mc9s08lc60 Freescale Semiconductor, Inc, mc9s08lc60 Datasheet - Page 95

• Manufacturer Part Number: mc9s08lc60
• Description: Hcs08 Microcontrollers 8-bit Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 7
Keyboard Interrupt (S08KBIV2)
7.1
Introduction
This on-chip peripheral module is called a keyboard interrupt (KBI) module because originally it was
designed to simplify the connection and use of row-column matrices of keyboard switches. However, these
inputs are also useful as extra external interrupt inputs and as an external means of waking up the MCU
from stop or wait low-power modes.
The KBI module allows up to eight pins to act as additional interrupt sources. These pins can be configured
for either rising-edge sensing or falling-edge sensing. The sensing mode for all eight pins can also be
modified to detect edges and levels instead of only edges.
MC9S08LC60 Series MCUs have two KBIs. When they are described individually, they are called KBI1
and/or KBI2. When referring to the module in general or both KBIs collectively, they are called KBIx.
Figure 7-1
Shows the MC9S08LC60 Series block guide with the KBIs highlighted.
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
Freescale Semiconductor
95