参数资料
型号: AT89C51AC3-RDTIM
厂商: Atmel
文件页数: 128/140页
文件大小: 0K
描述: IC 8051 MCU FLASH 64K 64VQFP
标准包装: 160
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 64-LQFP
包装: 托盘
dsPIC33FJXXXGPX06/X08/X10
DS70286C-page 86
2009 Microchip Technology Inc.
REGISTER 7-1:
SR: CPU STATUS REGISTER(1)
R-0
R/C-0
R-0
R/C-0
R -0
R/W-0
OA
OB
SA
SB
OAB
SAB
DA
DC
bit 15
bit 8
R/W-0(3)
R-0
R/W-0
IPL2(2)
IPL1(2)
IPL0(2)
RA
N
OV
Z
C
bit 7
bit 0
Legend:
C = Clear only bit
R = Readable bit
U = Unimplemented bit, read as ‘0’
S = Set only bit
W = Writable bit
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-5
IPL<2:0>: CPU Interrupt Priority Level Status bits(2)
111
= CPU Interrupt Priority Level is 7 (15), user interrupts disabled
110
= CPU Interrupt Priority Level is 6 (14)
101
= CPU Interrupt Priority Level is 5 (13)
100
= CPU Interrupt Priority Level is 4 (12)
011
= CPU Interrupt Priority Level is 3 (11)
010
= CPU Interrupt Priority Level is 2 (10)
001
= CPU Interrupt Priority Level is 1 (9)
000
= CPU Interrupt Priority Level is 0 (8)
Note 1: For complete register details, see Register 3-1: “SR: CPU STATUS REGISTER”.
2: The IPL<2:0> bits are concatenated with the IPL<3> bit (CORCON<3>) to form the CPU Interrupt Priority
Level. The value in parentheses indicates the IPL if IPL<3> = 1. User interrupts are disabled when
IPL<3> = 1.
3: The IPL<2:0> Status bits are read-only when NSTDIS (INTCON1<15>) = 1.
REGISTER 7-2:
CORCON: CORE CONTROL REGISTER(1)
U-0
R/W-0
R-0
—US
EDT
DL<2:0>
bit 15
bit 8
R/W-0
R/W-1
R/W-0
R/C-0
R/W-0
SATA
SATB
SATDW
ACCSAT
IPL3(2)
PSV
RND
IF
bit 7
bit 0
Legend:
C = Clear only bit
R = Readable bit
W = Writable bit
-n = Value at POR
‘1’ = Bit is set
0’ = Bit is cleared
‘x = Bit is unknown
U = Unimplemented bit, read as ‘0’
bit 3
IPL3: CPU Interrupt Priority Level Status bit 3(2)
1
= CPU interrupt priority level is greater than 7
0
= CPU interrupt priority level is 7 or less
Note 1: For complete register details, see Register 3-2: “CORCON: CORE CONTROL REGISTER”.
2: The IPL3 bit is concatenated with the IPL<2:0> bits (SR<7:5>) to form the CPU Interrupt Priority Level.
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