| PartNumber | XC8661FRAABKXUMA1 | XC8661FRIABFXUMA1 | XC8661FRIABKXUMA1 |
| Description | 8-bit Microcontrollers - MCU 8 BIT FLASH | IC MCU 8BIT 4KB FLASH 38TSSOP | IC MCU 8BIT 4KB FLASH 38TSSOP |
| Manufacturer | Infineon | - | Infineon Technologies |
| Product Category | 8-bit Microcontrollers - MCU | - | Embedded - Microcontrollers |
| Package / Case | TSSOP-38 | - | - |
| Qualification | AEC-Q100 | - | - |
| Packaging | Reel | - | Tape & Reel (TR) |
| Brand | Infineon Technologies | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Part # Aliases | AB KX8661FRAABXT SAK-XC866-1FRA SP000235420 | - | - |
| Series | - | - | XC8xx |
| Package Case | - | - | 38-TFSOP (0.173", 4.40mm Width) |
| Operating Temperature | - | - | -40°C ~ 125°C (TA) |
| Supplier Device Package | - | - | 38-TSSOP |
| Number of I O | - | - | 19 |
| Speed | - | - | 86MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | - | |
| RAM Size | - | - | 768 x 8 |
| Program Memory Type | - | - | FLASH |
| Peripherals | - | - | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | - | SSI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 4.5 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Program Memory Size | - | - | 4KB (4K x 8) |
| Data Converters | - | - | A/D 8x10b |
| Oscillator Type | - | - | Internal |