| PartNumber | 71M6521FE-IM/F | 71M6521FE-IGT/F | 71M6521FE-IGTR/F |
| Description | Metering Systems on a Chip - SoC Residential Energy Meter IC | Metering Systems on a Chip - SoC Residential Energy Meter IC | Systems on a Chip - SoC Metering Systems on a Chip - SoC Residential Energy Meter IC |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Metering Systems on a Chip - SoC | Metering Systems on a Chip - SoC | PMIC - Energy Metering |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFN-68 | LQFP-64 | - |
| Series | 71M6521FE | 71M6521FE | Single Converter TechnologyR |
| Core | 80515 | 80515 | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 5 MHz | 5 MHz | - |
| Program Memory Size | 32 kB | 32 kB | - |
| Data RAM Size | 2 kB | 2 kB | - |
| ADC Resolution | 22 bit | 22 bit | - |
| Number of I/Os | 18 I/O | 18 I/O | - |
| Operating Supply Voltage | 3.3 V | 3.3 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Tube | Tape & Reel (TR) |
| Program Memory Type | Flash | Flash | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Data RAM Type | XRAM | XRAM | - |
| Interface Type | I2C, UART | I2C, UART | - |
| Development Kit | 71M6521FE-DB | 71M6521FE-DB | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 2 x 16 bit | 2 x 16 bit | - |
| Processor Series | 80515 | 80515 | - |
| Product Type | SOC - Metering Systems on a Chip | SOC - Metering Systems on a Chip | - |
| Factory Pack Quantity | 260 | 160 | - |
| Subcategory | SOC - Systems on a Chip | SOC - Systems on a Chip | - |
| Part # Aliases | 71M6521FE 90-W6520+X05 | 71M6521FE 90-W6520+X08 | - |
| Unit Weight | 0.028572 oz | 0.012088 oz | - |
| Package Case | - | - | 64-LQFP |
| Operating Temperature | - | - | -40°C ~ 85°C |
| Mounting Type | - | - | Surface Mount |
| Voltage Supply | - | - | 3 V ~ 3.6 V |
| Supplier Device Package | - | - | 64-LQFP (10x10) |
| Current Supply | - | - | - |
| Input Impedance | - | - | - |
| Measurement Error | - | - | 0.004 |
| Voltage I O High | - | - | - |
| Voltage I O Low | - | - | - |
| Meter Type | - | - | Single Phase, Dual Phase |