MC9S08QG8CDTER Freescale, MC9S08QG8CDTER Datasheet - Page 69
MC9S08QG8CDTER
Manufacturer Part Number
MC9S08QG8CDTER
Description
Manufacturer
Freescale
Datasheet
1.MC9S08QG8CDTER.pdf
(314 pages)
Specifications of MC9S08QG8CDTER
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
I2C/SCI/SPI
Total Internal Ram Size
512Byte
# I/os (max)
12
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
1.8V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
16
Package Type
TSSOP
Program Memory Type
Flash
Program Memory Size
8KB
Lead Free Status / RoHS Status
Compliant
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1
5.8.1
This direct page register includes status and control bits, which are used to configure the IRQ function,
report status, and acknowledge IRQ events.
Freescale Semiconductor
Bit 5 is a reserved bit that must always be written to 0.
IRQMOD
IRQPDD
IRQACK
Reset
IRQPE
IRQIE
Field
IRQF
6
4
3
2
1
0
W
R
Interrupt Pin Request Status and Control Register (IRQSC)
Interrupt Request (IRQ) Pull Device Disable — This read/write control bit is used to disable the internal pullup
device when the IRQ pin is enabled (IRQPE = 1) allowing for an external device to be used.
0 IRQ pull device enabled if IRQPE = 1.
1 IRQ pull device disabled if IRQPE = 1.
IRQ Pin Enable — This read/write control bit enables the IRQ pin function. When this bit is set the IRQ pin can
be used as an interrupt request.
0 IRQ pin function is disabled.
1 IRQ pin function is enabled.
IRQ Flag — This read-only status bit indicates when an interrupt request event has occurred.
0 No IRQ request.
1 IRQ event detected.
IRQ Acknowledge — This write-only bit is used to acknowledge interrupt request events (write 1 to clear IRQF).
Writing 0 has no meaning or effect. Reads always return 0. If edge-and-level detection is selected (IRQMOD = 1),
IRQF cannot be cleared while the IRQ pin remains at its asserted level.
IRQ Interrupt Enable — This read/write control bit determines whether IRQ events generate an interrupt
request.
0 Interrupt request when IRQF set is disabled (use polling).
1 Interrupt requested whenever IRQF = 1.
IRQ Detection Mode — This read/write control bit selects either edge-only detection or edge-and-level
detection. See
0 IRQ event on falling edges only.
1 IRQ event on falling edges and low levels.
0
0
7
Figure 5-2. Interrupt Request Status and Control Register (IRQSC)
= Unimplemented or Reserved
IRQPDD
Section 5.5.2.2, “Edge and Level
0
6
Table 5-3. IRQSC Register Field Descriptions
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
5
0
0
1
IRQPE
0
4
Sensitivity,” for more details.
Description
Chapter 5 Resets, Interrupts, and General System Control
IRQF
3
0
IRQACK
0
0
2
IRQIE
0
1
IRQMOD
0
0
67
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