MC9S08QG4MPAE Freescale Semiconductor, MC9S08QG4MPAE Datasheet - Page 65

• Manufacturer Part Number: MC9S08QG4MPAE
• Description: IC MCU 4K FLASH 8-PDIP
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08QG4MPAE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Controller Family/series: HCS08
• No. Of I/o's: 6
• Ram Memory Size: 256Byte
• Cpu Speed: 20MHz
• No. Of Timers: 2
• Embedded Interface Type: I2C, SCI, SPI
• Rohs Compliant: Yes
• Processor Series: S08QG
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMO9S08QG8E
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

The IRQ pin, when enabled, defaults to use an internal pullup device (IRQPDD = 0). If the user desires to
use an external pullup, the IRQPDD can be written to a 1 to turn off the internal device.
BIH and BIL instructions may be used to detect the level on the IRQ pin when the pin is configured to act
as the IRQ input.
5.5.2.2
The IRQMOD control bit reconfigures the detection logic so it detects edge events and pin levels. In this
edge detection mode, the IRQF status flag becomes set when an edge is detected (when the IRQ pin
changes from the deasserted to the asserted level), but the flag is continuously set (and cannot be cleared)
as long as the IRQ pin remains at the asserted level.
5.5.3
Table 5-2
bottom of the table. The high-order byte of the address for the interrupt service routine is located at the
first address in the vector address column, and the low-order byte of the address for the interrupt service
routine is located at the next higher address.
When an interrupt condition occurs, an associated flag bit becomes set. If the associated local interrupt
enable is 1, an interrupt request is sent to the CPU. Within the CPU, if the global interrupt mask (I bit in
the CCR) is 0, the CPU will finish the current instruction; stack the PCL, PCH, X, A, and CCR CPU
registers; set the I bit; and then fetch the interrupt vector for the highest priority pending interrupt.
Processing then continues in the interrupt service routine.
Freescale Semiconductor
provides a summary of all interrupt sources. Higher-priority sources are located toward the
Interrupt Vectors, Sources, and Local Masks
Edge and Level Sensitivity
This pin does not contain a clamp diode to V
above V
The voltage measured on the internally pulled-up IRQ pin will not be pulled
to V
pullup should not be used to pull up components external to the MCU. The
internal gates connected to this pin are pulled all the way to V
DD
. The internal gates connected to this pin are pulled to V
DD
.
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
NOTE
Chapter 5 Resets, Interrupts, and General System Control
DD
and should not be driven
DD
DD
. The IRQ
.
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