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 5.0 MHz (VCC = 2.5 V to 5.5 V) • Write time: 5.0 ms max. • SPI mode (0, 0) and (1, 1) • Page write: 32 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 ) • Endurance: 106cycles / word*1 (Ta = +25°C) • Data retention: 100 years (Ta = +25°C) • Memory capacity: S-25C320A 32 K-bit S-25C640A 64 K-bit • Initial delivery state: FFh, SRWD = 0, BP1 = 0, BP0 = 0 • Operation temperature range: Ta = −40°C to +85°C • Lead-free (Sn 100%), halogen-free*2
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