MS51FB9AE – 8051 8-Bit Microcontroller IC – 20-TSSOP Package The MS51FB9AE / MS51XB9AE / MS51XB9BE provides rich peripherals including 256 Bytes of SRAM, 1K Bytes of auxiliary RAM (XRAM), Up to 18 general purposes I/O, two 16-bit Timers/Counters 0/1, one 16-bit Timer2 with three-channel input capture module, one Watchdog Timer (WDT), one Self Wake-up Timer (WKT), one 16-bit auto-reload Timer3 for general purpose or baud rate generator, two UARTs with frame error detection and automatic address recognition, one SPI, one I2C, five enhanced PWM output channels, eight-channel shared pin interrupt for all I/O, and one 12-bit ADC. The peripherals are equipped with 18 sources with 4-level-priority interrupts capability. This product is known as MS51FB9AE, 8051 NuMicro MS51 Microcontroller IC 8-Bit 24MHz, Nuvoton MS51FB9AE Microcontroller, MS51FB9AE – 8bit 8051 Microcontroller 16Kb Flash 1Kb SRAM 24MHz 20Pin TSSOP. Features/Specs: Manufacturer Part No: MS51FB9AE Manufacturer: Nuvoton Technology Corporation Series: NuMicro MS51 Core Processor: 8051 Core Size: 8-Bit Speed: 24MHz Connectivity: I²C, SPI, UART/USART Peripherals: Brown-out Detect/Reset, LVR, POR, PWM, WDT Number of I/O: 18 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1K x 8 Voltage Supply: 2.4V ~ 5.5V Data Converters: A/D 8x12b SAR Oscillator Type: Internal Operating Temperature: -40°C ~ 105°C Mounting Type: Surface Mount Package/Case: 20-TSSOP Application: LED lighting Home appliances Industrial control Motor control Battery management system Power supplies