參數(shù)資料
型號： MC68HC11F1CPU4
廠商： Freescale Semiconductor
文件頁數(shù)： 139/158頁
文件大?。?/td> 0K
描述： IC MCU 512 EEPROM 4MHZ 80-LQFP
標(biāo)準(zhǔn)包裝： 90
系列： HC11
核心處理器： HC11
芯體尺寸： 8-位
速度： 4MHz
連通性： SCI，SPI
外圍設(shè)備： POR，WDT
輸入/輸出數(shù)： 30
程序存儲(chǔ)器類型： ROMless
EEPROM 大?。?/td> 512 x 8
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 4.75 V ~ 5.25 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x8b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 80-LQFP
包裝： 托盤
PARALLEL INPUT/OUTPUT
TECHNICAL DATA
6-1
SECTION 6 PARALLEL INPUT/OUTPUT
The MC68HC11F1 MCU has up to 54 input/output lines, depending on the operating
mode. The data bus of this microcontroller is nonmultiplexed. I/O lines are organized
into seven parallel ports. Ports with bidirectional pins have an associated data direc-
tion control register. This register (DDRx) contains a data direction control bit for each
bidirectional port line. The following table is a summary of the configuration and fea-
tures of each port.
Port pin function is mode dependent. Do not confuse pin function with the electrical
state of the pin at reset. Port pins are either driven to a specified logic level or are con-
figured as high impedance inputs. I/O pins configured as high-impedance inputs have
port data that is indeterminate. The contents of the corresponding latches are depen-
dent upon the electrical state of the pins during reset. In port descriptions, an “I” indi-
cates this condition. Port pins that are driven to a known logic level during reset are
shown with a value of either one or zero. Some control bits are unaffected by reset.
Reset states for these bits are indicated with a “U”.
6.1 Port A
Port A has eight bidirectional I/O pins and shares functions with the timer system.
Table 6-1 I/O Port Configuration
Port
Input Pins
Output Pins
Bidirectional Pins
Shared Functions
Port A
—
8
Timer
Port B
—
8
—
High-Order Address
Port C
—
8
Data Bus
Port D
—
6
SCI and SPI
Port E
8
—
A/D Converter
Port F
—
8
—
Low-Order Address
Port G
—
8
Chip Select Outputs
PORTA — Port A Data
$1000
Bit 7
654321
Bit 0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
RESET:
IIIIIII
I
Alt. Pin
Func.:
PAI
OC2
OC3
OC4
IC4/OC5
IC1
IC2
IC3
And/or:
OC1
—
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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