參數(shù)資料
型號: M68HC11D3CFB1
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 35/124頁
文件大小: 5398K
代理商: M68HC11D3CFB1
PIN DESCRIPTIONS
2-6
TECHNICAL DATA
2.10 Port Signals
In the 44-pin PLCC package, 32 input/output lines are arranged into four 8-bit ports:
A, B, C, and D. The lines of ports B, C, and D are fully bidirectional. Each of these four
ports serves a purpose other than I/O, depending on the operating mode or peripheral
functions selected. Note that ports B, C, and two bits of port D are available for I/O
functions only in single-chip and bootstrap modes. Refer to Table 2-1 for details about
the 32 port signals' functions within different operating modes.
*In the 40-pin package, pins PA4 and PA6 are not bonded. Their associated I/O and output compare functions are
not available externally. They can still be used as internal software timers, however.
Table 2-1 Port Signal Functions
Port/Bit
Single-Chip and
Bootstrap Mode
Expanded Multiplexed and
Special Test Mode
PA0
PA0/IC3
PA1
PA1/IC2
PA2
PA2/IC1
PA3
PA3/OC5/IC4/OC1
PA4*
PA4/OC4/OC1
PA5
PA5/OC3/OC1
PA6*
PA6/OC2/OC1
PA7
PA7/PAI/OC1
PB0
ADDR8
PB1
ADDR9
PB2
ADDR10
PB3
ADDR11
PB4
ADDR12
PB5
ADDR13
PB6
ADDR14
PB7
ADDR15
PC0
ADDR0/DATA0
PC1
ADDR1/DATA1
PC2
ADDR2/DATA2
PC3
ADDR3/DATA3
PC4
ADDR4/DATA4
PC5
ADDR5/DATA5
PC6
ADDR6/DATA6
PC7
ADDR7/DATA7
PD0
PD0/RxD
PD1
PD1/TxD
PD2
PD2/MISO
PD3
PD3/MOSI
PD4
PD4/SCK
PD5
PD5/SS
PD6
AS
PD7
R/W
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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