| Mfr. Part # | AT28HC256E-70TU | AT28BV256-20TU | AT28C256-15TU |
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology |
| Description | IC EEPROM 256K PARALLEL 28TSOP | IC EEPROM 256K PARALLEL 28TSOP | IC EEPROM 256K PARALLEL 28TSOP |
| Datasheet | |||
| RoHS | |||
| Specifications | |||
Mounting Type | Surface Mount | Surface Mount | Surface Mount |
Package / Case | 28-TSSOP (0.465, 11.80mm Width) | 28-TSSOP (0.465, 11.80mm Width) | 28-TSSOP (0.465, 11.80mm Width) |
Surface Mount | YES | - | - |
Memory Types | Non-Volatile | Non-Volatile | Non-Volatile |
Operating Temperature | -40°C~85°C TC | -40°C~85°C TC | -40°C~85°C TC |
Packaging | Tray | Tray | Tray |
Published | 1997 | 1997 | 1997 |
Part Status | Discontinued | Active | Active |
Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) | 3 (168 Hours) |
Number of Terminations | 28 | 28 | 28 |
ECCN Code | EAR99 | - | - |
HTS Code | 8542.32.00.51 | - | - |
Voltage - Supply | 5V | 3.3V | 5V |
Terminal Position | DUAL | DUAL | DUAL |
Number of Functions | 1 | 1 | 1 |
Terminal Pitch | 0.55mm | 0.55mm | 0.55mm |
Base Part Number | AT28HC256 | AT28BV256 | AT28C256 |
JESD-30 Code | R-PDSO-G28 | - | - |
Qualification Status | Not Qualified | - | Not Qualified |
Power Supplies | 5V | - | 5V |
Memory Size | 256Kb 32K x 8 | 256Kb 32K x 8 | 256Kb 32K x 8 |
Operating Mode | ASYNCHRONOUS | - | ASYNCHRONOUS |
Access Time | 70ns | 200ns | 150ns |
Memory Format | EEPROM | EEPROM | EEPROM |
Memory Interface | Parallel | Parallel | Parallel |
Organization | 32KX8 | 32KX8 | 32KX8 |
Memory Width | 8 | 8 | 8 |
Write Cycle Time - Word, Page | 10ms | 10ms | 10ms |
Memory Density | 262144 bit | - | - |
Programming Voltage | 5V | 3V | 5V |
Endurance | 100000 Write/Erase Cycles | 10000 Write/Erase Cycles | 10000 Write/Erase Cycles |
Write Cycle Time-Max (tWC) | 10ms | 10ms | 10ms |
Data Polling | YES | YES | YES |
Toggle Bit | YES | YES | YES |
Voltage - Supply (Max) | 5.5V | 3.6V | - |
Voltage - Supply (Min) | 4.5V | 2.7V | - |
Command User Interface | NO | - | - |
Page Size | 64words | 64words | 64words |
Length | 11.8mm | 11.8mm | 11.8mm |
Height Seated (Max) | 1.2mm | 1.2mm | 1.2mm |
Width | 8mm | 8mm | 8mm |
RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Factory Lead Time | - | 15 Weeks | 15 Weeks |
Contact Plating | - | Tin | Tin |
Mount | - | Surface Mount | Surface Mount |
Number of Pins | - | 28 | 28 |
Current - Supply (Nom) | - | 15mA | 50mA |
JESD-609 Code | - | e3 | e3 |
Pbfree Code | - | yes | yes |
Frequency | - | 5MHz | 150GHz |
Interface | - | Parallel, SPI | Parallel, SPI |
Density | - | 256 kb | 256 kb |
Standby Current-Max | - | 0.00005A | 0.0002A |
REACH SVHC | - | No SVHC | - |
Radiation Hardening | - | No | - |
Lead Free | - | Lead Free | Lead Free |
Peak Reflow Temperature (Cel) | - | - | NOT SPECIFIED |
Time@Peak Reflow Temperature-Max (s) | - | - | NOT SPECIFIED |
| Pricing(USD) | |||
| Grads Price | Quantity Unit Price 1+ $142.6667 10+ $134.5912 100+ $126.9728 500+ $119.7857 1000+ $113.0054 | Quantity Unit Price 1+ $132.58 10+ $125.0755 100+ $117.9957 500+ $111.3167 1000+ $105.0158 | Quantity Unit Price 1+ $72.277 10+ $68.1859 100+ $64.3263 500+ $60.6852 1000+ $57.2502 |
| Availability | 12 | 41 | 340 |
| Price | $142.6667 | $132.58 | $72.277 |
| Quantity |
In Stock : 12