參數(shù)資料
型號: AT80C51RD2-RLRUM
廠商: Atmel
文件頁數(shù): 51/81頁
文件大?。?/td> 0K
描述: IC MCU 80C51 HI PERFORM 44VQFP
產(chǎn)品培訓模塊: 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-LQFP
包裝: 標準包裝
其它名稱: AT80C51RD2-RLRUMDKR
55
4113D–8051–01/09
AT80C51RD2
Table 13-3.
KBLS Register
KBLS - Keyboard Level Selector Register (9Ch)
Reset Value = 0000 0000b
76
543
210
KBLS7
KBLS6
KBLS5
KBLS4
KBLS3
KBLS2
KBLS1
KBLS0
Bit
Number
Bit
Mnemonic
Description
7
KBLS7
Keyboard line 7 level selection bit
Cleared to enable a low level detection on Port line 7.
Set to enable a high level detection on Port line 7.
6
KBLS6
Keyboard line 6 level selection bit
Cleared to enable a low level detection on Port line 6.
Set to enable a high level detection on Port line 6.
5
KBLS5
Keyboard line 5 level selection bit
Cleared to enable a low level detection on Port line 5.
Set to enable a high level detection on Port line 5.
4
KBLS4
Keyboard line 4 level selection bit
Cleared to enable a low level detection on Port line 4.
Set to enable a high level detection on Port line 4.
3
KBLS3
Keyboard line 3 level selection bit
Cleared to enable a low level detection on Port line 3.
Set to enable a high level detection on Port line 3.
2
KBLS2
Keyboard line 2 level selection bit
Cleared to enable a low level detection on Port line 2.
Set to enable a high level detection on Port line 2.
1
KBLS1
Keyboard line 1 level selection bit
Cleared to enable a low level detection on Port line 1.
Set to enable a high level detection on Port line 1.
0
KBLS0
Keyboard line 0 level selection bit
Cleared to enable a low level detection on Port line 0.
Set to enable a high level detection on Port line 0.
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