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发表于 2010-6-25 14:22:00
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回复【楼主位】liyaofeng2000
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不知道LZ用过Holtek的单片机么？推荐使用Holtek一颗芯片：HT45R37
如果有什么需要可以发邮件给我，lyf@crownrich-tech.com
Features
Operating voltage:
fSYS=32768Hz: 2.2V~5.5V
fSYS=4MHz: 2.2V~5.5V
fSYS=8MHz: 3.0V~5.5V
fSYS=12MHz: 4.5V~5.5V
OTP Program Memory: 4K15
RAM Data Memory: 1608
27 bidirectional I/O lines
Three external interrupt input shared with I/O lines
Two 8-bit programmable Timer/Event Counter
with overflow interrupt and 7-stage prescaler
External C/R to F converter
16-Channel Capacitor/Resistor sensor inputs
Integrated Crystal, IRC, ERC and RTC oscillator
Fully integrated internal RC oscillator available with
three frequencies: 4MHz, 8MHz or 12MHz
Watchdog Timer function
LIRC or RTC oscillator function for watchdog timer
PFD and Buzzer for audio frequency generation
Dual Serial Interfaces: SPI and I
2
C
4 operating modes: normal, slow, idle and sleep
6-level subroutine nesting
6-channel 12-bit resolution A/D converter
2-channel 12-bit PWM output shared with I/O line
Low voltage reset function - 2.1V, 3.15V, 4.2V
Low voltage detect function - 2.2V, 3.3V, 4.4V
Bit manipulation instruction
15-Bit table read instructions
63 powerful instructions
Up to 0.33s instruction cycle with 12MHz system
clock at VDD=5V
All instructions executed in one or two machine
cycles
Idle/Sleep mode and wake-up functions to reduce
power consumption
Time-Base and RTC interrupt
20-pin DIP/SOP, 24/28-pin SKDIP/SOP/SSOP,
32-pin QFN and 44-pin QFP packages |
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