MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 279

• Manufacturer Part Number: MC908AP32CFBE
• Manufacturer: Freescale

Specifications of MC908AP32CFBE

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI/SPI
• Total Internal Ram Size: 2KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PQFP
• Program Memory Type: Flash
• Program Memory Size: 32KB
• Lead Free Status / RoHS Status: Compliant

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
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