MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 167

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• 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: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

Chapter 13
Keyboard Interrupt Module (KBI)
13.1 Introduction
The keyboard interrupt module (KBI) provides eight independently maskable external interrupts which are
accessible via PTA0–PTA7. When a port pin is enabled for keyboard interrupt function, an internal pull-up
device is also enabled on the pin.
13.2 Features
Features of the keyboard interrupt module include the following:
13.3 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.
•
•
•
•
1. PTA6/KBI6 is only available when OSCSEL=0 at $FFD0 (RC option), and PTA6EN=1 at $000D.
Eight keyboard interrupt pins with pull-up devices
Separate keyboard interrupt enable bits and one keyboard interrupt mask
Programmable edge-only or edge- and level- interrupt sensitivity
Exit from low-power modes
Generic Pin Name
Register Name
Keyboard Status and
Table
Keyboard Interrupt
KBI0–KBI5
Control Register
Enable Register
KBI6
KBI7
KBI
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
13-1. The generic pin name appear in the text that follows.
(KBSCR)
(KBIER)
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 13-1. KBI I/O Register Summary
Table 13-1. Pin Name Conventions
KBIE7
Bit 7
0
0
0
OSC2/RCCLK/PTA6/KBI6
PTA0/KBI0–PTA5/KBI5
Full MCU Pin Name
PTA7/KBI7
KBIE6
= Unimplemented
6
0
0
0
KBIE5
5
0
0
0
(1)
KBIE4
4
0
0
0
Pin Selected for KBI Function by KBIEx
KBIE3
KEYF
3
0
0
KBIE0–KBIE5
Bit in KBIER
KBIE6
KBIE7
KBIE2
ACKK
2
0
0
0
IMASKK
KBIE1
1
0
0
MODEK
KBIE0
Bit 0
0
0
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