| PartNumber | SCH3221-7U-TR | SCH3221I-7U | SCH3221-7U |
| Description | I/O Controller Interface IC LPC IO with 8042 KBC Multiple Serial Port | I/O Controller Interface IC LPC IO with 8042 KBC HWM Mult Ser Ports | I/O Controller Interface IC LPC IO with 8042 KBC Multiple Serial Port |
| Manufacturer | Microchip | Microchip | Microchip Technology |
| Product Category | I/O Controller Interface IC | I/O Controller Interface IC | Interface - Specialized |
| RoHS | Y | Y | - |
| Package / Case | WFBGA-64 | WFBGA-64 | - |
| Series | SAPEIO | - | SAPEIO |
| Packaging | Reel | Tray | Tray Alternate Packaging |
| Brand | Microchip Technology | Microchip Technology | - |
| Product Type | I/O Controller Interface IC | I/O Controller Interface IC | - |
| Factory Pack Quantity | 3000 | 490 | - |
| Subcategory | Interface ICs | Interface ICs | - |
| Mounting Style | - | SMD/SMT | - |
| Product | - | Multiprotocol Card Interface | - |
| Interface Type | - | UART | - |
| Number of I/Os | - | 33 I/O | - |
| Operating Supply Voltage | - | 3.3 V | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Number of Ports | - | 4 | - |
| Moisture Sensitive | - | Yes | - |
| Operating Supply Current | - | 17 mA | - |
| Watchdog Timers | - | Watchdog | - |
| Type | - | - | - |
| Package Case | - | - | 64-WFBGA |
| Operating Temperature | - | - | - |
| Mounting Type | - | - | Surface Mount |
| Applications | - | - | Controller |
| Interface | - | - | LPC |
| Voltage Supply | - | - | 3.3V |
| Supplier Device Package | - | - | 64-WFBGA (6x6) |
| Current Supply | - | - | - |
| Number of Inputs | - | - | - |
| Proximity Detection | - | - | - |
| LED Driver Channels | - | - | - |
| Resolution | - | - | - |