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| PartNumber | Z8F042ASJ020SC | Z8F042ASJ020SC00TR | Z8F042ASJ020SG |
| Description | 8-bit Microcontrollers - MCU 4K FLASH 1K RAM | IC MCU 8BIT 4KB FLASH 28SOIC | IC MCU 8BIT 4KB FLASH 28SOIC |
| Manufacturer | ZiLOG | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| RoHS | N | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SOIC-28 | - | - |
| Series | Z8F042 | - | - |
| Core | eZ8 | - | - |
| Data Bus Width | 8 bit | - | - |
| Maximum Clock Frequency | 20 MHz | - | - |
| Program Memory Size | 4 kB | - | - |
| Data RAM Size | 1 kB | - | - |
| Number of I/Os | 23 I/O | - | - |
| Operating Supply Voltage | 2.7 V to 3.6 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Packaging | Tube | - | - |
| Height | 2.44 mm | - | - |
| Length | 18 mm | - | - |
| Program Memory Type | Flash | - | - |
| Width | 7.6 mm | - | - |
| Brand | ZiLOG | - | - |
| Data RAM Type | 1 kB | - | - |
| Data ROM Size | 128 B | - | - |
| Data ROM Type | Flash | - | - |
| Interface Type | UART | - | - |
| Number of Timers/Counters | 16 Timer | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 27 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 3.6 V | - | - |
| Supply Voltage Min | 2.7 V | - | - |
| Unit Weight | 0.078125 oz | - | - |