AT25640B-SSHL-T vs AT25320B-SSHL-T Comparison
Detailed side-by-side comparison of AT25640B-SSHL-T by Microchip Technology and AT25320B-SSHL-T by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
AT25640B-SSHL-T - 64Kb SPI EEPROM, 8-SOIC, 20 MHz | Microchip
AT25640B-SSHL-T ✓ ActiveMicrochip Technology
AT25320B-SSHL-T - 32Kbit SPI EEPROM, 20MHz, 8-SOIC | Microchip
AT25320B-SSHL-T ✓ ActiveSpecification Comparison
| Parameter | AT25640B-SSHL-T | AT25320B-SSHL-T |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Memory ICs | EEPROM |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.30 | $0.23 |
| Memory Type | Non-volatile EEPROM (Serial) | Non-volatile EEPROM (Serial) |
| Memory Density | 64 Kbit | 32 Kbit (4,096 x 8-bit) |
| Memory Organization | 8192 x 8 (8 KB) | — |
| Interface | SPI (Serial Peripheral Interface) | SPI (Serial Peripheral Interface) |
| Maximum Clock Frequency | 20 MHz | 20 MHz at 5V |
| Supply Voltage (VCC) | 1.8 V to 5.5 V | — |
| Page Size | 32 bytes | 32 bytes |
| Endurance | 1,000,000 erase/write cycles per page (typical) | — |
| Data Retention | 100 years (typical) | >100 years (typical) |
| Standby Current | 5 µA typical at 5 V | — |
| Active Read Current | [DATA_NEEDED: active read current at 5 V] | — |
| Write Cycle Time | 5 ms typical (page write) | 5 ms (typical, page/byte write) |
| SPI Modes | Mode 0 (0,0) and Mode 3 (1,1) | — |
| Write Protection | Hardware (WP pin) and software (status register) | Hardware (/WP pin) and software block protection (upper 1/4, upper 1/2, full array) |
| Operating Temperature | -40 °C to +85 °C (industrial) | — |
| Package | 8-pin SOIC (SOIC-8, narrow body, 0.150") | 8-SOIC (0.150 inch body, JEDEC SO-8) |
| Mounting Type | Surface Mount | Surface Mount |
| AEC-Q100 | Qualified (AT25640B family) | — |
| RoHS Status | Compliant | Compliant |
| Lead-Free / Halogen-Free | Yes | — |
| MSL Level | 1 (unlimited floor life) | 1 |
| Organization | — | 4,096 words x 8 bits |
| SPI Modes Supported | — | Mode 0 (0,0) and Mode 3 (1,1) |
| Supply Voltage Range | — | 2.5 V to 5.5 V |
| Write Endurance | — | 1,000,000 erase/write cycles (typical) |
| Operating Temperature Range | — | -40C to +85C (industrial, per -SSH suffix) |
| Packaging | — | Tape & Reel (per -T suffix) |