SPI Serial EEPROM S-25C512A (512K-bit)

DatasheetJan. 05, 2018


Please contact each Web shop for details such as availability of online samples.


The S-25C512A is a SPI serial EEPROM which operates at high speed, with low current consumption and the wide range operation. The S-25C512A has the capacity of 512 K-bit and the organization of 65536 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
Operation frequency
10.0 MHz (Vcc =2.5 V to 5.5 V)
Write time
5.0 ms Max.
SPI mode (0, 0) and (1, 1)
Page Write
128 bytes / page
Sequential read
Write protect
Software, Hardware
Protect area: 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 / unit*1 (Ta = +25°C)
Data retention
100 years (Ta = +25°C)
Memory capacity
512 K-bit
Initial shipment data
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Lead-free (Sn 100%), halogen-free*2

*1. For each unit (unit: the 4 bytes with the same address of A15 to A2)
*2. Refer to “Product Name Structure” of the data sheet for details.