MC908QL4 FREESCALE [Freescale Semiconductor, Inc], MC908QL4 Datasheet - Page 27

• Manufacturer Part Number: MC908QL4
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Freescale Semiconductor
$000C
$000D
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$000A
$000B
$0019
$001A
$001B
Addr.
↓
↓
↓
Enable Register (PTAPUE)
Port B Input Pullup Enable
Control Register (KBSCR)
Data Direction Register A
Data Direction Register B
Port A Input Pullup/Down
Enable Register (KBIER)
Register Name
Keyboard Status and
Port A Data Register
Port B Data Register
Register (PTBPUE)
Keyboard Interrupt
See page 112.
See page 114.
See page 112.
See page 115.
See page 113.
See page 116.
See page 94.
See page 95.
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
Reserved
Reserved
Reserved
(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:
PTBPUE7
OSC2EN
DDRB7
PTB7
Bit 7
U
MC68HC908QL4 Data Sheet, Rev. 7
0
0
0
0
0
0
0
0
0
0
= Unimplemented
PTBPUE6
DDRB6
AWUIE
AWUL
PTB6
6
0
0
0
0
0
0
0
0
0
0
PTAPUE5
PTBPUE5
DDRA5
DDRB5
KBIE5
PTA5
PTB5
U
5
0
0
0
0
0
0
0
PTAPUE4
PTBPUE4
DDRA4
DDRB4
KBIE4
Unaffected by reset
PTA4
PTB4
U
R
4
0
0
0
0
0
0
0
= Reserved
PTAPUE3
PTBPUE3
DDRA3
DDRB3
KBIE3
PTA3
PTB3
KEYF
U
3
0
0
0
0
0
0
PTAPUE2
PTBPUE2
DDRB2
KBIE2
ACKK
PTA2
PTB2
U = Unaffected
U
2
0
0
0
0
0
0
0
0
Direct Page Registers
PTAPUE1
PTBPUE1
IMASKK
DDRA1
DDRB1
KBIE1
PTA1
PTB1
U
1
0
0
0
0
0
0
PTAPUE0
PTBPUE0
MODEK
DDRA0
DDRB0
KBIE0
PTA0
PTB0
Bit 0
U
0
0
0
0
0
0
27