MC68HC908JK3CDW Freescale Semiconductor, MC68HC908JK3CDW Datasheet - Page 168

• Manufacturer Part Number: MC68HC908JK3CDW
• Description: IC MCU 8MHZ 4K FLASH 20-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JK3CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

Keyboard Interrupt Module (KBI)
14.4 Functional Description
Technical Data
166
KBI0
KBI6
Addr.
TO PULLUP ENABLE
TO PULLUP ENABLE
$001A
$001B
Keyboard Interrupt Enable
KBIE0
KBIE6
Register Name
and Control Register
Register (KBIER)
Keyboard Status
.
.
.
(KBSCR)
Figure 14-2. Keyboard Interrupt Block Diagram
Writing to the KBIE6–KBIE0 bits in the keyboard interrupt enable register
independently enables or disables each port A pin as a keyboard
interrupt pin. Enabling a keyboard interrupt pin in port A also enables its
internal pull-up device irrespective of PTAPUEx bits in the port A input
pull-up enable register (see 12.4.2). A logic 0 applied to an enabled
keyboard interrupt pin latches a keyboard interrupt request.
Reset:
Reset:
Read:
Write:
Read:
Write:
Figure 14-1. KBI I/O Register Summary
Bit 7
0
0
0
0
Keyboard Interrupt Module (KBI)
MODEK
V
= Unimplemented
DD
KBIE6
6
0
0
0
D
CK
CLR
Q
KBIE5
5
0
0
0
INTERRUPT FF
KEYBOARD
KBIE4
4
0
0
0
RESET
ACKK
KBIE3
KEYF
3
0
0
VECTOR FETCH
INTERNAL BUS
MC68H(R)C908JL3
DECODER
IMASKK
ACKK
KBIE2
SYNCHRONIZER
Freescale Semiconductor
2
0
0
0
IMASKK
KBIE1
1
0
0
KEYF
—
MODEK
Rev. 1.1
KBIE0
Bit 0
Keyboard
Interrupt
Request
0
0