S-25C320A Datasheet, PDF (1/39 Pages) Seiko Instruments Inc – Write protect function during the low power supply voltage

S-25C320A/640A
www.sii-ic.com
© SII Semiconductor Corporation, 2009-2015
SPI SERIAL E²PROM
Rev.4.2_02_H
The S-25C320A/640A is a SPI serial E²PROM which operates at high speed, with low current consumption and the wide
range operation. The S-25C320A/640A has the capacity of 32 K-bit and 64 K-bit, and the organization is 4096 words × 8-bit,
8192 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:
5.0 MHz (VCC = 2.5 V to 5.5 V)
5.0 ms max.
32 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:
10⁶cycles / word^*1 (Ta = +25°C)
100 years (Ta = +25°C)
S-25C320A
32 K-bit
S-25C640A
64 K-bit
• Initial delivery state:
• Operation temperature range:
• Lead-free (Sn 100%), halogen-free^*2
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Ta = −40°C to +85°C
*1. For each address (Word: 8-bit)
*2. Refer to “ Product Name Structure” for details.
 Packages
• 8-Pin SOP (JEDEC)
• 8-Pin TSSOP
• TMSOP-8
• SNT-8A
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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