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| 型号： | DS89C440-QNG |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 30/46页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 32KB 25MHZ 44-PLCC |
| 标准包装： | 26 |
| 系列： | 89C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 25MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 管件 |
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DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers
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Interrupt Priority
There are five levels of interrupt priority: Level 4 to 0. The highest interrupt priority is level 4, which is reserved for
the power-fail interrupt. All other interrupts have individual priority bits in the interrupt priority registers to allow each
interrupt to be assigned a priority level from 3 to 0. The power-fail interrupt always has the highest priority if it is
enabled. All interrupts also have a natural hierarchy. In this manner, when a set of interrupts has been assigned the
same priority, a second hierarchy determines which interrupt is allowed to take precedence. The natural hierarchy
is determined by analyzing potential interrupts in a sequential manner with the order listed in Table 11.
The processor indicates that an interrupt condition occurred by setting the respective flag bit. This bit is set
regardless of whether the interrupt is enabled or disabled. Unless marked in Table 11, all these flags must be
cleared by software.
Table 11. Interrupt Summary
INTERRUPT
VECTOR
NATURAL ORDER
FLAG
ENABLE
PRIORITY CONTROL
Power Fail
33h
0 (Highest)
PFI (WDCON.4)
EPFI(WDCON.5)
N/A
External Interrupt 0
03h
1
IE0 (TCON.1) (Note 1)
EX0 (IE.0)
LPX0 (IP0.0);
MPX0 (IP1.0)
Timer 0 Overflow
0Bh
2
TF0 (TCON.5) (Note 2)
ET0 (IE.1)
LPT0 (IP0.1);
MPT0 (IP1.1)
External Interrupt 1
13h
3
IE1 (TCON.3) (Note 1)
EX1 (IE.2)
LPX1 (IP0.2);
MPX1 (IP1.2)
Timer 1 Overflow
1Bh
4
TF1 (TCON.7) (Note 2)
ET1 (IE.3)
LPT1 (IP0.3);
MPT1 (IP1.3)
Serial Port 0
23h
5
RI_0 (SCON0.0);
TI_0 (SCON0.1)
ES0 (IE.4)
LPS0 (IP0.4);
MPS0 (IP1.4)
Timer 2 Overflow
2Bh
6
TF2 (T2CON.7);
EXF2 (T2CON.6)
ET2 (IE.5)
LPT2 (IP0.5);
MPT2 (IP1.5)
Serial Port 1
3Bh
7
RI_1 (SCON1.0);
TI_1 (SCON1.1)
ES1 (IE.6)
LPS1 (IP0.6);
MPS1 (IP1.6)
External Interrupt 2
43h
8
IE2 (EXIF.4)
EX2 (EIE.0)
LPX2 (EIP0.0);
MPX2 (EIP1.0)
External Interrupt 3
4Bh
9
IE3 (EXIF.5)
EX3 (EIE.1)
LPX3 (EIP0.1);
MPX3 (EIP1.1)
External Interrupt 4
53h
10
IE4 (EXIF.6)
EX4 (EIE.2)
LPX4 (EIP0.2);
MPX4 (EIP1.2)
External Interrupt 5
5Bh
11
IE5 (EXIF.7)
EX5 (EIE.3)
LPX5 (EIP0.3);
MPX5 (EIP1.3)
Watchdog
63h
12 (Lowest)
WDIF (WDCON.3)
EWDI (EIE.4)
LPWDI (EIP0.4);
MPWDI (EIP1.4)
Note 1: If the interrupt is edge triggered, the flag is cleared automatically by hardware when the service routine is vectored to. If the interrupt
is level triggered, the flag follows the state of the pin.
Note 2: The flag is cleared automatically by hardware when the service routine is vectored to.
相关PDF资料 |
PDF描述 |
|---|---|
| DS89C440-MNL | IC MCU FLASH 32KB 33MHZ 40-DIP |
| DS89C440-MNG | IC MCU FLASH 32KB 25MHZ 40-DIP |
| DS89C440-ENL | IC MCU FLASH 32KB 33MHZ 44-TQFP |
| DS89C440-ENG | IC MCU FLASH 32KB 25MHZ 44-TQFP |
| MC9S08GT60ACBE | IC MCU 60K FLASH 4K RAM 42-SDIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS89C440-QNL | 功能描述:IC MCU FLASH 32KB 33MHZ 44-PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:89C 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:260 系列:73S12xx 核心处理器:80515 芯体尺寸:8-位 速度:24MHz 连通性:I²C，智能卡，UART/USART，USB 外围设备:LED，POR，WDT 输入/输出数:9 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-VFQFN 裸露焊盘 包装:管件 |
| DS89C440-QNL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Ultra-High-Speed Flash Microcontrollers |
| DS89C440-XXX | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Ultra-High-Speed Flash Microcontrollers |
| DS89C450 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Ultra-High-Speed Flash Microcontrollers |
| DS89C450+ENG | 制造商:Maxim Integrated Products 功能描述:MCU 8BIT CISC 64KB FLASH 5V 44TQFP - Trays |
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