參數(shù)資料
型號: AT80C51RD2-SLRUM
廠商: Atmel
文件頁數(shù): 46/81頁
文件大小: 0K
描述: IC MCU 80C51 HI PERFORM 44PLCC
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標準包裝: 1
系列: 80C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器類型: ROMless
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 標準包裝
其它名稱: 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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