© ABLIC Inc., 2009-2015
SPI SERIAL E2PROM
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.
Operating voltage range:
Read 1.6 V to 5.5 V
Write 1.7 V to 5.5 V
SPI mode (0, 0) and (1, 1)
5.0 MHz (VCC = 2.5 V to 5.5 V)
5.0 ms max.
32 bytes / page
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 )
106cycles / word*1 (Ta = 25°C)
100 years (Ta = 25°C)
Initial delivery state:
Operation temperature range:
Lead-free (Sn 100%), halogen-free*2
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Ta = 40°C to 85C
*1. For each address (Word: 8-bit)
*2. Refer to “ Product Name Structure” for details.
8-Pin SOP (JEDEC)
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
ABLIC Inc. is indispensable.