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