MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 172
MC68HC908GR8CDW
Manufacturer Part Number
MC68HC908GR8CDW
Description
IC MCU 8K FLASH 8MHZ 28-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908GR4CFAE.pdf
(408 pages)
Specifications of MC68HC908GR8CDW
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
17
Program Memory Size
7.5KB (7.5K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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External Interrupt (IRQ)
12.7 IRQ Status and Control Register
Technical Data
172
Address:
The IRQ status and control register (INTSCR) controls and monitors
operation of the IRQ module. The INTSCR:
IRQF — IRQ Flag Bit
ACK — IRQ Interrupt Request Acknowledge Bit
IMASK — IRQ Interrupt Mask Bit
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
•
•
•
•
This read-only status bit is high when the IRQ interrupt is pending.
Writing a logic 1 to this write-only bit clears the IRQ latch. ACK always
reads as logic 0. Reset clears ACK.
Writing a logic 1 to this read/write bit disables IRQ interrupt requests.
Reset clears IMASK.
For More Information On This Product,
Figure 12-3. IRQ Status and Control Register (INTSCR)
1 = IRQ interrupt pending
0 = IRQ interrupt not pending
1 = IRQ interrupt requests disabled
0 = IRQ interrupt requests enabled
Shows the state of the IRQ flag
Clears the IRQ latch
Masks IRQ interrupt request
Controls triggering sensitivity of the IRQ1 interrupt pin
$001D
Bit 7
0
Go to: www.freescale.com
External Interrupt (IRQ)
= Unimplemented
6
0
5
0
4
0
IRQF
3
0
MC68HC908GR8 — Rev 4.0
ACK
2
0
0
IMASK
1
0
MOTOROLA
MODE
Bit 0
0
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