MC908QL4MDWE Freescale Semiconductor, MC908QL4MDWE Datasheet - Page 86

• Manufacturer Part Number: MC908QL4MDWE
• Description: IC MCU 8BIT 4K FLASH 16-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908QL4MDWE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: LIN (Local Interconnect Network)
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

External Interrupt (IRQ)
8.4 Interrupts
The following IRQ source can generate 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 BFCR in the SIM section of this data
To allow software to clear status bits during a break interrupt, write a 1 to BCFE. 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 does not share its pin with any module on this MCU.
8.7.1 IRQ Input Pins (IRQ)
The IRQ pin provides a maskable external interrupt source. The IRQ pin contains an internal pullup
device.
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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.
MC68HC908QL4 Data Sheet, Rev. 8
sheet.
Freescale Semiconductor