S-25C256A Datasheet, PDF (1/31 Pages) Seiko Instruments Inc – Write protect function during the low power supply voltage

S-25C256A
www.sii-ic.com
© SII Semiconductor Corporation, 2010-2015
SPI SERIAL E²PROM
Rev.2.2_02_S
The S-25C256A is a SPI serial E²PROM which operates at high speed, with low current consumption and the wide range
operation. The S-25C256A has the capacity of 256 K-bit and the organization of 32768 words × 8-bit. Page write and
sequential read are available.
 Features
• Operating voltage range:
Read 1.6 V to 5.5 V
Write 1.7 V to 5.5 V
• Operation frequency:
• Write time:
• SPI mode (0, 0) and (1, 1)
• Page write:
• Sequential read
• Write protect:
Protect area:
10.0 MHz (VCC = 2.5 V to 5.5 V)
5.0 ms max.
64 bytes / page
Software, Hardware
25%, 50%, 100%
• Monitors write to the memory by a status register
• Function to prevent malfunction by monitoring clock pulse
• Write protect function during the low power supply voltage
• CMOS schmitt input（ CS , SCK, SI, WP , HOLD ）
• Endurance:
• Data retention:
• Memory capacity:
• Initial delivery state:
• Operation temperature range:
• Lead-free (Sn 100%), halogen-free^*2
10⁶cycles / unit ^*1 (Ta = +25°C)
100 years (Ta = +25°C)
256 K-bit
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Ta = −40°C to +85°C
*1. For each unit (unit: the 4 bytes with the same address of A14 to A2)
*2. Refer to “ Product Name Structure” for details.
 Packages
• 8-Pin SOP (JEDEC)
• 8-Pin TSSOP
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.
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