參數(shù)資料
型號(hào)： CY7C63001C
廠商： Cypress Semiconductor Corp.
英文描述： Universal Serial Bus Microcontroller(通用串行總線微控制器)
中文描述： 通用串行總線控制器（通用串行總線微控制器）
文件頁(yè)數(shù)： 10/28頁(yè)
文件大?。?/td> 1076K
代理商： CY7C63001C
CY7C63001C
CY7C63101C
Document #: 38-08026 Rev. *B
Page 10 of 28
To configure a GPIO pin as an input, a “1” should be written to
the Port Data Register bit associated with that pin to disable
the pull-down function of the Isink DAC (see
Figure 6-9
).When
the Port Data Register is read, the bit value is a “1” if the
voltage on the pin is greater than the Schmitt trigger threshold,
or “0” if it is below the threshold. In applications where an
internal pull-up is required, the R
up
pull-up resistor can be
engaged by writing a “0” to the appropriate bit in the Port
Pull-up Register.
Both Port 0 and Port 1 Pull-up Registers are write only (see
Figures 6-10
and
6-11
). The Port 0 Pull-up Register is located
at I/O address 0x08 and Port 1 Pull-up Register is mapped to
address 0x09. The contents of the Port Pull-up Registers are
cleared during reset, allowing the outputs to be controlled by
the state of the Data Registers. The Port Pull-up Registers also
select the polarity of transition that generates a GPIO interrupt.
A “0” selects a HIGH to LOW transition while a “1” selects a
LOW to HIGH transition.
Writing a “0” to the Data Register drives the output LOW.
Instead of providing a fixed output drive, the USB Controller
allows the user to select an output sink current level for each
I/O pin. The sink current of each output is controlled by a
dedicated Port Isink Register. The lower four bits of this
register contain a code selecting one of sixteen sink current
levels. The upper four bits of the register are ignored. The
format of the Port Isink Register is shown in
Figure 6-12
.
Port 0 is a low-current port suitable for connecting photo
transistors. Port 1 is a high current port capable of driving
LEDs. See section 8.0 for current ranges. 0000 is the lowest
drive strength. 1111 is the highest.
The write-only sink current control registers for Port 0 outputs
are assigned from I/O address 0x30 to 0x37 with the control
bits for P00 starting at 0x30. Port 1 sink current control
registers are assigned from I/O address 0x38 to 0x3F with the
control bits for P10 starting at 0x38. All sink current control
registers are cleared during a reset, resulting in the minimum
current sink setting.
Table 6-2. Output Control Truth Table
Data Register
0
0
1
1
Port Pull-up Register
0
1
0
1
Output at I/O Pin
Sink Current (‘0’)
Sink Current (‘0’)
Pull-up Resistor (‘1’)
Hi-Z
Interrupt Polarity
High to Low
Low to High
High to Low
Low to High
b7
b6
b5
b4
b3
b2
b1
b0
PULL0.7
W
0
PULL0.6
W
0
PULL0.5
W
0
PULL0.4
W
0
PULL0.3
W
0
PULL0.2
W
0
PULL0.1
W
0
PULL0.0
W
0
Figure 6-10. Port 0 Pull-up Register (Address 0x08)
b7
b6
b5
b4
b3
b2
b1
b0
PULL1.7
W
0x
PULL1.6
W
0
PULL1.5
W
0
PULL1.4
W
0
PULL1.3
W
0
PULL1.2
W
0
PULL1.1
W
0
PULL1.0
W
0
Figure 6-11. Port 1 Pull-up Register (Address 0x09)
b7
b6
b5
b4
b3
b2
b1
b0
Reserved
W
x
Reserved
W
x
Reserved
W
x
UNUSED
W
x
ISINK3
W
x
ISINK2
W
x
ISINK1
W
x
ISINK0
W
x
Figure 6-12. Port Isink Register for One GPIO Line
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY7C63001C-PXC 功能描述:8位微控制器 -MCU Universal Serial Bus Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
CY7C63001C-SC 制造商:Cypress Semiconductor 功能描述:
CY7C63001C-SXC 功能描述:8位微控制器 -MCU Universal Serial Bus Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
CY7C63001C-SXCT 功能描述:8位微控制器 -MCU USB Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
CY7C63001C-XC DIE 制造商:Cypress Semiconductor 功能描述:
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