ความเห็นเพิ่มเติมที่ 3 22 พ.ย. 2550 (10:55) ลองตัวนี้ดูครับ ต่อวงจรง่ายมาก ราคา 46 บาท
ATMEGA8-16PU
ใช้ตัวเดียวต่อไฟเลี้ยงทำงานได้เลย ไม่ต้องต่อวงจร power on reset
และ ไม่ต้องใช้ crystal เพราะมี onchip oscillator
มีหน่วยความจำ eeprom แถมให้อีกในชิพ
Features
High-performance, Low-power AVR® 8-bit Microcontroller
Advanced RISC Architecture
130 Powerful Instructions Most Single-clock Cycle Execution
32 x 8 General Purpose Working Registers
Fully Static Operation
Up to 16 MIPS Throughput at 16 MHz
On-chip 2-cycle Multiplier
High Endurance Non-volatile Memory segments
8K Bytes of In-System Self-programmable Flash program memory
512 Bytes EEPROM
1K Byte Internal SRAM
Write/Erase Cycles: 10,000 Flash/100,000 EEPROM (1)(3)
Data retention: 20 years at 85°C/100 years at 25°C (2)(3)
Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
Programming Lock for Software Security
Peripheral Features
Two 8-bit Timer/Counters with Separate Prescaler, one Compare Mode
One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture
Mode
Real Time Counter with Separate Oscillator
Three PWM Channels
8-channel ADC in TQFP and QFN/MLF package
Eight Channels 10-bit Accuracy
6-channel ADC in PDIP package
Six Channels 10-bit Accuracy
Byte-oriented Two-wire Serial Interface
Programmable Serial USART
Master/Slave SPI Serial Interface
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analog Comparator
Special Microcontroller Features
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated RC Oscillator
External and Internal Interrupt Sources
Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and
Standby
I/O and Packages
23 Programmable I/O Lines
28-lead PDIP, 32-lead TQFP, and 32-pad QFN/MLF
Operating Voltages
2.7 - 5.5V (ATmega8L)
4.5 - 5.5V (ATmega8)
Speed Grades
0 - 8 MHz (ATmega8L)
0 - 16 MHz (ATmega8)
Power Consumption at 4 Mhz, 3V, 25°C
Active: 3.6 mA
Idle Mode: 1.0 mA
Power-down Mode: 0.5 μA
ตอบแล้ว:
6
