage range
1.7 V to 3.6 V
Operation frequency
1.0 MHz max. (VDD = 2.2 V to 3.6 V)
400 kHz max. (VDD = 1.7 V to 3.6 V)
Noise suppression
Schmitt trigger and noise filter on input pins (SCL, SDA)
Operation temperature range
Ta = -40°C to +125°C
Lead-free (Sn 100%), halogen-free

*1. For each address (Word: 8-bit)

Parts List

  • U(Ux), S and G at the end of the product name of ABLIC Inc. were used to indicate different material specifications as “environmental code”,
    however, these have now been unified into “lead-free and halogen-free” and are identical in terms of environmental quality.
  • Note: Lead-free plating other than 100% Sn is applied to some limited old products, therefore, please contact our sales representatives for details.
  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.