Atmega128l 8位ATMEL MICROCONTROLLER，带有128kbytes内系统可编程闪光灯

ATMEGA128L is ahigh-performance， 低电量，8位微控制器来自基于AVR RISC架构的Microchip。这个微控制器在业余爱好者和开发人员中并不那么受欢迎，但是如果您正在寻找Microchip AVR系列中的中等力量和合理的价格微控制器，那么这可能是您的绝佳选择。

ATMEGA128L引脚配置

ATMEGA328P is a 64 pins chip as shown in the pin diagram above. Many pins of the chip here have more than one function. We will describe the functions of each pin in the below table.

别针	Pin Name	引脚功能	描述和辅助功能
1			programming enable pin for the Serial Programming mode
2	PE0	RXD0/（PDI）	PDI/RXD0（编程数据输入 or UART0 Receive Pin)
3	PE1	TXD0/PDO	PDO/TXD0（编程数据输出） or UART0 Transmit Pin
4	PE2	XCK0/AIN0	Analog Comparator Positive Input or USART0 external clock input/output
5	PE3	OC3A/AIN1	Analog Comparator Negative Input or Output Compare and PWM Output A for Timer/Counter3
6	PE4	OC3B/INT4	External Interrupt4 Input or Output Compare and PWM Output B for Timer/Counter3
7	PE5	OC3C/INT5	External Interrupt 5 Input or Output Compare and PWM Output C for Timer/Counter3
8	PE6	T3/INT6	External Interrupt 6 Input or Timer/Counter3 Clock Input
9	PE7	ICP3/INT7	外部中断7输入或计时器/计数器3输入捕获引脚
10	PB0		SPI Slave Select input
11	PB1	SCK	SPI巴士串行时钟
12	PB2	莫西	SPI总线主输出/从输入
13	PB3	MISO	SPI BUS MASTER输入/从输出
14	PB4	OC0	输出比较计时器/counter0的PWM输出
15	PB5	OC1A	Output Compare and PWM Output A for Timer/Counter1
16	PB6	OC1B	输出比较计时器/counter1的PWM输出B
17	PB7	OC2/OC1C	Output Compare and PWM Output for Timer/Counter2 or Output Compare and PWM Output C for Timer/Counter1
18	PG3	TOSC2	RTC Oscillator Timer/Counter0
19	PG4	TOSC1/PG4	RTC Oscillator Timer/Counter0
20
21	VCC	VCC	数字电源电压
22	GND	GND	地面
23	XTAL2	XTAL2	XTAL2 (Chip Clock Oscillator pin 2)
24	XTAL1	XTAL1	XTAL1（芯片时钟振荡器引脚2）
25	PD0	scl/i nt0	外部中断0输入或TWI串行时钟）
26	PD1	SDA/I NT1	外部中断1输入或TWI序列数据
27	PD2	rxd1/i nt2	外部Intrupt2输入或UART1接收PIN
28	PD3	txd1/i nt3	外部中断3输入或UART1发射引脚
29	PD4	ICP1	Timer/Counter1 Input Capture Pin
30	PD5	XCK1	USART1外部时钟输入/输出
31	PD6	T1	Timer/Counter1 Clock Input
32	PD7	T2	Timer/Counter2 Clock Input
33	PG0		将频闪写入外部记忆
34	PG1		读取频率到外部内存
35	PC0	A8	兼容模式可用于外部存储器接口
36	PC1	A9	兼容模式可用于外部存储器接口
37	PC2	A10	兼容模式可用于外部存储器接口
38	PC3	A11	兼容模式可用于外部存储器接口
39	PC4	A12	兼容模式可用于外部存储器接口
40	PC5	A13	兼容模式可用于外部存储器接口
41	PC6	A14	兼容模式可用于外部存储器接口
42	PC7	A15	兼容模式可用于外部存储器接口
43	PG2	ALE	ALE是外部数据存储器地址闩锁启用信号。
44	PA7	AD7	外部内存接口地址和数据位7
45	PA6	AD6	外部内存接口地址和数据位6
46	PA5	AD5	外部内存接口地址和数据位5
47	PA4	AD4	外部内存接口地址和数据位4
48	PA3	AD3	外部内存接口地址和数据位3
49	PA2	AD2	外部内存接口地址和数据位2
50	PA1	AD1	外部内存接口地址和数据位1
51	PA0	AD0	外部内存接口地址和数据位0
52	VCC	VCC	数字电源电压
53	GND	GND	地面
54	PF7	ADC7/TDI	ADC input channel 7 or JTAG Test Data Input
55	PF6	ADC6/TDO	ADC输入通道6或JTAG测试数据输出
56	PF5	ADC5/TMS	ADC输入通道5或JTAG测试模式选择
57	PF4	ADC4/TCK	ADC input channel 4 or JTAG Test ClocK
58	PF3	ADC3	ADC input channel 3
59	PF2	ADC2	ADC input channel 2
60	PF1	ADC1	ADC input channel 1
61	PF0	ADC0	ADC input channel 0
62	AREF	AREF	AREF是A/D转换器的模拟参考引脚
63	GND	GND	地面
64	AVCC	AVCC	AVCCis the supply voltage pin for Port F and the A/D Converter. it should be connected to VCC through a low-pass filter.

笔记：检查Atmega128L数据表attached at the bottom of the page for more information on compatibility mode.

ATMEGA128L的功能和规格

• Operating Voltage: 2.7 - 5.5V ATmega128L
• Frequency Grade: 0 - 8MHz ATmega128L
• High Endurance Non-volatile Memory segments
• 128Kbytes of In-System Self-programmable Flash program memory
• 4Kbytes EEPROM
• 4Kbytes内部SRAM
• Write/Erase cycles: 10,000 Flash/100,000 EEPROM
• 两个8位PWM通道
• 6个PWM频道，可编程分辨率从2到16位
• 8-channel, 10-bit ADC
• 主/从SPI串行界面
• Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode, and Capture Mode
• 带有芯片振荡器的可编程观察员计时器
• On-chip Analog Comparator
• Two 8-bit Timer/Counters with Separate Prescaler
• 双重可编程串行USARTS
• 内部校准的RC振荡器
• Software Selectable Clock Frequency
• JTAG（IEEESTD。1149.1）符合边界扫描的接口，芯片调试
• 带独立锁定位的可选引导代码部分
• In-System Programming by On-chip Boot Program
• Data retention: 20 years at 85°C/100 years at 25°C

类似的微控制器类似Atmega128L

atmega8，atmega88，atmega8l，ATMEGA328L

如何使用atmega128l

ATMEGA128L是一个微控制器，需要进行编程，否则它不会像其他所有微控制器一样执行任何操作。没有程序，此IC除了消耗电流以运行内部功能外，无能为力。有多种编程Atmega128L微控制器的方法，最受欢迎的方法是使用USBasp Programmerwith AVRDude as a programming interface, you can build and compile your program in order to get a HEX file. When you get your HEX file you can dump the HEX on this IC with the help of the AVRDUDE Program. Another way to program this device is to use theArduino作为ISP程序员，如果您手头上有一个Arduino，则可以搜索网络的许多示例。下一个选项是给那些没有Arduino或Usbasp程序员的人，此过程称为Parallel Programming，您必须使用并口which is only available in older Desktop PCs, if you do not have the port, you can always purchase a PCI Parallel port converter for cheap.

在哪里使用atmega128l

As we have said earlier the Atmega128L is not that popular in comparison to Arduino, although there is an old version of Arduino that uses the ATmega128L as its main Controller. As the price of this controller is less than the ATmega328P along with a program memory of 32 Kbytes. This microcontroller can be used in many battery-powered applications with a watchdog timer to reset under error. It can be used on systems with minimal human interference and also has an advanced multi-mode PWM output that can be used for many different applications. The block diagram of the ATmega128L is shown below-

Applications

Atmega328p有数百个申请：

• 工业控制系统。
• SMP和电源调节系统。
• 数字数据处理。
• 模拟信号测量和操作。
• 嵌入式系统，例如咖啡机，自动售货机。
• Motor control systems.
• 显示单元。
• 外围接口系统。

2D Model and Dimensions

Below is the 2D model of the IC along with its dimensions in inches(millimeters). The following information can be used to design the custom footprints and be used for PCB designing and CAD modeling.