参数资料
型号: KSZ8851-16MQL
厂商: Micrel Inc
文件页数: 42/88页
文件大小: 0K
描述: IC CTLR MAC/PHY NON-PCI 128-PQFP
产品培训模块: KSZ8851 10/100 Embedded Controllers
标准包装: 66
控制器类型: 以太网控制器,MAC/PHY
接口: 总线
电源电压: 1.8V,2.5V,3.3V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-BFQFP
供应商设备封装: 128-PQFP(14x20)
包装: 托盘
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-3292-ND - BOARD EVALUATION KSZ8851-16MLL
其它名称: 576-3253
PIC16F8X
DS30430C-page 48
1998 Microchip Technology Inc.
8.9
Interrupts
The PIC16F8X has 4 sources of interrupt:
External interrupt RB0/INT pin
TMR0 overflow interrupt
PORTB change interrupts (pins RB7:RB4)
Data EEPROM write complete interrupt
The interrupt control register (INTCON) records
individual interrupt requests in flag bits. It also contains
the individual and global interrupt enable bits.
The global interrupt enable bit, GIE (INTCON<7>)
enables (if set) all un-masked interrupts or disables (if
cleared) all interrupts. Individual interrupts can be
disabled through their corresponding enable bits in
INTCON register. Bit GIE is cleared on reset.
The “return from interrupt” instruction, RETFIE, exits
interrupt routine as well as sets the GIE bit, which
re-enable interrupts.
The RB0/INT pin interrupt, the RB port change interrupt
and the TMR0 overflow interrupt flags are contained in
the INTCON register.
When an interrupt is responded to; the GIE bit is
cleared to disable any further interrupt, the return
address is pushed onto the stack and the PC is loaded
with 0004h. For external interrupt events, such as the
RB0/INT pin or PORTB change interrupt, the interrupt
latency will be three to four instruction cycles. The
exact latency depends when the interrupt event occurs
(Figure 8-17). The latency is the same for both one and
two cycle instructions. Once in the interrupt service
routine the source(s) of the interrupt can be determined
by polling the interrupt flag bits. The interrupt flag bit(s)
must be cleared in software before re-enabling
interrupts to avoid infinite interrupt requests.
FIGURE 8-16: INTERRUPT LOGIC
Note 1: Individual interrupt flag bits are set
regardless
of
the
status
of
their
corresponding mask bit or the GIE bit.
RBIF
RBIE
T0IF
T0IE
INTF
INTE
GIE
EEIE
Wake-up
(If in SLEEP mode)
Interrupt to CPU
EEIF
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KSZ8851-16MQL-EVAL 功能描述:以太网开发工具 Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free) Eval Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压:
KSZ8851-16MQLI 功能描述:以太网 IC Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free, I-Temp) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8851-32MQL 功能描述:以太网 IC 10/100BT Ethernet MAC + PHY with Generic (32-bit) Bus Interface, Lead Free RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8851-32MQLI 功能描述:以太网 IC 10/100BT Ethernet MAC + PHY with Generic (32-bit) Bus Interface (I-Temp) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
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