S-34C02B Datasheet, PDF (1/26 Pages) Seiko Instruments Inc – Write protect function during low power supply voltage

www.sii-ic.com
© SII Semiconductor Corporation, 2012-2013
S-34C02B
2-WIRE SERIAL E²PROM
FOR DIMM SERIAL PRESENCE DETECT
Rev.1.0_02_U
This IC is a 2-wire serial E²PROM for DIMM Serial Presence Detect which operates with low current consumption and the
wide range operation. This IC has the capacity of 2 K-bit and the organization of 256 words × 8-bit. Page write and
sequential read are available.
This IC has hardware write protect and software write protect. Hardware write protect inhibits write to all memory area when
connecting the WP pin to VCC. Software write protect inhibits write in 50% of the lower address (address 00h to 7Fh) in all
memory area by inputting command when the WP pin is left open or connected to the GND pin.
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, contact to SII Semiconductor
Corporation is indispensable.
 Features
• Operation voltage range
Read:
1.7 V to 5.5 V
Write:
1.7 V to 5.5 V
• Operation frequency:
400 kHz max. (VCC = 1.7 V to 5.5 V)
• Write time: 5.0 ms max.
• Page write: 16 bytes / page
• Sequential read
• Noise suppression:
Schmitt trigger and noise filter on input pins (SCL, SDA)
• Write protect function during low power supply voltage
• Endurance: 10⁶ cycle / word^*1 (Ta = +25°C)
• Data retention: 100 years (Ta = +25°C)
• Memory capacity:
2 K-bit
• Initial delivery state:
FFh
• Operation temperature range: Ta = −40°C to +85°C
• Write protect:
Hardware protect 100%
(addresses 00h to FFh)
Software protect for the lower address of 50%
(addresses 00h to 7Fh)
• Lead-free (Sn 100%), halogen-free
*1. For each address (Word: 8-bit)
 Package
• DFN-8(2030)
5
8
4
1
1