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参数资料
| 型号： | IS82C59A-12Z |
| 厂商： | Intersil |
| 文件页数： | 19/22页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR INTERRPT 12.5MHZ 28PLCC |
| 标准包装： | 37 |
| 控制器类型： | CMOS 优先中断控制器 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 1mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 带卷 (TR) |
6
FN2784.5
March 17, 2006
Interrupt Request Register (IRR) and In-Service Register
(ISR)
The interrupts at the IR input lines are handled by two registers
in cascade, the Interrupt Request Register (lRR) and the In-
Service Register (lSR). The IRR is used to indicate all the
interrupt levels which are requesting service, and the ISR is
used to store all the interrupt levels which are currently being
serviced.
Priority Resolver
This logic block determines the priorities of the bits set in the
lRR. The highest priority is selected and strobed into the
corresponding bit of the lSR during the INTA sequence.
Interrupt Mask Register (IMR)
The lMR stores the bits which disable the interrupt lines to be
masked. The IMR operates on the output of the IRR.
Masking of a higher priority input will not affect the interrupt
request lines of lower priority.
Interrupt (INT)
This output goes directly to the CPU interrupt input. The
VOH level on this line is designed to be fully compatible with
the 8080, 8085, 8086/88, 80C86/88, 80286, and 80C286
input levels.
Interrupt Acknowledge (INTA)
INTA pulses will cause the 82C59A to release vectoring
information onto the data bus. The format of this data
depends on the system mode (
PM) of the 82C59A.
Data Bus Buffer
This 3-state, bidirectional 8-bit buffer is used to interface the
82C59A to the System Data Bus. Control words and status
information are transferred through the Data Bus Buffer.
Read/Write Control Logic
The function of this block is to accept output commands from
the CPU. It contains the Initialization Command Word (lCW)
registers and Operation Command Word (OCW) registers
which store the various control formats for device operation.
This function block also allows the status of the 82C59A to
be transferred onto the Data Bus.
Chip Select (CS)
A LOW on this input enables the 82C59A. No reading or
writing of the device will occur unless the device is selected.
Write (WR)
A LOW on this input enables the CPU to write control words
(lCWs and OCWs) to the 82C59A.
Read (RD)
A LOW on this input enables the 82C59A to send the status
of the Interrupt Request Register (lRR), In-Service Register
(lSR), the Interrupt Mask Register (lMR), or the interrupt
level (in the poll mode) onto the Data Bus.
A0
This input signal is used in conjunction with WR and RD
signals to write commands into the various command
registers, as well as to read the various status registers of
the chip. This line can be tied directly to one of the system
address lines.
The Cascade Buffer/Comparator
This function block stores and compares the IDs of all
82C59As used in the system. The associated three I/O pins
(CAS0 - 2) are outputs when the 82C59A is used as a
master and are inputs when the 82C59A is used as a slave.
As a master, the 82C59A sends the ID of the interrupting
slave device onto the CAS0 - 2 lines. The slave, thus
selected will send its preprogrammed subroutine address
onto the Data Bus during the next one or two consecutive
INTA pulses. (See section “Cascading the 82C59A”.)
Interrupt Sequence
The powerful features of the 82C59A in a microcomputer
system are its programmability and the interrupt routine
addressing capability. The latter allows direct or indirect
jumping to the specified interrupt routine requested without
any polling of the interrupting devices. The normal sequence
of events during an interrupt depends on the type of CPU
being used.
82C59A
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| IS82C59A-12Z96 | 功能描述:接口-I/O扩展器 W/ANNEAL PERIPH INT CNTRLR 5V 12 5MHZ RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| IS82C59A-5 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:CMOS Priority Interrupt Controller |
| IS82C59AX96 | 功能描述:IC CTRLR INTERRUPT 8MHZ 28-PLCC RoHS:否 类别:集成电路 (IC) >> 接口 - 控制器 系列:- 标准包装:4,900 系列:- 控制器类型:USB 2.0 控制器 接口:串行 电源电压:3 V ~ 3.6 V 电流 - 电源:135mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:36-VFQFN 裸露焊盘 供应商设备封装:36-QFN（6x6） 包装:* 其它名称:Q6396337A |
| IS82C59AZ | 功能描述:接口-I/O扩展器 PERIPH INT CNTRLR 5V 8MHZ 28PLCC IND RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| IS82C59AZX96 | 功能描述:接口-I/O扩展器 PERIPH INT CNTRLR 5V 8MHZ 28PLCC IND RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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