mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 341
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mc68hc908sr12
Manufacturer Part Number
mc68hc908sr12
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908SR12.pdf
(404 pages)
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19.7.2 IRQ2 Status and Control Register
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Address:
IMASK1 — IRQ1 Interrupt Mask Bit
MODE1 — IRQ1 Edge/Level Select Bit
The IRQ2 status and control register (INTSCR2) controls and monitors
operation of IRQ2. The INTSCR2 has the following functions:
PTBPUE6 — IRQ2 Pin Pullup Enable Bit.
Reset:
Read:
Write:
Writing a logic 1 to this read/write bit disables IRQ1 interrupt requests.
Reset clears IMASK1.
This read/write bit controls the triggering sensitivity of the IRQ1 pin.
Reset clears MODE1.
•
•
•
•
•
Setting this bit to logic 1 disables the pullup on PTB6/IRQ2 pin.
Reset clears this bit.
Figure 19-5. IRQ2 Status and Control Register (INTSCR2)
1 = IRQ1 interrupt requests disabled
0 = IRQ1 interrupt requests enabled
1 = IRQ1 interrupt requests on falling edges and low levels
0 = IRQ1 interrupt requests on falling edges only
1 = IRQ2 pin internal pull-up is disabled
0 = IRQ2 pin internal pull-up is enabled
Enables/disables the internal pullup device on IRQ2 pin
Shows the state of the IRQ2 flag
Clears the IRQ2 latch
Masks IRQ2 interrupt request
Controls triggering sensitivity of the IRQ2 interrupt pin
$001C
Bit 7
0
0
External Interrupt (IRQ)
PTBPUE6
= Unimplemented
6
0
5
0
0
4
0
0
IRQ2F
3
0
ACK2
2
0
0
External Interrupt (IRQ)
IMASK2
1
0
IRQ Registers
Data Sheet
MODE2
Bit 0
0
341
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