Specification

Technical data sheets

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Product Details

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Select all	Attribute	Value
	Brand	Microchip
	Family Name	AT89LS
	Package Type	PLCC
	Mounting Type	Surface Mount
	Pin Count	44
	Device Core	80C51
	Data Bus Width	8bit
	Program Memory Size	8 kB
	Maximum Frequency	16MHz
	RAM Size	256 B
	USB Channels	0
	Number of PWM Units	0
	Number of SPI Channels	0
	Number of UART Channels	1
	Number of I2C Channels	0
	Typical Operating Supply Voltage	4 (Maximum) V
	Number of CAN Channels	0
	Number of Ethernet Channels	0
	Length	16.66mm
	Width	16.66mm
	Dimensions	16.66 x 16.66 x 4.06mm
	Pulse Width Modulation	0
	Maximum Operating Temperature	+85 °C
	Number of ADC Units	0
	Height	4.06mm
	ADCs	0
	Maximum Number of Ethernet Channels	0
	Instruction Set Architecture	MCS-51
	Minimum Operating Temperature	-40 °C
	Program Memory Type	Flash

	Select all
	Brand Microchip
	Family Name AT89LS
	Package Type PLCC
	Mounting Type Surface Mount
	Pin Count 44
	Device Core 80C51
	Data Bus Width 8bit
	Program Memory Size 8 kB
	Maximum Frequency 16MHz
	RAM Size 256 B
	USB Channels 0
	Number of PWM Units 0
	Number of SPI Channels 0
	Number of UART Channels 1
	Number of I2C Channels 0
	Typical Operating Supply Voltage 4 (Maximum) V
	Number of CAN Channels 0
	Number of Ethernet Channels 0
	Length 16.66mm
	Width 16.66mm
	Dimensions 16.66 x 16.66 x 4.06mm
	Pulse Width Modulation 0
	Maximum Operating Temperature +85 °C
	Number of ADC Units 0
	Height 4.06mm
	ADCs 0
	Maximum Number of Ethernet Channels 0
	Instruction Set Architecture MCS-51
	Minimum Operating Temperature -40 °C
	Program Memory Type Flash

Datasheet

COO (Country of Origin):: TW

Single-cycle microcontroller with 8KB ISP flash, 12-clock compatibility mode, 256 bytes flash data memory, 256 bytes RAM, three timers, UART, WDT, up to 36 I/Os, and an internal RC oscillator.

100% software and timing compatibility with AT89S52, meaning no changes to existing software, including fetching from external ROM or read/write from/to external RAM.Disable compatibility mode to achieve on average 9 times more throughput at the same current consumption and frequency as AT89S52, or lower the clock frequency 9 times and achieve the same speed as AT89S52 but with more than 5 times less current consumption.Save even more power and the cost of the quartz crystal altogether by using the internal 1.8432 MHz RC oscillator, which is Vcc and temperature compensated well enough to ensure proper UART serial communications.

Units	Per unit	Per Tube*
27 - 27	R 52.166	R 1,408.48
54 +	R 50.862	R 1,373.27

Microchip, 8bit 80C51, AT89LS Microcontroller, 16MHz, 8 kB Flash, 44-Pin PLCC

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