参数资料
型号: AT80C51RD2-SLRUM
厂商: Atmel
文件页数: 46/81页
文件大小: 0K
描述: IC MCU 80C51 HI PERFORM 44PLCC
产品培训模块: MCU Product Line Introduction
标准包装: 1
系列: 80C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器类型: ROMless
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 标准包装
其它名称: AT80C51RD2-SLRUMDKR
50
4113D–8051–01/09
AT80C51RD2
IPH1 - Interrupt Priority High Register (B3h)
Reset Value = XXXX XXX0b
Not bit addressable
12.2
Interrupt Sources and Vector Addresses
Table 12-8.
Interrupt Sources and Vector Addresses
76
543
210
--
----
-
KBDH
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-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
0
KBDH
Keyboard interrupt Priority High bit
KB DHKBDLPriority Level
00 Lowest
0
1
10
1
1Highest
Number
Polling Priority
Interrupt Source
Interrupt
Request
Vector
Address
0
Reset
0000h
1
INT0
IE0
0003h
2
Timer 0
TF0
000Bh
3
INT1
IE1
0013h
4
Timer 1
IF1
001Bh
5
6
UART
RI+TI
0023h
6
7
Timer 2
TF2+EXF2
002Bh
7
5
PCA
CF + CCFn (n = 0-4)
0033h
8
Keyboard
KBDIT
003Bh
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