參數(shù)資料
型號: MC68HC05PD6
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, TQFP-80
文件頁數(shù): 120/165頁
文件大小: 841K
代理商: MC68HC05PD6
GENERAL RELEASE SPECIFICATION
July 7, 1997
MOTOROLA
INPUT/OUTPUT PORTS
MC68HC05PD6
7-8
REV 1.1
RBH – Port B pull up Resistor (H)
When this bit is set, pull up resistors are connected to the upper 4 bits of Port B
pins. This bit is cleared on reset.
RBL– Port B pull up Resistor (L)
When this bit is set, pull up resistors are connected to the lower 4 bits of Port B
pins. This bit is cleared on reset.
RAH – Port A pull up Resistor (H)
When this bit is set, pull up resistors are connected to the upper 4 bits of Port A
pins. This bit is cleared on reset.
RAL – Port A pull up Resistor (L)
When this bit is set, pull up resistors are connected to the lower 4 bits of Port A
pins. This bit is cleared on reset.
The typical resistor values are 200K
at V
DD=3V for both Port A and Port B. When
a pin outputs a low level, the pull-up resistor is disconnected regardless of pull-up
enable state.
7.8.2 Resistor Control Register 2 (RCR2)
RC
x – Port C pull up Resistor (Bit x)
When RC
x bit is set, pull up resistor is connected to the corresponding bit of
Port C pin. This bit is cleared on reset.
The typical resistor values are 200K
at V
DD=3V.
7.8.3 Open Drain Output Control Register 1 (WOM1)
DWOMH – Port D Open Drain Mode (H)
When this bit is set, the upper 4 bits of Port D are congured as open drain
outputs if these bits are selected as Port D output by the PDM
x bits in the
PDMUX. This bit is cleared on reset.
W
R
RCR1
$0009
reset
RC7
0
7
00
54
0
0000
6
3210
RC6
RC3
RC2
RC1
RC0
RC5
RC4
option
map
W
R
WOM1
$000A
reset
DWOMH
0
7
00
54
0
0000
6
3210
DWOML
0
AWOMH
AWOML
EWOMH
EWOML
option
map
0
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