HC89S105xx
HC89S105C8
HC89S105S8
HC89S105K8
数据手册
48/44/32
引脚
8
½
ADC
型
FLASH
单片机
外设功½引脚全映射
1
HC89S105xx
目½
1
产品简介................................................................................................................................................................
6
1.1
1.2
1.3
1.4
1.5
1.6
2
功½特性
....................................................................................................................................................... 6
应用注意
....................................................................................................................................................... 7
系统框图
....................................................................................................................................................... 8
引脚配½
....................................................................................................................................................... 9
引脚描述
..................................................................................................................................................... 12
外设功½引脚全映射模块
PTM ................................................................................................................ 18
CPU ..................................................................................................................................................................... 20
2.1
2.2
CPU
特性
.................................................................................................................................................... 20
CPU
相关寄存器
......................................................................................................................................... 20
3
存储器
................................................................................................................................................................. 22
3.1
3.2
3.3
程序存储器(FLASH)
............................................................................................................................. 22
数据存储器(RAM)
................................................................................................................................ 27
特殊功½寄存器(SFR)
.......................................................................................................................... 28
4
系统时钟..............................................................................................................................................................
31
4.1
4.2
系统时钟特性
............................................................................................................................................. 31
系统时钟相关寄存器
................................................................................................................................. 32
5
电源管理..............................................................................................................................................................
36
5.1
5.2
5.3
5.4
电源管理特性
............................................................................................................................................. 36
空闲模式
..................................................................................................................................................... 36
掉电模式
..................................................................................................................................................... 36
电源管理相关寄存器
................................................................................................................................. 37
6
复½
..................................................................................................................................................................... 38
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
复½特性
..................................................................................................................................................... 38
POR(P
OWER
-O
N
R
ESET
)复½
................................................................................................................... 38
BOR(B
ROWN
-
OUT
R
ESET
)复½
.............................................................................................................. 38
外部
RST
复½
............................................................................................................................................ 38
外部端口½压检测复½
................................................................................................
错误!未定义书签。
½件复½
..................................................................................................................................................... 39
看门狗(WDT)复½
................................................................................................................................ 39
复½相关寄存器
......................................................................................................................................... 40
7
通用及复用
I/O ................................................................................................................................................... 43
7.1
7.2
7.3
7.4
7.5
通用及复用
I/O
特性
.................................................................................................................................. 43
I/O
模式
....................................................................................................................................................... 43
I/O
功½框图
............................................................................................................................................... 44
I/O
端口相关寄存器
................................................................................................................................... 44
外设功½引脚全映射控制
......................................................................................................................... 54
2
HC89S105xx
8
中断
..................................................................................................................................................................... 56
8.1
8.2
8.3
8.4
8.5
8.6
8.7
9
中断特性
..................................................................................................................................................... 56
中断汇总
..................................................................................................................................................... 57
中断向量
..................................................................................................................................................... 57
中断优先级
................................................................................................................................................. 57
中断处理
........................................................................................................................
错误!未定义书签。
外部中断
..................................................................................................................................................... 59
中断相关寄存器
......................................................................................................................................... 59
定时器/计数器
.................................................................................................................................................... 65
9.1
9.2
定时器/计数器特性
.................................................................................................................................... 65
定时器/计数器
T
X
(
X
= 0,1) ......................................................................................................................... 65
脉½调制
PWM .............................................................................................................................................. 70
10.1
10.2
PWM
特性
................................................................................................................................................... 70
PWM
相关寄存器
....................................................................................................................................... 71
可编程计数阵列
PCA .................................................................................................................................... 81
11.1
11.2
11.3
PCA
特性
.................................................................................................................................................... 81
PCA
工½模式.............................................................................................................................................
81
PCA
相关寄存器
......................................................................................................................................... 84
实时时钟
RTC ............................................................................................................................................... 89
12.1
12.2
RTC
特性
..................................................................................................................................................... 89
RTC
相关寄存器
......................................................................................................................................... 90
看门狗定时器
WDT ....................................................................................................................................... 91
13.1
13.2
WDT
特性
................................................................................................................................................... 91
WDT
相关寄存器
....................................................................................................................................... 91
通用异步收发器
UART ................................................................................................................................. 94
14.1
14.2
14.3
14.4
14.5
14.6
14.7
UART
特性
.................................................................................................................................................. 94
工½方式
..................................................................................................................................................... 94
波特率发生器
........................................................................................................................................... 100
多机通信
................................................................................................................................................... 101
帧出错检测
............................................................................................................................................... 102
UART1
相关寄存器
.................................................................................................................................. 102
UART2....................................................................................................................................................... 105
串行外部设备接口
SPI ................................................................................................................................ 109
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
SPI
特性
.................................................................................................................................................... 109
SPI
信号描述.............................................................................................................................................
109
SPI
时钟速率.............................................................................................................................................
110
SPI
功½框图.............................................................................................................................................
110
SPI
工½模式.............................................................................................................................................
110
SPI
传送½式.............................................................................................................................................
112
SPI
出错检测.............................................................................................................................................
113
SPI
中断
.................................................................................................................................................... 113
3
10
11
12
13
14
15
HC89S105xx
15.9 SPI
配½对照.............................................................................................................................................
114
15.10
SPI
相关寄存器
.................................................................................................................................... 114
16
IIC
总线.............................................................................................................................................................
116
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
17
17.1
17.2
17.3
18
18.1
18.2
19
19.1
19.2
20
21
22
22.1
22.2
22.3
22.4
22.5
22.6
22.7
22.8
23
23.1
23.2
23.3
24
24.1
24.2
IIC
特性
..................................................................................................................................................... 116
IIC
总线工½原理
..................................................................................................................................... 116
总线上数据的有效性
............................................................................................................................... 117
总线上的信号
........................................................................................................................................... 117
总线上数据初始格式
............................................................................................................................... 118
IIC
总线寻址约定
..................................................................................................................................... 119
主机向从机读写
1
个字节数据的过程
.................................................................................................... 119
IIC
工½模式
............................................................................................................................................. 121
IIC
总线相关寄存器
................................................................................................................................. 126
模数½换
ADC .............................................................................................................................................. 129
ADC
特性
.................................................................................................................................................. 129
ADC
省电唤醒
.......................................................................................................................................... 129
ADC
相关寄存器
...................................................................................................................................... 131
½电压检测
LVD .......................................................................................................................................... 135
LVD
特性
.................................................................................................................................................. 135
LVD
相关寄存器
...................................................................................................................................... 135
循环冗½校验
CRC ...................................................................................................................................... 137
CRC
特性
.................................................................................................................................................. 137
CRC
相关寄存器
...................................................................................................................................... 138
代码选项
....................................................................................................................................................... 139
指令表
........................................................................................................................................................... 140
电气特性
....................................................................................................................................................... 145
极限参数
................................................................................................................................................... 145
DC
特性
..................................................................................................................................................... 145
AC
特性
..................................................................................................................................................... 147
ADC
特性
.................................................................................................................................................. 147
FLASH
特性
.............................................................................................................................................. 148
BOR
检测电压特性
.................................................................................................................................. 148
LVD/PLVD
检测电压特性
....................................................................................................................... 148
其他电气特性
........................................................................................................................................... 149
开发工具
....................................................................................................................................................... 150
HC-LINK
仿真工具
................................................................................................................................. 150
HC-PM51
烧½工具
.................................................................................................................................. 150
½件下½½
................................................................................................................................................... 150
封装尺寸
....................................................................................................................................................... 151
LQFP48 ..................................................................................................................................................... 151
LQFP44 ..................................................................................................................................................... 151
4
HC89S105xx
24.3
25
LQFP32 ..................................................................................................................................................... 152
版本记½
....................................................................................................................................................... 153
5