AT25128B/AT25256B
SPI Serial EEPROM 128 Kbits (16,384 x 8)
and 256 Kbits (32,768 x 8)
Features
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1):
– Data sheet describes mode 0 operation
• Low-Voltage Operation:
– 1.8V (VCC = 1.8V to 5.5V)
• Industrial Temperature Range: -40°C to +85°C
• 20 MHz Clock Rate (5V)
• 64‑Byte Page Mode
• Block Write Protection:
– Protect 1/4, 1/2 or entire array
• Write-Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software Data
Protection
• Self-Timed Write Cycle within 5 ms Maximum
• ESD Protection > 4,000V
• High Reliability:
– Endurance: 1,000,000 write cycles
– Data retention: 100 years
• Green (Lead-free/Halide-free/RoHS Compliant) Package Options
• Die Sale Options: Wafer Form and Bumped Wafers
Packages
• 8-Lead SOIC, 8-Lead TSSOP, 8-Pad UDFN and 8-Ball VFBGA
DS20006193A-page 1
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