参数资料
型号: MC68HC08QY4CDWE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封装: 1.27 MM PITCH, LEAD FREE, PLASTIC, MS-013AA, SOIC-16
文件页数: 149/178页
文件大小: 2311K
代理商: MC68HC08QY4CDWE
External Interrupt (IRQ)
MC68HC08QY/QT Family Data Sheet, Rev. 1
72
Freescale Semiconductor
Figure 8-1. Block Diagram Highlighting IRQ Block and Pin
When set, the IMASK bit in INTSCR masks the IRQ interrupt request. A latched interrupt request is not
presented to the interrupt priority logic unless IMASK is clear.
NOTE
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including the IRQ interrupt request.
A falling edge on the IRQ pin can latch an interrupt request into the IRQ latch. An IRQ vector fetch,
software clear, or reset clears the IRQ latch.
RST, IRQ: Pins have internal pull up device
All port pins have programmable pull up device
PTA[0:5]: Higher current sink and source capability
PTB[0:7]: Not available on 8-pin devices
PTA0/TCH0/AD0//KBI0
PTA1/TCH1/AD1/KBI1
PTA2/IRQ/KBI2/TCLK
PTA3/RST/KBI3
PTA4/OSC2/AD2/KBI4
PTA5/OSC1/AD3/KBI5
KEYBOARD INTERRUPT
MODULE
CLOCK
GENERATOR
SINGLE INTERRUPT
MODULE
MONITOR ROM
LOW-VOLTAGE
INHIBIT
COP
MODULE
DEVELOPMENT SUPPORT
PTB0/AD4
PTB
D
DRB
M68HC08 CPU
PT
A
DDRA
PTB1/AD5
PTB2
PTB3
PTB4
PTB5
PTB6
PTB7
MC68HC08QY4
4096 BYTES
USER ROM
POWER SUPPLY
VDD
VSS
MC68HC08QY4
128 BYTES
USER RAM
BREAK MODULE
AUTO WAKEUP
MODULE
2-CHANNEL 16-BIT
TIMER MODULE
6-CHANNEL
10-BIT ADC
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