mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 343

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

20.1 Contents
20.2 Introduction
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Data Sheet — MC68HC908SR12•MC68HC08SR12
Section 20. Keyboard Interrupt Module (KBI)
20.2
20.3
20.4
20.5
20.5.1
20.6
20.6.1
20.6.2
20.7
20.7.1
20.7.2
20.10 Keyboard Module During Break Interrupts . . . . . . . . . . . . . . . 350
The keyboard interrupt module (KBI) provides eight independently
maskable external interrupts which are accessible via PTD0–PTD7.
When a port pin is enabled for keyboard interrupt function, an internal
30kΩ pullup device is also enabled on the pin.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .345
Keyboard Interrupt Registers . . . . . . . . . . . . . . . . . . . . . . . . . 347
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Keyboard Status and Control Register. . . . . . . . . . . . . . . . 348
Keyboard Interrupt Enable Register . . . . . . . . . . . . . . . . . . 349
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .349
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .349
Keyboard Interrupt Module (KBI)
Data Sheet
343