A280 用户手册 V1.1
目½
1
产品简介
....................................................................................................................................................... 4
1.1
产品特性
....................................................................................................................................... 4
1.2
订购信息
....................................................................................................................................... 5
1.3
系统框图
....................................................................................................................................... 5
1.4
引脚排列
....................................................................................................................................... 6
1.5
引脚说明
....................................................................................................................................... 6
中央处理器
................................................................................................................................................... 7
2.1
指令集
........................................................................................................................................... 7
2.2
程序存储器(OTP)
.................................................................................................................... 9
2.3
数据存储器
................................................................................................................................. 10
2.4
堆栈
............................................................................................................................................. 11
2.5
烧½配½选项
............................................................................................................................. 12
2.6
系统控制寄存器
......................................................................................................................... 15
系统时钟
..................................................................................................................................................... 17
3.1
内½高频
RC
振荡器
.................................................................................................................. 17
3.2
内½½频
RC
振荡器
.................................................................................................................. 17
3.3
工½模式
..................................................................................................................................... 17
3.4
休眠模式
..................................................................................................................................... 18
复½
............................................................................................................................................................. 19
4.1
复½条件
..................................................................................................................................... 19
4.2
上电复½
..................................................................................................................................... 20
4.3
外部复½
..................................................................................................................................... 20
4.4
½电压复½
................................................................................................................................. 20
4.5
看门狗复½
................................................................................................................................. 20
IO
口
............................................................................................................................................................ 21
5.1
IO
工½模式
................................................................................................................................ 21
5.2
上拉、下拉电阻和开漏控制
..................................................................................................... 21
定时器
......................................................................................................................................................... 23
6.1
定时器
T0.................................................................................................................................... 23
6.2
定时器
T1.................................................................................................................................... 25
6.3
WDT
定时器
............................................................................................................................... 28
中断
............................................................................................................................................................. 29
7.1
外部中断
..................................................................................................................................... 29
7.2
定时器中断
................................................................................................................................. 29
7.3
键盘中断
..................................................................................................................................... 29
7.4
中断相关寄存器
......................................................................................................................... 30
电气参数
..................................................................................................................................................... 31
8.1
极限参数
..................................................................................................................................... 31
8.2
直流电气参数
............................................................................................................................. 31
8.3
交流电气参数
............................................................................................................................. 34
特性曲线图
................................................................................................................................................. 35
9.1
IO
输出高电平驱动电流
VS
输出电平
................................................................................... 35
2
3
4
5
6
7
8
9
上海晟½微电子股½有限公司
2/59
A280 用户手册 V1.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
9.11
9.12
9.13
9.14
9.15
9.16
9.17
9.18
9.19
9.20
9.21
9.22
9.23
9.24
9.25
9.26
9.27
9.28
10
11
IO
输出½电平驱动电流
VS
输出电平
..................................................................................... 35
输入高½电平
VS
电源电压
.................................................................................................... 36
上拉电阻
VS
电源电压
.............................................................................................................. 38
下拉电阻
VS
电源电压
.............................................................................................................. 39
内部
16MHz
动态功耗
VS
电源电压
........................................................................................ 39
内部
8MHz
动态功耗
VS
电源电压
.......................................................................................... 40
内部
4MHz
动态功耗
VS
电源电压
.......................................................................................... 40
内部
2MHz
动态功耗
VS
电源电压
.......................................................................................... 41
内部
1MHz
动态功耗
VS
电源电压
.......................................................................................... 41
内部
455KHz
动态功耗
VS
电源电压
....................................................................................... 42
LIRC
动态功耗
VS
电源电压
................................................................................................... 42
LIRC
动态功耗
VS
温度
............................................................................................................ 43
STOP
功耗
ISB1 VS
温度
......................................................................................................... 43
STOP
功耗
ISB1 VS
电源电压
................................................................................................. 44
LVD
静态功耗
ISB2 VS
电源电压
........................................................................................... 44
LVR
静态功耗
ISB3 VS
电源电压
........................................................................................... 45
LVD、LVR
静态功耗
ISB4 VS
电源电压
................................................................................ 46
WDT
静态功耗
ISB5 VS
温度
.................................................................................................. 46
WDT
静态功耗
ISB5 VS
电源电压
.......................................................................................... 47
LVD
电压
VS
温度
..................................................................................................................... 47
HIRC=16MHz
频率
.................................................................................................................... 51
HIRC=18MHz
频率
.................................................................................................................... 52
HIRC=14MHz
频率
.................................................................................................................... 53
HIRC=455KHz
频率
................................................................................................................... 54
POR
电压
VS
温度
..................................................................................................................... 56
LIRC=32KHz
频率
..................................................................................................................... 56
最½工½电压
VS
系统时钟
FCPU
关系图
.............................................................................. 57
封装外½尺寸
..................................................................................................................................... 58
版本修订记½
..................................................................................................................................... 59
上海晟½微电子股½有限公司
3/59