MC68HC908AP64CB Freescale Semiconductor, MC68HC908AP64CB Datasheet - Page 282

• Manufacturer Part Number: MC68HC908AP64CB
• Description: IC MCU 64K FLASH 8MHZ 42SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AP64CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, IRSCI, SCI, SPI
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 30
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K 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)
• For Use With: DEMO908AP64E - BOARD DEMO FOR 908AP64DEMO908AP64 - BOARD DEMO FOR 908AP64
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Keyboard Interrupt Module (KBI)
KEYF — Keyboard Flag Bit
ACKK — Keyboard Acknowledge Bit
IMASKK — Keyboard Interrupt Mask Bit
MODEK — Keyboard Triggering Sensitivity Bit
18.5.2 Keyboard Interrupt Enable Register
The port-D keyboard interrupt enable register enables or disables each port-D pin to operate as a
keyboard interrupt pin.
KBIE7–KBIE0 — Keyboard Interrupt Enable Bits
280
This read-only bit is set when a keyboard interrupt is pending. Reset clears the KEYF bit.
Writing a logic 1 to this write-only bit clears the keyboard interrupt request. ACKK always reads as
logic 0. Reset clears ACKK.
Writing a logic 1 to this read/write bit prevents the output of the keyboard interrupt mask from
generating interrupt requests. Reset clears the IMASKK bit.
This read/write bit controls the triggering sensitivity of the keyboard interrupt pins. Reset clears
MODEK.
Each of these read/write bits enables the corresponding keyboard interrupt pin to latch interrupt
requests. Reset clears the keyboard interrupt enable register.
1 = Keyboard interrupt pending
0 = No keyboard interrupt pending
1 = Keyboard interrupt requests masked
0 = Keyboard interrupt requests not masked
1 = Keyboard interrupt requests on falling edges and low levels
0 = Keyboard interrupt requests on falling edges only
1 = KBIx pin enabled as keyboard interrupt pin
0 = KBIx pin not enabled as keyboard interrupt pin
Address:
Address:
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 18-3. Keyboard Status and Control Register (KBSCR)
Figure 18-4. Keyboard Interrupt Enable Register (KBIER)
$001A
$001B
KBIE7
Bit 7
Bit 7
0
0
0
= Unimplemented
KBIE6
6
0
0
6
0
MC68HC908AP Family Data Sheet, Rev. 4
KBIE5
5
0
0
5
0
KBIE4
4
0
0
4
0
KBIE3
KEYF
3
0
3
0
KBIE2
ACKK
2
0
0
2
0
IMASKK
KBIE1
1
0
1
0
Freescale Semiconductor
MODEK
KBIE0
Bit 0
Bit 0
0
0