mc68hc908qf4 Freescale Semiconductor, Inc, mc68hc908qf4 Datasheet - Page 24

• Manufacturer Part Number: mc68hc908qf4
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Memory
Data Sheet
24
$000C
$000D
$001C
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$000A
$000B
$0019
$001A
$001B
Addr.
↓
↓
↓
Port A Input Pullup Enable
Port B Input Pullup Enable
Control Register (KBSCR)
Data Direction Register A
Data Direction Register B
Enable Register (KBIER)
Register Name
Keyboard Status and
Port A Data Register
Port B Data Register
Register (PTAPUE)
Register (PTBPUE)
Keyboard Interrupt
Unimplemented
Unimplemented
Unimplemented
Unimplemented
See page 112.
See page 115.
See page 113.
See page 115.
See page 114.
See page 116.
See page 84.
See page 85.
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 5)
(DDRA)
(DDRB)
(PTA)
(PTB)
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
PTBPUE7
OSC2EN
DDRB7
PTB7
Bit 7
R
R
0
0
0
0
0
0
0
0
Go to: www.freescale.com
= Unimplemented
PTBPUE6
DDRB6
AWUIE
AWUL
PTB6
R
6
0
0
0
0
0
0
0
0
Memory
PTAPUE5
PTBPUE5
DDRA5
DDRB5
KBIE5
PTA5
PTB5
5
0
0
0
0
0
0
0
UNAFFECTED BY RESET
PTAPUE4
PTBPUE4
DDRA4
DDRB4
Unaffected by reset
KBIE4
PTA4
PTB4
R
4
0
0
0
0
0
0
0
= Reserved
PTAPUE3
PTBPUE3
DDRA3
DDRB3
KBIE3
PTA3
PTB3
KEYF
3
0
0
0
0
0
0
PTAPUE2
PTBPUE2
DDRB2
KBIE2
ACKK
PTA2
PTB2
U = Unaffected
MC68HC908QF4 — Rev. 1.0
2
0
0
0
0
0
0
0
0
PTAPUE1
PTBPUE1
IMASKK
DDRA1
DDRB1
KBIE1
PTA1
PTB1
1
0
0
0
0
0
0
MOTOROLA
PTAPUE0
PTBPUE0
MODEK
DDRA0
DDRB0
KBIE0
PTA0
PTB0
Bit 0
0
0
0
0
0
0