MC9S08GT32CFDER Freescale Semiconductor, MC9S08GT32CFDER Datasheet - Page 145
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MC9S08GT32CFDER
Manufacturer Part Number
MC9S08GT32CFDER
Description
IC MCU 32K FLASH 2K RAM 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheet
1.M68EVB908GB60E.pdf
(290 pages)
Specifications of MC9S08GT32CFDER
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-QFN
For Use With
M68DEMO908GB60E - BOARD DEMO MC9S08GB60M68EVB908GB60E - BOARD EVAL FOR MC9S08GB60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
- Current page: 145 of 290
- Download datasheet (2Mb)
Chapter 9 Keyboard Interrupt (KBI) Module
9.1
The MC9S08GB/GT has one KBI module with eight keyboard interrupt inputs that share port A pins. See
Chapter 2, “Pins and
pins.
9.1.1
The following paragraphs discuss controlling the keyboard interrupt pins.
Port A is an 8-bit port which is shared among the KBI keyboard interrupt inputs and general-purpose I/O.
The eight KBIPEn control bits in the KBIPE register allow selection of any combination of port A pins to
be assigned as KBI inputs. Any pins which are enabled as KBI inputs will be forced to act as inputs and
the remaining port A pins are available as general-purpose I/O pins controlled by the port A data (PTAD),
data direction (PTADD), and pullup enable (PTAPE) registers.
KBI inputs can be configured for edge-only sensitivity or edge-and-level sensitivity. Bits 3 through 0 of
port A are falling-edge/low-level sensitive while bits 7 through 4 can be configured for
rising-edge/high-level or for falling-edge/low-level sensitivity.
The eight PTAPEn control bits in the PTAPE register allow you to select whether an internal pullup device
is enabled on each port A pin that is configured as an input. When any of bits 7 through 4 of port A are
enabled as KBI inputs and are configured to detect rising edges/high levels, the pullup enable bits enable
pulldown rather than pullup devices.
An enabled keyboard interrupt can be used to wake the MCU from wait or standby (stop3).
9.2
The keyboard interrupt (KBI) module features include:
Freescale Semiconductor
•
Keyboard interrupts selectable on eight port pins:
— Four falling-edge/low-level sensitive
— Four falling-edge/low-level or rising-edge/high-level sensitive
— Choice of edge-only or edge-and-level sensitivity
— Common interrupt flag and interrupt enable control
— Capable of waking up the MCU from stop3 or wait mode
Introduction
Features
Port A and Keyboard Interrupt Pins
MCU Pin:
Connections” for more information about the logic and hardware aspects of these
KBI1P7
PTA7/
MC9S08GB/GT Data Sheet, Rev. 2.3
KBI1P6
PTA6/
Figure 9-1. Port A Pin Names
KBI1P5
PTA5/
KBI1P4
PTA4/
KBI1P3
PTA3/
KBI1P2
PTA2/
KBI1P1
PTA1/
KBI1P0
PTA0/
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