● 作输出时与PIC的HI/LOW相同,可输出40mA(单一输出),作输入时可设置为三态高阻抗输入或带上拉电阻输入,具备10mA-20mA灌电流的能力;
● 片内集成多种频率的RC振荡器、上电自动复位、看门狗、启动延时等功能,外围电路更加简单,系统更加稳定可靠;● 大部分AVR片上资源丰富:带E2PROM,PWM,RTC,SPI,UART,TWI,ISP,AD,Analog Comparator,WDT等;
● 大部分AVR除了有ISP功能外,还有IAP功能,方便升级或销毁应用程序。
Devices |
|
EEPROM (Kbytes) |
SRAM (Bytes) |
I/O |
F.max (MHz) |
Vcc (V) |
pico -Power |
16bit Timers |
8bit Timers |
PWM channels |
RTC |
SPI |
UART |
TWI |
ISP |
10-bit A/D (channels) |
Analog Com -parator |
WDT |
Hardware Multiplier |
Ext Int -errupts |
Self Program Memory |
|
1 |
0.064 |
64B+32reg |
6 |
20 |
1.8-5.5 |
-- |
-- |
1 |
2 |
-- |
-- |
-- |
-- |
Yes |
4 |
Yes |
Yes |
No |
6 |
Yes |
|
2 |
0.128 |
128 |
12 |
20 |
1.8-5.5 |
-- |
1 |
1 |
4 |
-- |
USI |
-- |
USI |
Yes |
8 |
Yes |
Yes |
-- |
12 |
Yes |
|
4 |
0.256 |
256 |
12 |
20 |
1.8-5.5 |
-- |
1 |
1 |
4 |
-- |
USI |
-- |
USI |
Yes |
8 |
Yes |
Yes |
-- |
12 |
Yes |
|
8 |
0.512 |
512 |
12 |
20 |
1.8-5.5 |
-- |
1 |
1 |
4 |
-- |
USI |
-- |
USI |
Yes |
8 |
Yes |
Yes |
-- |
12 |
Yes |
|
2 |
0.125 |
128 |
16 |
16 |
2.7-5.5 |
-- |
-- |
2 |
2 |
-- |
USI |
-- |
USI |
Yes |
11 |
Yes |
Yes |
-- |
1 |
-- |
|
2 |
0.128 |
128 |
18 |
20 |
1.8-5.5 |
-- |
1 |
1 |
4 |
-- |
USI |
1 |
USI |
Yes |
-- |
Yes |
Yes |
-- |
2 |
Yes |
|
4 |
0.256 |
512 |
23 |
20 |
1.8-5.5 |
-- |
1 |
2 |
6 |
Yes |
1+USART |
1 |
Yes |
Yes |
8 / 6(DIP)
|
Yes |
Yes |
Yes |
26 |
Yes |
|
4 |
0.256 |
512 |
23 |
20 |
1.8-5.5 |
YES |
1 |
2 |
6 |
Yes |
1+USART |
1 |
Yes |
Yes |
8 / 6(DIP)
|
Yes |
Yes |
Yes |
26 |
Yes |
|
8 |
0.5 |
1024 |
23 |
20 |
1.8-5.5 |
-- |
1 |
2 |
6 |
Yes |
1+USART |
1 |
Yes |
Yes |
8 / 6(DIP) |
Yes |
Yes |
Yes |
26 |
Yes |
|
8 |
0.5 |
1024 |
23 |
20 |
1.8-5.5 |
YES |
1 |
2 |
6 |
Yes |
1+USART |
1 |
Yes |
Yes |
8 / 6(DIP) |
Yes |
Yes |
Yes |
26 |
Yes |
|
16 |
0.5 |
1024 |
23 |
20 |
1.8-5.5 |
-- |
1 |
2 |
6 |
Yes |
1+USART |
1 |
Yes |
Yes |
8 / 6(DIP) |
Yes |
Yes |
Yes |
26 |
Yes |
|
16 |
0.5 |
1024 |
23 |
20 |
1.8-5.5 |
YES |
1 |
2 |
6 |
Yes |
1+USART |
1 |
Yes |
Yes |
8 / 6(DIP) |
Yes |
Yes |
Yes |
26 |
Yes |
|
8 |
0.5 |
1024 |
23 |
16 |
2.7-5.5 |
-- |
1 |
2 |
3 |
Yes |
1 |
1 |
Yes |
Yes |
8 / 6(DIP) |
Yes |
Yes |
Yes |
2 |
Yes |
|
16 |
0.5 |
1024 |
32 |
16 |
2.7-5.5 |
-- |
1 |
2 |
4 |
Yes |
1 |
1 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
3 |
Yes |
|
16 |
0.5 |
1024 |
32 |
20 |
1.8-5.5 |
YES |
1 |
2 |
6 |
Yes |
1+USART |
2 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
32 |
Yes |
|
32 |
1 |
2048 |
32 |
16 |
2.7-5.5 |
-- |
1 |
2 |
4 |
Yes |
1 |
1 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
3 |
Yes |
|
32 |
1 |
2048 |
32 |
20 |
1.8-5.5 |
YES |
1 |
2 |
6 |
Yes |
1+USART |
2 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
32 |
Yes |
|
64 |
2 |
4096 |
53 |
16 |
2.7-5.5 |
-- |
2 |
2 |
8 |
Yes |
1 |
2 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
8 |
Yes |
|
128 |
4 |
4096 |
53 |
16 |
2.7-5.5 |
-- |
2 |
2 |
8 |
Yes |
1 |
2 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
8 |
Yes |
|
128 |
4 |
8192 |
86 |
16 |
1.8-5.5 |
-- |
4 |
2 |
16 |
Yes |
1+USART |
4 |
Yes |
Yes |
16 |
Yes |
Yes |
Yes |
32 |
Yes |
|
16 |
0.5 |
1024 |
35 |
16 |
1.8-5.5 |
-- |
2 |
2 |
6 |
Yes |
1 |
2 |
-- |
Yes |
-- |
Yes |
Yes |
Yes |
3 |
Yes |
|
16 |
0.5 |
1024 |
53 |
16 |
1.8-5.5 |
-- |
1 |
2 |
4 |
Yes |
1+USI |
1 |
USI |
Yes |
8 |
Yes |
Yes |
Yes |
17 |
Yes |
|
16 |
0.5 |
1024 |
54 |
16 |
1.8-5.5
|
YES |
1 |
2 |
4 |
Yes |
1+USI |
1 |
USI |
Yes |
8 |
Yes |
Yes |
Yes |
17 |
Yes |
|
8 |
0.5 |
512 |
35 |
16 |
2.7-5.5 |
-- |
1 |
1 |
3 |
-- |
1 |
1 |
-- |
Yes |
-- |
-- |
Yes |
Yes |
3 |
Yes |
|
8 |
0.5 |
512 |
32 |
16 |
2.7-5.5 |
-- |
1 |
2 |
4 |
-- |
1 |
1 |
Yes |
Yes |
8 |
Yes |
Yes |
Yes |
3 |
Yes |
选型范例
·基本要求:4K FLASH ROM,8个IO以上,8路AD,6路PWM,10个外部中断,批量价在5元内
推荐:ATmega48V ATmega48
·基本要求:16K FLASH ROM,50个IO口以上,超低功耗,批量价在12元内
推荐:ATmega169PV ATmega169P
·基本要求:64K FLASH ROM,50个IO口以上,4K EEPROM,8路AD,I2C,SPI,WDT,批量价在21元内
推荐:ATmega64L ATmega64
·基本要求:引脚兼容AT89S51/S52,16K FLASH ROM,1K EEPROM,WDT,2路USART,批量价在12元内
推荐:ATmega162V ATmega162
·基本要求:引脚兼容AT89C2051,2K FLASH ROM,128BIT EEPROM,WDT,批量价在4.5元内
推荐:ATtiny2313V ATtiny2313