參數資料
型號: MC68HC05L16CFU
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, QFP-80
文件頁數: 69/146頁
文件大?。?/td> 852K
代理商: MC68HC05L16CFU
Option Map for I/O Configurations
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
Freescale Semiconductor
29
2.4 Option Map for I/O Configurations
Most of the I/O configurations are done in the option map (Figure 2-4). Some options still remain as mask
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 Figure 2-4.
$0031
LCD Data Register 17
(LCDR17)
Read:
F33B3
F33B2
F33B1
F33B0
F32B3
F32B2
F32B1
F32B0
Write:
Reset:
Unaffected by reset
$0032
LCD Data Register 18
(LCDR18)
Read:
F35B3
F35B2
F35B1
F35B0
F34B3
F34B2
F34B1
F34B0
Write:
Reset:
Unaffected by reset
$0033
LCD Data Register 19
(LCDR19)
Read:
F37B3
F37B2
F37B1
F37B0
F36B3
F36B2
F36B1
F36B0
Write:
Reset:
Unaffected by reset
$0034
LCD Data Register 20
(LCDR20)
Read:
0
F38B3
F38B2
F38B1
F38B0
Write:
Reset:
Unaffected by reset
$0035
Reserved
RRRR
$003D
Reserved
RRRR
$003E
Miscellaneous Register
(MISC)
Read:
FTUP
STUP
0
SYS1
SYS0
FOSCE
OPTM
Write:
Reset:
*
001
010
$003F
Reserved
RRRR
* Unaffected by reset but initialized by power-on reset
Addr.
Register Name
Bit 7
6543
21
Bit 0
= Unimplemented
R
= Reserved
U = Unaffected
Figure 2-3. Main I/O Map (Sheet 5 of 5)
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