S-25C256A 2 www.ablic.com SPI SERIAL E PROM www.ablicinc.com ABLIC Inc., 2010-2015 Rev.2.2 03 S 2 The S-25C256A is a SPI serial E PROM which operates at high speed, with low current consumption and the wide range operation. The S-25C256A has the capacity of 256 K-bit and the organization of 32768 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: 10.0 MHz (V = 2.5 V to 5.5 V) CC Write time: 5.0 ms max. SPI mode (0, 0) and (1, 1) Page write: 64 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 6 *1 Endurance: 10 cycles / unit (Ta = 25C) Data retention: 100 years (Ta = 25C) Memory capacity: 256 K-bit Initial delivery state: FFh, SRWD = 0, BP1 = 0, BP0 = 0 Operation temperature range: Ta = 40C to 85C *2 Lead-free (Sn 100%), halogen-free *1. For each unit (unit: the 4 bytes with the same address of A14 to A2) *2. Refer to Product Name Structure for details. Packages 8-Pin SOP (JEDEC) 8-Pin TSSOP 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. 1 2 SPI SERIAL E PROM S-25C256A Rev.2.2 03 S Pin Configurations 1. 8-Pin SOP (JEDEC) 8-Pin SOP (JEDEC) Table 1 Top view Pin No. Symbol Description *1 1 CS Chip select input 1 8 2 SO Serial data output 2 7 *1 3 Write protect input WP 3 6 4 GND Ground *1 5 4 5 SI Serial data input *1 6 SCK Serial clock input *1 7 Figure 1 Hold input HOLD 8 VCC Power supply S-25C256A0I-J8T1U4 *1. Do not use it in high impedance. 2. 8-Pin TSSOP 8-Pin TSSOP Table 2 Top view Pin No. Symbol Description *1 1 1 8 CS Chip select input 2 7 2 SO Serial data output 3 6 *1 3 4 5 Write protect input WP 4 GND Ground *1 Figure 2 5 SI Serial data input *1 6 SCK Serial clock input S-25C256A0I-T8T1U4 *1 7 HOLD Hold input 8 VCC Power supply *1. Do not use it in high impedance. Remark Refer to the Package drawings for the details. 2