MCMC68HC05L16 Freescale Semiconductor, Inc, MCMC68HC05L16 Datasheet - Page 29

• Manufacturer Part Number: MCMC68HC05L16
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

2.4 Option Map for I/O Configurations
Most of the I/O configurations are done in the option map
options for the MC68HC05L16 such as a pullup resistor for the RESET pin and resistors for the
OSC1/OSC2 and XOSC1/XOSC2 pins. These mask options may be read by the MOSR ($000F) in the
option map.
The option map is located at $0000–$000F of the main memory map and it is available when the OPTM
bit in the MISC register ($003E) is set. Main registers at $0000–$000F are not available when OPTM = 1.
I/O port data direction registers are contained in the option map in
Freescale Semiconductor
$003D
$003E
$003F
$0031
$0032
$0033
$0034
$0035
Addr.
↓
Miscellaneous Register
LCD Data Register 17
LCD Data Register 18
LCD Data Register 19
LCD Data Register 20
Register Name
See page 101.
See page 101.
See page 101.
See page 101.
See page 67.
(LCDR17)
(LCDR18)
(LCDR19)
(LCDR20)
Reserved
Reserved
Reserved
(MISC)
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
Figure 2-3. Main I/O Map (Sheet 5 of 5)
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
* Unaffected by reset but initialized by power-on reset
F33B3
F35B3
F37B3
FTUP
Bit 7
R
R
R
0
*
= Unimplemented
F33B2
F35B2
F37B2
STUP
R
R
R
6
0
*
F33B1
F35B1
F37B1
(Figure
R
R
R
5
0
0
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
F33B0
F35B0
F37B0
2-4). Some options still remain as mask
R
R
R
R
4
0
0
0
Figure
= Reserved
F32B3
F34B3
F36B3
F38B3
SYS1
2-4.
Option Map for I/O Configurations
R
R
R
3
1
F32B2
F34B2
F36B2
F38B2
SYS0
R
R
R
2
0
U = Unaffected
FOSCE
F32B1
F34B1
F36B1
F38B1
R
R
R
1
1
F32B0
F34B0
F36B0
F38B0
OPTM
Bit 0
R
R
R
0
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