參數資料
型號: MC68HC11F1CFN3
廠商: Freescale Semiconductor
文件頁數: 141/158頁
文件大?。?/td> 0K
描述: IC MCU 512 EEPROM 3MHZ 68-PLCC
標準包裝: 18
系列: HC11
核心處理器: HC11
芯體尺寸: 8-位
速度: 3MHz
連通性: SCI,SPI
外圍設備: POR,WDT
輸入/輸出數: 30
程序存儲器類型: 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
數據轉換器: A/D 8x8b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 68-LCC(J 形引線)
包裝: 管件
PARALLEL INPUT/OUTPUT
TECHNICAL DATA
6-3
impedance state, as neither the N-channel nor the P-channel devices are active. It is
customary to have an external pull-up resistor on lines that are driven by open-drain
devices. Port C can only be configured for wired-OR operation when the MCU is in sin-
gle-chip or bootstrap modes.
DDC[7:0] — Data Direction for Port C
0 = Input
1 = Output
6.4 Port D
In all modes, port D bits [5:0] can be used either for general-purpose I/O, or with the
SCI and SPI subsystems. During reset, port D pins are configured as high impedance
inputs (DDRD bits cleared).
The DWOM control bit in the SPCR register disables port D’s P-channel output drivers.
Because the N-channel driver is not affected by DWOM, setting DWOM causes port
D to become an open-drain-type output port suitable for wired-OR operation. In wired-
OR mode, (PORTD bits are at logic level zero), pins are actively driven low by the N-
channel driver. When a port D bit is at logic level one, the associated pin is in a high-
impedance state, as neither the N-channel nor the P-channel devices are active. It is
customary to have an external pull-up resistor on lines that are driven by open-drain
devices. Port D can be configured for wired-OR operation in any operating mode.
PORTC — Port C Data
$1006
Bit 7
654321
Bit 0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
S. Chip or
Boot:
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
RESET:
IIIIIII
I
Expan. or
Test:
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
DDRC — Data Direction Register for Port C
$1007
Bit 7
654321
Bit 0
DDC7
DDC6
DDC5
DDC4
DDC3
DDC2
DDC1
DDC0
RESET:
0000000
0
PORTD — Port D Data
$1008
Bit 7
654321
Bit 0
PD5
PD4
PD3
PD2
PD1
PD0
RESET:
0
IIIII
I
Alt. Pin
Func.:
SS
SCK
MOSI
MISO
TxD
RxD
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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