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Li Chao |
N79E8251/8241/8231/8221
集成I2C,UART,EEPROM,ADC,PWM,CMP
www.dycmcu.com
经济型8位FLASH单片机
N79A82X1规格书 Rev.1.20
选型指南
产品型号
N79A8251D20
N79A8251S20
N79A8241D20
N79A8241S20
N79A8231D20
N79A8231S20
N79A8231D16
N79A8231D14
N79A8221D20
N79A8221S20
存储器
NVM
FLASH
容量
I/O
(MIN/MAX)
16KB/256 256B 18/16
16KB/256 256B 18/16
8KB/256 256B 18/16
8KB/256 256B 18/16
4KB/128 128B 18/16
4KB/128 128B 18/16
4KB/128 128B 14/12
4KB/128 128B 12/10
2KB/128 128B 18/16
2KB/128 128B 18/16
接口
UART/I2C
UART/I2C
UART/I2C
UART/I2C
UART/I2C
UART/I2C
UART/I2C
UART/I2C
UART/I2C
UART/I2C
ADC
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
3x10Bit
1x10Bit
4x10Bit
4x10Bit
比较
器
PWM
4CH
4CH
4CH
4CH
4CH
4CH
3CH
2CH
4CH
4CH
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
4x10Bit
封装
DIP-20
SOP-20
DIP-20
SOP-20
DIP-20
SOP-20
DIP-16
DIP-14
DIP-20
SOP-20
技术支持
立超电子科技有限公司
中国南京市和燕路251号金港大厦A幢2406室
ZIP:210028
Tel: 0086-25-83306839/83310926
Fax: 0086-25-83737785
Website:http://www.dycmcu.com/
Free Datasheet http://www.Datasheet4U.com
N79E8251/8241/8231/8221
www.dycmcu.com
目录
1 概述 ............................................................................................................................................. 5
2 特性 ............................................................................................................................................. 5
3 产品型号信息............................................................................................................................... 6
3.1 无铅(RoHS)产品型号信息表列........................................................................................ 6
4 管脚配置 ...................................................................................................................................... 7
5 管脚描述 ...................................................................................................................................... 8
6 功能描述 ...................................................................................................................................... 9
6.1 片内 Flash EPROM......................................................................................................... 9
6.2 I/O端口 ............................................................................................................................ 9
6.3 串行口(UART) ................................................................................................................. 9
6.4 定时器 ............................................................................................................................. 9
6.5 中断................................................................................................................................. 9
6.6 数据指针........................................................................................................................ 10
6.7 电源管理........................................................................................................................ 10
6.8 CPU结构 ....................................................................................................................... 10
6.8.1 ALU .................................................................................................................................10
6.8.2 累加器(ACC) ...................................................................................................................10
6.8.3 寄存器B...........................................................................................................................10
6.8.4 程序状态字寄存器(PSW).................................................................................................11
6.8.5 片内便签RAM..................................................................................................................11
6.8.6 堆栈指针..........................................................................................................................11
7 内存组织 .................................................................................................................................... 12
7.1 程序内存........................................................................................................................ 12
7.2 数据存储器 .................................................................................................................... 12
7.3 寄存器的映射 ................................................................................................................ 13
7.4 工作寄存器 .................................................................................................................... 16
7.5 位寻址区........................................................................................................................ 16
7.6 堆栈............................................................................................................................... 16
8 特殊功能寄存器 ......................................................................................................................... 17
9 电源管理 .................................................................................................................................... 18
9.1 空闲模式........................................................................................................................ 18
9.2 掉电模式........................................................................................................................ 18
10 复位条件 .................................................................................................................................... 19
10.1 外部复位........................................................................................................................ 19
10.2 上电复位 (POR) ............................................................................................................ 19
10.3 看门狗定时器复位 ......................................................................................................... 19
10.4 复位状态........................................................................................................................ 19
Rev. 1.20
2
2007.8.16
Free Datasheet http://www.Datasheet4U.com
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