s908qc16g0cdte Freescale Semiconductor, Inc, s908qc16g0cdte Datasheet - Page 72

• Manufacturer Part Number: s908qc16g0cdte
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

External Interrupt (IRQ)
When set, the IMASK bit in INTSCR masks the IRQ interrupt request. A latched interrupt request is not
presented to the interrupt priority logic unless IMASK is clear.
A falling edge on the IRQ pin can latch an interrupt request into the IRQ latch. An IRQ vector fetch,
software clear, or reset clears the IRQ latch.
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PTA0/TCH0/AD0//KBI0
PTA4/OSC2/AD2/KBI4
PTA5/OSC1/AD3/KBI5
RST, IRQ: Pins have internal pull up device
All port pins have programmable pull up device
PTA[0:5]: Higher current sink and source capability
PTB[0:7]: Not available on 8-pin devices
PTA2/IRQ/KBI2/TCLK
PTA1/TCH1/AD1/KBI1
PTA3/RST/KBI3
PTB0/AD4
PTB1/AD5
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including the IRQ interrupt request.
PTB2
PTB3
PTB4
PTB5
PTB6
PTB7
POWER SUPPLY
MC68HC08QY4
128 BYTES
USER RAM
Figure 8-1. Block Diagram Highlighting IRQ Block and Pin
MC68HC08QY/QT Family Data Sheet, Rev. 2
V
V
DD
SS
NOTE
MC68HC08QY4
M68HC08 CPU
4096 BYTES
USER ROM
DEVELOPMENT SUPPORT
KEYBOARD INTERRUPT
SINGLE INTERRUPT
2-CHANNEL 16-BIT
BREAK MODULE
TIMER MODULE
AUTO WAKEUP
LOW-VOLTAGE
MONITOR ROM
Freescale Semiconductor
GENERATOR
6-CHANNEL
10-BIT ADC
MODULE
MODULE
MODULE
MODULE
CLOCK
INHIBIT
COP