DEMO9S08LIN Freescale, DEMO9S08LIN Datasheet - Page 97

• Manufacturer Part Number: DEMO9S08LIN
• Manufacturer: Freescale

Specifications of DEMO9S08LIN

• Lead Free Status / RoHS Status: Compliant

7.1.1
The KBI features include:
7.1.2
This section defines the KBI operation in wait, stop, and background debug modes.
7.1.2.1
The KBI continues to operate in wait mode if enabled before executing the WAIT instruction. Therefore,
an enabled KBI pin (KBPEx = 1) can be used to bring the MCU out of wait mode if the KBI interrupt is
enabled (KBIE = 1).
7.1.2.2
The KBI operates asynchronously in stop3 mode if enabled before executing the STOP instruction.
Therefore, an enabled KBI pin (KBPEx = 1) can be used to bring the MCU out of stop3 mode if the KBI
interrupt is enabled (KBIE = 1).
During either stop1 or stop2 mode, the KBI is disabled. In some systems, the pins associated with the KBI
may be sources of wakeup from stop1 or stop2, see the stop modes section in the
chapter. Upon wake-up from stop1 or stop2 mode, the KBI module will be in the reset state.
7.1.2.3
When the microcontroller is in active background mode, the KBI will continue to operate normally.
7.1.3
The block diagram for the keyboard interrupt module is shown
Freescale Semiconductor
•
•
•
•
Up to eight keyboard interrupt pins with individual pin enable bits.
Each keyboard interrupt pin is programmable as falling edge (or rising edge) only, or both falling
edge and low level (or both rising edge and high level) interrupt sensitivity.
One software enabled keyboard interrupt.
Exit from low-power modes.
Features
Modes of Operation
Block Diagram
KBI in Wait Mode
KBI in Stop Modes
KBI in Active Background Mode
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
Figure
7-2.
Chapter 7 Keyboard Interrupt (S08KBIV2)
Modes of Operation
97