MC68HC908KX2CP Freescale Semiconductor, MC68HC908KX2CP Datasheet - Page 95

• Manufacturer Part Number: MC68HC908KX2CP
• Description: IC MCU 2K FLASH 8MHZ SCI 16-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908KX2CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Chapter 9
Keyboard Interrupt Module (KBI)
9.1 Introduction
The keyboard interrupt module (KBI) provides five independently maskable external interrupt pins.
9.2 Features
KBI features include:
Freescale Semiconductor
TO PULLUP
TO PULLUP
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•
•
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ENABLE
ENABLE
or KBD3
KBD0
KBD4
Five keyboard interrupt pins, on the MC68HC08KX8, are with separate keyboard interrupt enable
bits and one keyboard interrupt mask
Hysteresis buffers
Programmable edge-only or edge- and level-interrupt sensitivity
Automatic interrupt acknowledge
Exit from low-power modes
KB4IE or KB3IE
KB0IE
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
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Figure 9-1. Keyboard Module Block Diagram
MODEK
V
DD
D
CK
CLR
Q
INTERRUPT FF
KEYBOARD
RESET
ACKK
IMASKK
SYNCHRONIZER
VECTOR FETCH
INTERNAL BUS
DECODER
KEYF
KEYBOARD
INTERRUPT
REQUEST
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