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SC91F72BD20U

20PIN,4K FLASH ROM(带256B EEPROM),128B SRAM,18个GP I/O(8个大电流驱动),2个16位Timer,8路10位ADC,2路8位PWM,软件UART.

器件类别:嵌入式处理器和控制器   

厂商名称:赛元(SOC)

厂商官网:http://www.socmcu.com/

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SinOne Chip
SC91F72B
10
½
ADC
1T 8051
内核
Flash MCU
目½
目½
.......................................................................................................................................... 1
1
总½描述
............................................................................................................................... 4
2
主要特色
............................................................................................................................... 4
3
管脚定义
............................................................................................................................... 5
3.1
管脚配½
................................................................................................................................................................... 5
3.2
管脚定义
................................................................................................................................................................... 6
4
内部方框图
............................................................................................................................ 8
5 FLASH ROM
SRAM
结构
................................................................................................. 9
5.1 flash rom
................................................................................................................................................................. 9
5.2 Code Option
区域(用户烧写设½)
................................................................................................................. 10
5.3 sram
........................................................................................................................................................................ 11
6
特殊功½寄存器(SFR)
......................................................................................................... 13
6.1 SFR
映像
................................................................................................................................................................ 13
6.2 SFR
说明
................................................................................................................................................................ 13
7
电源、复½和时钟
............................................................................................................... 15
7.1
电源电路
................................................................................................................................................................. 15
7.2
上电复½过程
......................................................................................................................................................... 15
7.3
复½方式
................................................................................................................................................................. 16
7.3.1
外部
RST
复½
............................................................................................................................................ 16
7.3.2
½电压复½
LVR..........................................................................................................................................
16
7.3.3
上电复½
POR
............................................................................................................................................. 17
7.3.4
½件复½
...................................................................................................................................................... 17
7.3.5
看门狗复½
WDT
........................................................................................................................................ 17
7.3.6
复½初始状态
.............................................................................................................................................. 18
7.4
时钟电路
................................................................................................................................................................. 18
7.5
省电模式
STOP
...................................................................................................................................................... 18
8
中央处理单元
CPU
及指令系统
........................................................................................... 19
8.1 CPU
......................................................................................................................................................................... 19
SinOne Chip
SC91F72B
8.2
寻址方式
................................................................................................................................................................. 19
8.2.1
立即寻址
...................................................................................................................................................... 19
8.2.2
直接寻址
...................................................................................................................................................... 19
8.2.3
间接寻址
...................................................................................................................................................... 19
8.2.4
寄存器寻址
.................................................................................................................................................. 19
8.2.5
相对寻址
...................................................................................................................................................... 19
8.2.6
变址寻址
...................................................................................................................................................... 19
8.2.7
½寻址
.......................................................................................................................................................... 19
8.3
指令系统
.................................................................................................................................................................. 20
9 INTERRUPT
中断
............................................................................................................... 23
9.1
中断源、向量
.......................................................................................................................................................... 23
9.2
中断结构图
.............................................................................................................................................................. 23
9.3
中断优先级
............................................................................................................................................................. 24
9.4
中断处理流程
.......................................................................................................................................................... 25
9.5
中断相关
SFR
寄存器
............................................................................................................................................ 25
10
定时器
TIMER0
、TIMER1
............................................................................................... 27
10.1 T0
T1
相关特殊功½寄存器
........................................................................................................................... 27
10.2 T0
工½模式
.......................................................................................................................................................... 29
10.3 T1
工½模式
.......................................................................................................................................................... 31
11 PWM ................................................................................................................................. 32
11.1 PWM
结构框图.....................................................................................................................................................
33
11.2 PWM
相关
SFR
寄存器
....................................................................................................................................... 33
11.3 PWM
波½及用法
................................................................................................................................................. 36
12 GP I/O ............................................................................................................................... 38
12.1 GPIO
结构图
........................................................................................................................................................ 38
12.2 I/O
端口相关寄存器
............................................................................................................................................. 40
12.3 I/O
端口复用
......................................................................................................................................................... 41
13
模数½换
ADC ................................................................................................................... 43
13.1 ADC
相关寄存器
.................................................................................................................................................. 43
Page 2 of 54
深圳市赛元微电子有限公司
V 1.4
http://www.socmcu.com
SinOne Chip
SC91F72B
13.2 ADC
½换步骤.....................................................................................................................................................
45
14 IAP
操½
............................................................................................................................ 45
14.1 IAP
操½相关寄存器
........................................................................................................................................... 45
14.2 IAP
操½流程.......................................................................................................................................................
46
14.3 IAP
读写范例程序
............................................................................................................................................... 47
15
电气特性............................................................................................................................
48
15.1
极限参数
............................................................................................................................................................... 48
15.2
推荐工½条件
....................................................................................................................................................... 48
15.3
直流电气特性
(VDD = 3.6V ~ 5.5V, TA = +25℃,除非另有说明)
................................................................. 48
15.4
交流电气特性
(VDD = 3.6V ~ 5.5V, TA = 25℃,
除非另有说明)
.................................................................. 48
15.5 ADC
电气特性
(TA = 25℃,
除非另有说明).....................................................................................................
48
15.6 ADC
实测曲线图
.................................................................................................................................................. 49
16
订购信息............................................................................................................................
50
17
封装信息............................................................................................................................
51
18
规格更改记½
.................................................................................................................... 54
Page 3 of 54
深圳市赛元微电子有限公司
V 1.4
http://www.socmcu.com
SinOne Chip
1
总½描述
SC91F72B
SC91F72B
是一颗加强型的超快速
1T 8051
工业级
Flash
微控制器,指令系统完全兼容传统
8051
产品系
列。SC91F72B 内部集成有
4KB Flash ROM(内部 256Byte
可½为
EEPROM)、128B SRAM、最多 18
GP
I/O、2
16
½定时器、8 路
10
½高精度
ADC、2
8
½
PWM、内部高精度 16M/8M Hz
振荡器等资源。为提高
可靠性及简化客户电路,SC91F72B 内部也集成有
4
级可选电压
LVR、2.4V
基准
ADC
参考电压、WDT 等高可
靠电源电路。SC91F72B 可广泛应用于各种小家电、充电器、工业控制等应用领域。
2
主要特色
工½电压:
工½温度:
封装:
内核:
存储器:
系统时钟:
3.6V~5.5V
-40 ~ 85
DIP20L
、SOP20L、SOP16L
超快速的
1T 8051
4KB Flash ROM(MOVC
禁止寻址
0000H~00FFH), 128B SRAM
内建
16M/8M Hz
振荡器
IC
工½的系统时钟,可通过编程器选择设定
频率误差: 跨越
(4.5V~5.5V)
(-40
度,
85
度) 应用环境, 不超过 ±2%
½电压复½(LVR):
复½电压有
4
级可选:分别是:
4.1V、3.9V、3.7V、3.5V
缺省值为用户烧写
Code Option
所选值
Flash
烧写:
4
线串口烧写接口
中断(INT):
TIMER0, TIMER1, INT0~7, ADC, PWM
12
个中断源
INT0~3、INT5~7
7
个中断向量入口,下降沿触发
INT4
为单独的中断向量入口,可设上升沿、下降沿、双沿中断
两级中断优先级可设
数字外围:
18
个双向强输出
GP I/O,4
种模式可设
16
½
WDT,可选时钟分频比
2
个标准
80C51 16
½定时器
TIMER0
TIMER1
2
路共用周期、单独可调占空比的
8
½
PWM
模拟外围:
8
10
½
ADC
1)
内建基准的
2.4V
参考电压
2) ADC
的参考电压有
3
种选择, 分别是
VDD
、Vref(P1.6) 以及 内部
2.4V
3)
可设
ADC
½换完成中断
省电模式:
STOP MODE (也称 POWER DOWN MODE)
可由
INT0~7
或者外部
RSTN
唤醒
STOP MODE
Page 4 of 54
深圳市赛元微电子有限公司
V 1.4
http://www.socmcu.com
SinOne Chip
3
管脚定义
3.1
管脚配½
SC91F72B
VSS
ENB/
RST/P1.0
CEN/
PWM1/P1.1
CLK/
PWM0/T0/P1.2
DIO/
INT2/T1/P1.3
1
2
3
20
19
18
VDD
P3.0/INT0/AIN0
P3.1/INT1/AIN1
P3.2/AIN2
P3.3/AIN3
P3.4/AIN4
P3.5/AIN5
P3.6/AIN6
P3.7/AIN7
P2.1
SC91F72B
4
5
6
7
8
9
10
17
16
15
14
13
12
11
INT3/P1.4
INT4/P1.5
Vref/INT5/P1.6
INT6/P1.7
INT7/P2.0
SC91F72B管脚配½图
VSS
ENB/
RST/P1.0
CEN/
PWM1/P1.1
CLK/
PWM0/T0/P1.2
DIO/
INT2/T1/P1.3
1
2
16
15
VDD
P3.0/INT0/AIN0
P3.1/INT1/AIN1
P3.2/AIN2
P3.3/AIN3
P3.4/AIN4
P3.5/AIN5
P3.6/AIN6
SC91F72B
3
4
5
6
7
8
14
13
12
11
10
9
INT3/P1.4
INT4/P1.5
Vref/INT5/P1.6
SC91F72B管脚配½图
Page 5 of 54
深圳市赛元微电子有限公司
V 1.4
http://www.socmcu.com
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