Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

MC908QT1VFQE Datasheet(PDF) 76 Page - Freescale Semiconductor, Inc

No. de pieza MC908QT1VFQE
Descripción Electrónicos  Microcontrollers
Download  184 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC908QT1VFQE Datasheet(HTML) 76 Page - Freescale Semiconductor, Inc

Back Button MC908QT1VFQE Datasheet HTML 72Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 73Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 74Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 75Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 76Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 77Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 78Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 79Page - Freescale Semiconductor, Inc MC908QT1VFQE Datasheet HTML 80Page - Freescale Semiconductor, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 76 / 184 page
background image
External Interrupt (IRQ)
MC68HC908QY/QT Family Data Sheet, Rev. 5
76
Freescale Semiconductor
8.4 Interrupts
The following IRQ source can generate interrupt requests:
Interrupt flag (IRQF) — The IRQF bit is set when the IRQ pin is asserted based on the IRQ mode.
The IRQ interrupt mask bit, IMASK, is used to enable or disable IRQ interrupt requests.
8.5 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-consumption standby modes.
8.5.1 Wait Mode
The IRQ module remains active in wait mode. Clearing IMASK in INTSCR enables IRQ interrupt requests
to bring the MCU out of wait mode.
8.5.2 Stop Mode
The IRQ module remains active in stop mode. Clearing IMASK in INTSCR enables IRQ interrupt requests
to bring the MCU out of stop mode.
8.6 IRQ Module During Break Interrupts
The system integration module (SIM) controls whether status bits in other modules can be cleared during
the break state. The BCFE bit in the break flag control register (BFCR) enables software to clear status
bits during the break state. See Chapter 13 System Integration Module (SIM).
To allow software to clear status bits during a break interrupt, write a 1 to the BCFE bit. If a status bit is
cleared during the break state, it remains cleared when the MCU exits the break state.
To protect status bits during the break state, write a 0 to BCFE. With BCFE cleared (its default state),
software can read and write registers during the break state without affecting status bits. Some status bits
have a two-step read/write clearing procedure. If software does the first step on such a bit before the
break, the bit cannot change during the break state as long as BCFE is cleared. After the break, doing the
second step clears the status bit.
8.7 I/O Signals
The IRQ module shares its pin with the keyboard interrupt, input/output ports, and timer interface
modules.
NOTE
When the IRQ function is enabled in the CONFIG2 register, the BIH and BIL
instructions can be used to read the logic level on the IRQ pin. If the IRQ
function is disabled, these instructions will behave as if the IRQ pin is a
logic 1, regardless of the actual level on the pin. Conversely, when the IRQ
function is enabled, bit 2 of the port A data register will always read a 0.
When using the level-sensitive interrupt trigger, avoid false interrupts by
masking interrupt requests in the interrupt routine. An internal pullup
resistor to VDD is connected to the IRQ pin; this can be disabled by setting
the IRQPUD bit in the CONFIG2 register ($001E).


Número de pieza similar - MC908QT1VFQE

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Freescale Semiconductor...
MC908QT1VFQE FREESCALE-MC908QT1VFQE Datasheet
2Mb / 168P
   M68HC08 Microcontrollers
More results

Descripción similar - MC908QT1VFQE

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Freescale Semiconductor...
MC9S08DZ128 FREESCALE-MC9S08DZ128 Datasheet
4Mb / 458P
   Microcontrollers
MC9S08SG8 FREESCALE-MC9S08SG8_09 Datasheet
3Mb / 316P
   Microcontrollers
M68HC05 FREESCALE-M68HC05 Datasheet
1Mb / 128P
   Microcontrollers
M68HC08 FREESCALE-M68HC08 Datasheet
2Mb / 188P
   Microcontrollers
MC9S08QD4 FREESCALE-MC9S08QD4_08 Datasheet
2Mb / 202P
   Microcontrollers
MC68HC908QY4CDW FREESCALE-MC68HC908QY4CDW Datasheet
1Mb / 184P
   Microcontrollers
MC9S08AW16CFGE FREESCALE-MC9S08AW16CFGE Datasheet
1Mb / 324P
   Microcontrollers
MC68HC908GT16 FREESCALE-MC68HC908GT16 Datasheet
4Mb / 278P
   Microcontrollers
MC68HC908QC16 FREESCALE-MC68HC908QC16_07 Datasheet
3Mb / 274P
   Microcontrollers
MC68HC908QY4A FREESCALE-MC68HC908QY4A_07 Datasheet
2Mb / 200P
   Microcontrollers
MC68HC08AZ60A FREESCALE-MC68HC08AZ60A Datasheet
4Mb / 480P
   Microcontrollers
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com