参数资料
型号: AT89C51RB2-SLSUM
厂商: Atmel
文件页数: 91/127页
文件大小: 0K
描述: IC 8051 MCU FLASH 16K 44PLCC
产品培训模块: MCU Product Line Introduction
标准包装: 972
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 16KB(16K 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 ~ 5.5 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
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
66
AT89C51RB2/RC2
4180E–8051–10/06
Table 52. KBE Register
KBE - Keyboard Input Enable Register (9Dh)
Reset Value = 0000 0000b
76
54
32
1
0
KBE7
KBE6
KBE5
KBE4
KBE3
KBE2
KBE1
KBE0
Bit
Number
Bit
Mnemonic
Description
7
KBE7
Keyboard Line 7 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 7 bit in KBF register to generate an interrupt request.
6
KBE6
Keyboard Line 6 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 6 bit in KBF register to generate an interrupt request.
5
KBE5
Keyboard Line 5 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 5 bit in KBF register to generate an interrupt request.
4
KBE4
Keyboard Line 4 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 4 bit in KBF register to generate an interrupt request.
3
KBE3
Keyboard Line 3 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 3 bit in KBF register to generate an interrupt request.
2
KBE2
Keyboard Line 2 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 2 bit in KBF register to generate an interrupt request.
1
KBE1
Keyboard Line 1 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 1 bit in KBF register to generate an interrupt request.
0
KBE0
Keyboard Line 0 Enable Bit
Cleared to enable standard I/O pin.
Set to enable KBF. 0 bit in KBF register to generate an interrupt request.
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