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参数资料
| 型号： | AT89S4051-24PI |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-bit Microcontroller with 2K/4K Bytes Flash |
| 中文描述： | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDIP20 |
| 封装： | 0.300 INCH, MS-001AD, PLASTIC, DIP-20 |
| 文件页数： | 17/45页 |
| 文件大小： | 981K |
| 代理商： | AT89S4051-24PI |
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17
3390C–MICRO–7/05
AT89S2051/S4051
Notes:
1. SMOD is located at PCON.7.
2. f
osc
= frequency.
Table 17-1.
SCON – Serial Port Control Register
SCON Address = 98H
Reset Value = 0000 0000B
Bit Addressable
SM0/FE
SM1
SM2
REN
TB8
RB8
TI
RI
Bit
7
6
5
4
3
2
1
0
(SMOD = 0/1)
(1)
Symbol
Function
FE
Framing error bit. This bit is set by the receiver when an invalid stop bit is detected. The FE bit is not cleared by valid
frames but should be cleared by software. The SMOD0 bit must be set to enable access to the FE bit. FE will be set
regardless of the state of SMOD.
SM0
Serial Port Mode Bit 0, (SMOD must = 0 to access bit SM0)
SM1
Serial Port Mode Bit 1
SM2
Enables the Automatic Address Recognition feature in modes 2 or 3. If SM2 = 1 then Rl will not be set unless the received
9th data bit (RB8) is 1, indicating an address, and the received byte is a Given or Broadcast Address. In mode 1, if SM2 =
1 then Rl will not be activated unless a valid stop bit was received, and the received byte is a Given or Broadcast Address.
In Mode 0, SM2 should be 0.
Enables serial reception. Set by software to enable reception. Clear by software to disable reception.
REN
TB8
The 9th data bit that will be transmitted in modes 2 and 3. Set or clear by software as desired.
RB8
In modes 2 and 3, the 9th data bit that was received. In mode 1, if SM2 = 0, RB8 is the stop bit that was
received. In mode 0, RB8 is not used.
Transmit interrupt flag. Set by hardware at the end of the 8th bit time in mode 0, or at the beginning of the
stop bit in the other modes, in any serial transmission. Must be cleared by software.
Receive interrupt flag. Set by hardware at the end of the 8th bit time in mode 0, or halfway through the stop
bit time in the other modes, in any serial reception (except see SM2). Must be cleared by software.
TI
RI
SM0
SM1
Mode
Description
Baud Rate
(2)
0
0
0
shift register
f
osc
/12
0
1
1
8-bit UART
variable
1
0
2
9-bit UART
f
osc
/64 or f
osc
/32
1
1
3
9-bit UART
variable
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| AT89S4051-24PU | 功能描述:8位微控制器 -MCU 4K FLASH 24MHZ RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89S4051-24SU | 功能描述:8位微控制器 -MCU 4K FLASH 24MHZ RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89S4051-24SUR | 功能描述:8051 89S Microcontroller IC 8-Bit 24MHz 4KB (4K x 8) FLASH 20-SOIC 制造商:atmel 系列:89S 包装:管件 零件状态:有效 核心处理器:8051 核心尺寸:8-位 速度:24MHz 连接性:UART/USART 外设:欠压检测/复位，POR，PWM I/O 数:15 程序存储容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:256 x 8 电压 - 电源（Vcc/Vdd）:2.7 V ~ 5.5 V 数据转换器:- 振荡器类型:内部 工作温度:-40°C ~ 85°C（TA） 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 供应商器件封装:20-SOIC 标准包装:37 |
| AT89S4D12-12RC | 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| AT89S4D12-12RI | 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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