A leading supplier of 8051 compatible microcontrollers, Nuvoton offers a wide range of parts that meets the price/performance demand of industrial and consumer products OEMs. The 8-bit £gCs are supported by leading tool makers for rapid product development. ROM-less, ROM and Flash types are available with a rich set of I/O such as PWM, GPIO, DPTR, PCA Timers, ADC and more. 4T, 6T and 12T cores running at up to 40MHz provide one of the industry's best choices of 8051 £gCs.

	Part No. ROM Type ROM (Byte) RAM (Byte) NVM DataFlash I/O Pins Speed MHz Op. Volt Timer/ Counter Int ISP/ ICP Special Function PACKAGE* W79E825A Flash EPROM 16K 256 256B 18/15 20@5V 5.5V - 2.7V 2 13 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel PWM-4 Channel 10-bit ADC-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E824A Flash EPROM 8K 256 256B 18/15 20@5V 5.5V - 2.7V 2 13 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel PWM-4 Channel 10-bit ADC-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E823B Flash EPROM 4K 128 128B 18/15 20@5V 5.5V - 2.7V 2 13 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel PWM-4 Channel 10-bit ADC-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E822B Flash EPROM 2K 128 128B 18/15 20@5V 5.5V - 2.7V 2 13 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel PWM-4 Channel 10-bit ADC-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E804A Flash EPROM 8K 256 256B 18/15 20@5V 5.5V - 2.7V 2 12 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel PWM-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E803A Flash EPROM 4K 256 256B 18/15 20@5V 5.5V - 2.7V 2 12 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel 10-bit PWM-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E802A Flash EPROM 2K 256 256B 18/15 20@5V 5.5V - 2.7V 2 12 ICP -4T/ Machine Cycle -One UART-Two DPTR-WDT-4 Channel PWM-I2C-Two analog Comparator-Internal RC OSC-Low Voltage Detect D20/ S20 W79E834A Flash EPROM 8K 256 + 256 - 26/23 20@5V 5.5V-2.7V 3 13 ICP -4T/ Machine Cycle -One UART-WDT-10bit PWM x4-10-bit ADC x8-SPI-6MHz Internal RC OSC-Low Voltage Detect-3 Input Capture L48/ S28 W79E833A Flash EPROM 4K 256 - 26/23 20@5V 5.5V-2.7V 3 13 ICP -4T/ Machine Cycle -One UART-WDT-10bit PWM x4-10-bit ADC x4-SPI-6MHz Internal RC OSC-Low Voltage Detect-3 Input Capture S28 W79E832A Flash EPROM 2K 256 - 26/23 20@5V 5.5V-2.7V 3 13 ICP -4T/ Machine Cycle -One UART-WDT-10bit PWM x4-10-bit ADC x4-SPI- 6MHz Internal RC OSC-Low Voltage Detect-3 Input Capture S28 W79E8213 Flash EPROM 4K 128 128 18/15 20@5V 5.5V-2.4V 2 10 ICP -4T/ Machine Cycle -WDT-10bit PWM x4-10-bit ADCx8-10/20MHz ¡Ó25% Internal RC OSC-Low Voltage Detect-3 Input Capture-Buzzer wave generator-Eight high sink port pins(40mA) D20/S20 W79E8213R Flash EPROM 4K 128 128 18/15 20@5V 5.5V-2.4V 2 10 ICP -4T/ Machine Cycle -WDT-10bit PWM x4-10-bit ADCx8-10/20MHz ¡Ó2% Internal RC OSC-Low Voltage Detect-3 Input Capture-Buzzer wave generator-Eight high sink port pins(40mA) D20/S20 W79E2051A Flash EPROM 2K 256 128 17 24@5V 5.5V-2.4V 2 9 ICP -4T/ Machine Cycle -WDT-10bit PWM x1-Internal RC OSC-1 1/22MHz „b25% (W79E2051A)-11/22MHz „b2% at 5V, 25„aC (W79E2051RA)-4-level brownout-1 analog comparator -High sink port pins(20mA) PDIP20/ SOP20/SSOP20 W79E2051RA W79E4051A Flash EPROM 4K 256 128 17 24@5V 5.5V-2.4V 2 9 ICP -4T/ Machine Cycle -WDT-10bit PWM x1-Internal RC OSC-1 1/22MHz „b25% (W79E4051A)-11/22MHz „b2% at 5V, 25„aC (W79E4051RA)-4-level brownout-1 analog comparator -High sink port pins(20mA) PDIP20/ SOP20/SSOP20 W79E4051RA N79E342 Flash EPROM 2K 128 128 14 12@5V 5.5V-2.4V 2 8 ICP -4T/ Machine Cycle -WDT-Clock switchingby software -10-bit ADCx4- Internal RC OSC 455KHz¡Ó30% at 3.3V 25¢XC(N79E342)455KHz¡Ó2% at 3.3V, 25¢XC(N79E342R)-Low Voltage Detect-Buzzer wave generator-High sink port pins(18mA) DIP16/ SOP16 N79E342R N79E875 Flash EPROM 16K 512 128 36/34 40@5V 5.5V-2.4V 4 17 ICP -8 Channel 12-bit PWM and complement & dead-time control -8 Channel 10-bit ADC-UART,SPI & I2C-1 Channel OP-2 Channel analog comparator-3 Input capture-Internal RC OSC-Borwn out reset-Operating temperaturerange: -40 ~85¢J LQFP48 N79E875R Flash EPROM 16K 512 128 36/34 40@5V 5.5V-2.4V 4 17 ICP -8 Channel 12-bit PWM and complement & dead-time control -8 Channel 10-bit ADC-UART,SPI & I2C-1 Channel OP-2 Channel analog comparator-3 Input capture-¡Ó2% 22MHz Internal RC OSC @ 3.3V 25¢J-Borwn out reset-Operating temperaturerange: -40 ~85¢J LQFP48