256KX8 FLASH 12V PROM, 90ns, PDSO40, 10 X 20 MM, PLASTIC, TSOP-40
| Parameter Name | Attribute value |
| Maker | STMicroelectronics |
| Parts packaging code | TSOP |
| package instruction | 10 X 20 MM, PLASTIC, TSOP-40 |
| Contacts | 40 |
| Reach Compliance Code | unknown |
| ECCN code | EAR99 |
| Maximum access time | 90 ns |
| Other features | 100000 PROGRAM/ERASE CYCLES; BLOCK ERASE; BOTTOM BOOT BLOCK |
| startup block | BOTTOM |
| JESD-30 code | R-PDSO-G40 |
| length | 18.4 mm |
| memory density | 2097152 bit |
| Memory IC Type | FLASH |
| memory width | 8 |
| Number of functions | 1 |
| Number of terminals | 40 |
| word count | 262144 words |
| character code | 256000 |
| Operating mode | ASYNCHRONOUS |
| Maximum operating temperature | 85 °C |
| Minimum operating temperature | -20 °C |
| organize | 256KX8 |
| Package body material | PLASTIC/EPOXY |
| encapsulated code | TSOP1 |
| Package shape | RECTANGULAR |
| Package form | SMALL OUTLINE, THIN PROFILE |
| Parallel/Serial | PARALLEL |
| Programming voltage | 12 V |
| Certification status | Not Qualified |
| Maximum seat height | 1.2 mm |
| Maximum supply voltage (Vsup) | 5.5 V |
| Minimum supply voltage (Vsup) | 4.5 V |
| Nominal supply voltage (Vsup) | 5 V |
| surface mount | YES |
| technology | CMOS |
| Temperature level | OTHER |
| Terminal form | GULL WING |
| Terminal pitch | 0.5 mm |
| Terminal location | DUAL |
| type | NOR TYPE |
| width | 10 mm |
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