256k X 8 cmos flash memory
| Parameter Name | Attribute value |
| Is it Rohs certified? | incompatible |
| Maker | Winbond Electronics Corporation |
| Parts packaging code | DIP |
| package instruction | DIP, DIP32,.6 |
| Contacts | 32 |
| Reach Compliance Code | unknow |
| ECCN code | EAR99 |
| Maximum access time | 90 ns |
| Other features | HARDWARE AND SOFTWARE DATA PROTECTION; 20-YEARS DATA RETENTION |
| startup block | BOTTOM/TOP |
| command user interface | NO |
| Data polling | YES |
| Data retention time - minimum | 20 |
| Durability | 10000 Write/Erase Cycles |
| JESD-30 code | R-PDIP-T32 |
| JESD-609 code | e0 |
| length | 41.91 mm |
| memory density | 2097152 bi |
| Memory IC Type | FLASH |
| memory width | 8 |
| Number of functions | 1 |
| Number of departments/size | 1,1,1 |
| Number of terminals | 32 |
| word count | 262144 words |
| character code | 256000 |
| Operating mode | ASYNCHRONOUS |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | |
| organize | 256KX8 |
| Package body material | PLASTIC/EPOXY |
| encapsulated code | DIP |
| Encapsulate equivalent code | DIP32,.6 |
| Package shape | RECTANGULAR |
| Package form | IN-LINE |
| Parallel/Serial | PARALLEL |
| Peak Reflow Temperature (Celsius) | NOT SPECIFIED |
| power supply | 5 V |
| Programming voltage | 5 V |
| Certification status | Not Qualified |
| Maximum seat height | 5.33 mm |
| Department size | 8K,240K,8K |
| Maximum standby current | 0.0001 A |
| Maximum slew rate | 0.05 mA |
| Maximum supply voltage (Vsup) | 5.5 V |
| Minimum supply voltage (Vsup) | 4.5 V |
| Nominal supply voltage (Vsup) | 5 V |
| surface mount | NO |
| technology | CMOS |
| Temperature level | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE |
| Terminal pitch | 2.54 mm |
| Terminal location | DUAL |
| Maximum time at peak reflow temperature | NOT SPECIFIED |
| switch bit | YES |
| type | NOR TYPE |
| width | 15.24 mm |
| Maximum write cycle time (tWC) | 10 ms |
| W29C020C-90B | W29C020C-70B | W29C020C-70 | W29C020C-12B | W29C020C-12 | W29C020CT90B | |
|---|---|---|---|---|---|---|
| Description | 256k X 8 cmos flash memory | 256k X 8 cmos flash memory | 256k X 8 cmos flash memory | 256k X 8 cmos flash memory | 256k X 8 cmos flash memory | 256k X 8 cmos flash memory |
| Is it Rohs certified? | incompatible | incompatible | - | incompatible | incompatible | incompatible |
| Parts packaging code | DIP | DIP | - | DIP | DIP | TSOP1 |
| package instruction | DIP, DIP32,.6 | DIP, DIP32,.6 | - | DIP, DIP32,.6 | 0.600 INCH, PLASTIC, DIP-32 | TSOP1, TSSOP32,.8,20 |
| Contacts | 32 | 32 | - | 32 | 32 | 32 |
| Reach Compliance Code | unknow | _compli | - | _compli | unknow | unknow |
| ECCN code | EAR99 | EAR99 | - | EAR99 | EAR99 | EAR99 |
| Maximum access time | 90 ns | 70 ns | - | 120 ns | 120 ns | 90 ns |
| Other features | HARDWARE AND SOFTWARE DATA PROTECTION; 20-YEARS DATA RETENTION | HARDWARE AND SOFTWARE DATA PROTECTION; 20-YEARS DATA RETENTION | - | HARDWARE AND SOFTWARE DATA PROTECTION; 20-YEARS DATA RETENTION | - | HARDWARE AND SOFTWARE DATA PROTECTION; 20-YEARS DATA RETENTION |
| startup block | BOTTOM/TOP | BOTTOM/TOP | - | BOTTOM/TOP | BOTTOM/TOP | BOTTOM/TOP |
| command user interface | NO | NO | - | NO | - | NO |
| Data polling | YES | YES | - | YES | - | YES |
| Data retention time - minimum | 20 | 20 | - | 20 | - | 20 |
| Durability | 10000 Write/Erase Cycles | 10000 Write/Erase Cycles | - | 10000 Write/Erase Cycles | - | 10000 Write/Erase Cycles |
| JESD-30 code | R-PDIP-T32 | R-PDIP-T32 | - | R-PDIP-T32 | R-PDIP-T32 | R-PDSO-G32 |
| JESD-609 code | e0 | e0 | - | e0 | e0 | e0 |
| length | 41.91 mm | 41.91 mm | - | 41.91 mm | 41.91 mm | 18.4 mm |
| memory density | 2097152 bi | 2097152 bi | - | 2097152 bi | 2097152 bi | 2097152 bi |
| Memory IC Type | FLASH | FLASH | - | FLASH | FLASH | FLASH |
| memory width | 8 | 8 | - | 8 | 8 | 8 |
| Number of functions | 1 | 1 | - | 1 | 1 | 1 |
| Number of departments/size | 1,1,1 | 1,1,1 | - | 1,1,1 | - | 1,1,1 |
| Number of terminals | 32 | 32 | - | 32 | 32 | 32 |
| word count | 262144 words | 262144 words | - | 262144 words | 262144 words | 262144 words |
| character code | 256000 | 256000 | - | 256000 | 256000 | 256000 |
| Operating mode | ASYNCHRONOUS | ASYNCHRONOUS | - | ASYNCHRONOUS | ASYNCHRONOUS | ASYNCHRONOUS |
| Maximum operating temperature | 70 °C | 70 °C | - | 70 °C | 70 °C | 70 °C |
| organize | 256KX8 | 256KX8 | - | 256KX8 | 256KX8 | 256KX8 |
| Package body material | PLASTIC/EPOXY | PLASTIC/EPOXY | - | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| encapsulated code | DIP | DIP | - | DIP | DIP | TSOP1 |
| Encapsulate equivalent code | DIP32,.6 | DIP32,.6 | - | DIP32,.6 | - | TSSOP32,.8,20 |
| Package shape | RECTANGULAR | RECTANGULAR | - | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package form | IN-LINE | IN-LINE | - | IN-LINE | IN-LINE | SMALL OUTLINE, THIN PROFILE |
| Parallel/Serial | PARALLEL | PARALLEL | - | PARALLEL | PARALLEL | PARALLEL |
| Peak Reflow Temperature (Celsius) | NOT SPECIFIED | NOT SPECIFIED | - | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED |
| power supply | 5 V | 5 V | - | 5 V | - | 5 V |
| Programming voltage | 5 V | 5 V | - | 5 V | 5 V | 5 V |
| Certification status | Not Qualified | Not Qualified | - | Not Qualified | Not Qualified | Not Qualified |
| Maximum seat height | 5.33 mm | 5.33 mm | - | 5.33 mm | 5.33 mm | 1.2 mm |
| Department size | 8K,240K,8K | 8K,240K,8K | - | 8K,240K,8K | - | 8K,240K,8K |
| Maximum standby current | 0.0001 A | 0.0001 A | - | 0.0001 A | - | 0.0001 A |
| Maximum slew rate | 0.05 mA | 0.05 mA | - | 0.05 mA | - | 0.05 mA |
| Maximum supply voltage (Vsup) | 5.5 V | 5.5 V | - | 5.5 V | 5.5 V | 5.5 V |
| Minimum supply voltage (Vsup) | 4.5 V | 4.5 V | - | 4.5 V | 4.5 V | 4.5 V |
| Nominal supply voltage (Vsup) | 5 V | 5 V | - | 5 V | 5 V | 5 V |
| surface mount | NO | NO | - | NO | NO | YES |
| technology | CMOS | CMOS | - | CMOS | CMOS | CMOS |
| Temperature level | COMMERCIAL | COMMERCIAL | - | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | - | Tin/Lead (Sn/Pb) | TIN LEAD | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE | THROUGH-HOLE | - | THROUGH-HOLE | THROUGH-HOLE | GULL WING |
| Terminal pitch | 2.54 mm | 2.54 mm | - | 2.54 mm | 2.54 mm | 0.5 mm |
| Terminal location | DUAL | DUAL | - | DUAL | DUAL | DUAL |
| Maximum time at peak reflow temperature | NOT SPECIFIED | NOT SPECIFIED | - | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED |
| switch bit | YES | YES | - | YES | - | YES |
| type | NOR TYPE | NOR TYPE | - | NOR TYPE | NOR TYPE | NOR TYPE |
| width | 15.24 mm | 15.24 mm | - | 15.24 mm | 15.24 mm | 8 mm |
| Maximum write cycle time (tWC) | 10 ms | 10 ms | - | 10 ms | 10 ms | 10 ms |
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