参数资料
型号: MC68HC05J1AVDW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封装: SOIC-20
文件页数: 67/128页
文件大小: 1279K
代理商: MC68HC05J1AVDW
Interrupts
Interrupt Sources
MC68HC05J1A — Rev. 3.0
Technical Data
MOTOROLA
Interrupts
43
Figure 4-1. External Interrupt Logic
External interrupt triggering sensitivity is a mask option. The IRQ pin can
be negative edge-triggered only or negative edge- and low
level-triggered.
With the mask option for an edge- and level-sensitive external interrupt
trigger, a falling edge or a low level on the IRQ pin latches an external
interrupt request. Edge- and level-sensitive triggering allows the use of
multiple wired-OR external interrupt sources. An external interrupt
request is latched as long as any source is holding the IRQ pin low.
With the mask option for an edge-sensitive only external interrupt trigger,
a falling edge on the IRQ pin latches an external interrupt request. A
subsequent external interrupt request can be latched only after the
voltage level on the IRQ pin returns to logic 1 and then falls again to
logic 0.
LEVEL-SENSITIVE TRIGGER
PA3
PA2
PA1
IRQ
PA0
IRQ
LATCH
VDD
(MASK OPTION)
RST
IRQ VECTOR FETCH
IRQ STATUS AND CONTROL REGISTER
EXTERNAL
INTERRUPT
REQUEST
IR
Q
E
IR
Q
F
IRQ
R
PORT A
EXTERNAL INTERRUPTS
ENABLED
(MASK OPTION)
INTERNAL DATA BUS
TO BIH & BIL
INSTRUCTION
PROCESSING
R
相关PDF资料
PDF描述
MDDFMM-TTL-38F 38 MHz, OTHER CLOCK GENERATOR, PDIP4
MAF8032AH-2P 8-BIT, 12 MHz, MICROCONTROLLER, PDIP40
MC68HC000LC16 32-BIT, 16.67 MHz, MICROPROCESSOR, CDIP64
MC68000FN12F 32-BIT, 16.67 MHz, MICROPROCESSOR, PQCC68
MC68HC16Z1MFD20 16-BIT, 20 MHz, MICROCONTROLLER, PQFP132
相关代理商/技术参数
参数描述
MC68HC05J1AVP 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05J3 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3CDW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3CP 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3DW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit