參數(shù)資料
型號: T89C51AC2-RLTIM
廠商: Atmel
文件頁數(shù): 119/121頁
文件大小: 0K
描述: IC 8051 MCU FLASH 32K 44VQFP
標準包裝: 160
系列: 89C
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): 34
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LQFP
包裝: 托盤
97
A/T89C51AC2
4127H–8051–02/08
Table 72. IPL0 Register
IPL0 (S:B8h)
Interrupt Enable Register
Reset Value = X000 0000b
bit addressable
7
6
5
4
3
2
1
0
-
PPC
PT2
PS
PT1
PX1
PT0
PX0
Bit
Number
Bit
Mnemonic Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
PPC
PCA Interrupt Priority bit
Refer to PPCH for priority level
5
PT2
Timer 2 Overflow Interrupt Priority bit
Refer to PT2H for priority level.
4
PS
Serial Port Priority bit
Refer to PSH for priority level.
3
PT1
Timer 1 Overflow Interrupt Priority bit
Refer to PT1H for priority level.
2
PX1
External Interrupt 1 Priority bit
Refer to PX1H for priority level.
1
PT0
Timer 0 Overflow Interrupt Priority bit
Refer to PT0H for priority level.
0
PX0
External Interrupt 0 Priority bit
Refer to PX0H for priority level.
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