參數(shù)資料
型號(hào): MC68HC711E20VFN2
廠商: MOTOROLA INC
元件分類(lèi): 微控制器/微處理器
英文描述: Filter Module
中文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQCC52
封裝: PLASTIC, LCC-52
文件頁(yè)數(shù): 111/268頁(yè)
文件大?。?/td> 3696K
代理商: MC68HC711E20VFN2
Parallel Input/Output (I/O) Ports
Port B
M68HC11E Family — Rev. 5
Data Sheet
MOTOROLA
Parallel Input/Output (I/O) Ports
For More Information On This Product,
Go to: www.freescale.com
111
6.3 Port B
In single-chip or bootstrap modes, port B pins are general-purpose outputs. In
expanded or special test modes, port B pins are high-order address outputs.
6.4 Port C
In single-chip and bootstrap modes, port C pins reset to high-impedance inputs.
(DDRC bits are set to 0.) In expanded and special test modes, port C pins are
multiplexed address/data bus and the port C register address is treated as an
external memory location.
Address:
$1004
Bit 7
6
5
4
3
2
1
Bit 0
Single-chip or bootstrap modes:
Read:
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Write:
Reset:
0
0
0
0
0
0
0
0
Expanded or special test modes:
Read:
ADDR15
ADDR14
ADDR13
ADDR12
ADDR11
ADDR10
ADDR9
ADDR8
Write:
Reset:
0
0
0
0
0
0
0
0
Figure 6-3. Port B Data Register (PORTB)
Address:
$1003
Bit 7
6
5
4
3
2
1
Bit 0
Single-chip or bootstrap modes:
Read:
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Write:
Reset:
Indeterminate after reset
Expanded or special test modes:
Read:
ADDR7
DATA7
ADDR6
DATA6
ADDR5
DATA5
ADDR4
DATA4
ADDR3
DATA3
ADDR2
DATA2
ADDR1
DATA1
ADDR0
DATA0
Write:
Reset:
Indeterminate after reset
Figure 6-4. Port C Data Register (PORTC)
F
Freescale Semiconductor, Inc.
n
.
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