參數(shù)資料
型號(hào): AT80C51RD2-SLSUM
廠商: Atmel
文件頁(yè)數(shù): 42/81頁(yè)
文件大小: 0K
描述: IC 8051 MCU 5V SPI 20MHZ 44-PLCC
標(biāo)準(zhǔn)包裝: 972
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(chǔ)器類(lèi)型: ROMless
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-PLCC
包裝: 管件
47
4113D–8051–01/09
AT80C51RD2
Reset Value = 0000 0000b
Bit addressable
Table 12-3.
IPL0 Register
IPL0 - Interrupt Priority Register (B8h)
Reset Value = X000 0000b
Bit addressable
Table 12-4.
IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
76
543
210
-
PPCL
PT2L
PSL
PT1L
PX1L
PT0L
PX0L
Bit
Number
Bit
Mnemonic
Description
7-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
PPCL
PCA interrupt priority bit
Refer to PPCH for priority level.
5PT2L
Timer 2 overflow interrupt priority bit
Refer to PT2H for priority level.
4
PSL
Serial port priority bit
Refer to PSH for priority level.
3PT1L
Timer 1 overflow interrupt priority bit
Refer to PT1H for priority level.
2
PX1L
External interrupt 1 priority bit
Refer to PX1H for priority level.
1PT0L
Timer 0 overflow interrupt priority bit
Refer to PT0H for priority level.
0
PX0L
External interrupt 0 priority bit
Refer to PX0H for priority level.
76
543
210
-
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
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