参数资料
型号: AT89C51IC2-SLSIL
厂商: Atmel
文件页数: 94/140页
文件大小: 0K
描述: IC 8051 MCU FLASH 32K 44PLCC
标准包装: 27
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
57
AT89C51IC2
4301D–8051–02/08
Table 46. BDRCON Register
BDRCON - Baud Rate Control Register (9Bh)
Reset Value = XXX0 0000b
Not bit addressable
7
6
5
4
3
2
1
0
-
BRR
TBCK
RBCK
SPD
SRC
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
BRR
Baud Rate Run Control bit
Cleared to stop the internal Baud Rate Generator.
Set to start the internal Baud Rate Generator.
3
TBCK
Transmission Baud rate Generator Selection bit for UART
Cleared to select Timer 1 or Timer 2 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
2
RBCK
Reception Baud Rate Generator Selection bit for UART
Cleared to select Timer 1 or Timer 2 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
1
SPD
Baud Rate Speed Control bit for UART
Cleared to select the SLOW Baud Rate Generator.
Set to select the FAST Baud Rate Generator.
0
SRC
Baud Rate Source select bit in Mode 0 for UART
Cleared to select F
OSC/12 as the Baud Rate Generator (FCLK PERIPH/6 in X2
mode).
Set to select the internal Baud Rate Generator for UARTs in mode 0.
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