MC68HC908AP8CB Freescale Semiconductor, MC68HC908AP8CB Datasheet - Page 279
MC68HC908AP8CB
Manufacturer Part Number
MC68HC908AP8CB
Description
IC MCU 8K FLASH 8MHZ 42SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AP8CFBE.pdf
(324 pages)
Specifications of MC68HC908AP8CB
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Chapter 18
Keyboard Interrupt Module (KBI)
18.1 Introduction
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.
18.2 Features
Features of the keyboard interrupt module include the following:
18.3 I/O Pins
The eight keyboard interrupt pins are shared with standard port I/O pins. The full name of the KBI pins
are listed in
Freescale Semiconductor
$001A
$001B
Addr.
•
•
•
•
Eight keyboard interrupt pins with pullup devices
Separate keyboard interrupt enable bits and one keyboard interrupt mask
Programmable edge-only or edge- and level- interrupt sensitivity
Exit from low-lower modes
Keyboard Interrupt Enable
Generic Pin Name
Register Name
Table
and Control Register
KBI0–KBI7
Keyboard Status
KBI
18-1. The generic pin name appear in the text that follows.
(KBSCR)
Register
(KBIER)
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 18-1. KBI I/O Register Summary
Table 18-1. Pin Name Conventions
MC68HC908AP Family Data Sheet, Rev. 4
KBIE7
Bit 7
0
0
0
PTD0/KBI0–PTD7/KBI7
Full MCU Pin Name
= Unimplemented
KBIE6
6
0
0
0
KBIE5
5
0
0
0
KBIE4
4
0
0
0
Pin Selected for KBI Function by KBIEx
KBIE3
KEYF
3
0
0
KBIE0–KBIE7
Bit in KBIER
KBIE2
ACKK
2
0
0
0
IMASKK
KBIE1
1
0
0
MODEK
KBIE0
Bit 0
0
0
277
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