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Make : Nuvoton
Manufacturer P/N : MS51FB9AE
Supply Voltage : 2.4V ~ 5.5V
Core Processor : 8051
Core Size : 8-Bit
Speed : 24MHz
Connectivity : I²C, SPI, UART/USART
Peripherals : POR, PWM, WDT
Number of I/O : 18
Program Memory : FLASH 16KB (16K x 8)
RAM Size : 1K x 8
Data Converters : A/D 8x12b
Operating Temperature: -40°C ~ 105°C (TA)
Mounting Type : Surface Mount
Device Package : 20-TSSOP


Nuvoton MS51FB9AE is an embedded flash type, 8-bit high performance 8051-based microcontroller. The instruction set is fully compatible with the standard 80C51 and performance enhanced.

Nuvoton MS51FB9AE contains a up to 16K Bytes of main Flash called APROM, in which the contents of User Code resides. Nuvoton MS51FB9AE Flash supports In-Application-Programming (IAP) function, which enables on-chip firmware updates. IAP also makes it possible to configure any block of User Code array to be used as non-volatile data storage, which is written by IAP and read by IAP or MOVC instruction, this function means whole 16K Bytes area all can be use as Data Flash through IAP command.

Data Acquisition.
Low-cost Sensor integration.
Low power Embedded devices.
Small data retention related purposes.


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