新编单片机原理与应用(本科)第6章

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1、第6章51LPC系列单片机芯片第6章51LPC系列单片机芯片6.1内部结构和引脚功能6.2I/O端口输出模式6.3键盘中断功能6.4模拟比较器6.5定时/计数器新增功能6.6时钟及复位电路6.7电源管理及复位电路6.8看门狗定时器6.9中断控制系统6.10硬件配置信息6.11A/D与D/A转换器第6章51LPC系列单片机芯片表6-1P87LPC76X系列芯片的主要性能指标第6章51LPC系列单片机芯片6.1内部结构和引脚功能6.1.1内部结构增强型80C51CPU程序存储器内部总线串行口(TOPROM)I2C总线内部数据存储器定时器

2、T0、T1P2口看门狗定时器振荡器P1口P0口模拟比较器键盘中断电源监控上电复位振荡器片内掉电复位振荡器配置(晶体或陶瓷)RC振荡器图6-1P87LPC76X内部结构第6章51LPC系列单片机芯片FFFFHFFFFH未用空间未用空间FCFFH32字节硬件配置区用户代码区FFHUCFG2FCF0HUCFG1FD01H特殊功能FD00H未用空间寄存器区80H程序代码区未用空间4KB7FH～内部RAM(64B～128B)1KB中断向量0000H00H0000H片内程序储器外部数据内部RAM和特殊功能寄存器(0TPROM)存储空间图6-2存

3、储器地址空间分配第6章51LPC系列单片机芯片在P87LPC76X中，程序存储器容量为1～4KB，占用了0000H～03FFH。FCE0H～FCFFH之间的32字节存储空间是用户代码区，可用于存放产品系列号、产生日期等信息，编程时随程序代码一起写入片内的OTPROM存储器，例如：ORGFCE0HDB31H,32H,33H,34H,35H,36H;在FCE0H处放置了31H、32H、33H、34H、35H、;36H（即ASCII的123456）作为产品的系列号这32字节信息可通过“MOVCA,A+@DPTR”指令读出。第6章51LPC

4、系列单片机芯片6.1.2引脚排列114116P1.7P0.3/CIN1BCMP2/P0.0P0.1/CIN2B2P0.4/CIN1A13215RST/P1.5P1.7P0.3/CIN1B3P0.5/CMPREF12314VSSRST/P1.5P0.4/CIN1A411413X1/P2.1VDDVSSP0.5/CMPREF510512X2/CLKOUT/P2.0P0.6/CMP1X1/P2.1VDD69611SDA/INT0/P1.3P1.0/TXDX2/CLKOUT/P2.0P0.6/CMP178710SCL/T0/P1.2P1.1

5、/RXDSDA/INT0/P1.3P1.0/TXD89SCL/T0/P1.2P1.1/RXDP87LPC760P87LPC761120120CMP2/P0.0P0.1/CIN2BCMP2/P0.0P0.1/CIN2B219219P1.7P0.2/CIN2AP1.7P0.2/CIN2A318318P1.6P0.3/CIN1BP1.6P0.3/CIN1B/AD04174175RST/P1.5P0.4/CIN1A165RST/P1.5P0.4/CIN1A/AD116VP0.5/CMPREFVP0.5/CMPREF/AD26SS156SS1

6、5X1/P2.1VDDX1/P2.1VDD714714X2/CLKOUT/P2.0P0.6/CMP1X2/CLKOUT/P2.0P0.6/CMP1/AD3813813INT1/P1.4P0.7/T1INT1/P1.4P0.7/T1912912SDA/INT0/P1.3P1.0/TXDSDA/INT0/P1.3P1.0/TXD10111011SCL/T0/P1.2P1.1/RXDSCL/T0/P1.2P1.1/RXDP87LPC762/764P87LPC767图6-3P87LPC76X系列DIP封装引脚排列第6章51LPC系列单片机芯

7、片120120PWM3/CMP2/P0.0P0.1/CIN2B/PWM0CMP2/P0.0P0.1/CIN2B219219P1.7/PWM2P0.2/CIN2A/BRAKEP1.7/DAC0P0.2/CIN2A318318P1.6/PWM1P0.3/CIN1B/AD0P1.6/DAC1P0.3/CIN1B/AD04174175RST/P1.5P0.4/CIN1A/AD1165RST/P1.5P0.4/CIN1A/AD116VP0.5/CMPREF/AD2VP0.5/CMPREF/AD26SS156SS15X1/P2.1VDDX1/P

8、2.1VDD714714X2/CLKOUT/P2.0P0.6/CMP1/AD3X2/CLKOUT/P2.0P0.6/CMP1/AD3813813INT1/P1.4P0.7/T1INT1/P1.4P0.7/T1912912SDA/INT