參數(shù)資料
型號: 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)
文件頁數(shù): 18/28頁
文件大?。?/td> 1076K
代理商: CY7C63001C
CY7C63001C
CY7C63101C
Document #: 38-08026 Rev. *B
Page 18 of 28
6.11
The USB system specifies that a pull-up resistor be connected
on the D– pin of low-speed peripherals as shown in
Figure 6-24
. To meet the USB 1.1 spec (section 7.1.6), which
states that the termination must charge the D– line from 0 to
2.0V in 2.5
μ
s, the total load capacitance on the D+/D– lines
of the low-speed USB device (Cypress device capacitance +
External USB Pull-Up Resistor
PCB trace capacitance + integrated cable capacitance) must
be less than 250 pF. As Cypress D+/D– transceiver input
capacitance is 20 pF max, up to 230 pF of capacitance is
allowed for in the low speed device’s integrated cable and
PCB. If the cable + PCB capacitance on the D+/D– lines will
be greater than approximately 230 pF, an external 3.3V
regulator must be used as shown in
Figure 6-25
.
7.5kW
±
1%
U
Port0
Port1
VSS
VPP
CEXT
XTALIN
Port0
Port1
D+
D–
VCC
XTALOUT
6-MHz
Resonator
Switches,
Devices, Etc.
Switches,
Devices, Etc.
For Cext
Wake-up Mode
0.1
μ
F
4.7
μ
F
+4.35V (min)
Figure 6-24. Application Showing 7.5k
±
1%
Pull-Up Resistor
1.5
±
kW
U
Port0
Port1
V
SS
V
CEXT
XTALIN
Port0
Port1
D+
D–
V
XTALOUT
6-MHz
Resonator
Switches,
Devices, Etc.
Switches,
Devices, Etc.
For Cext
Wake-up Mode
0.1
μ
F
4.7
μ
F
3.3V
Reg
+3.3V
0.1
μ
F
+4.35V (min.)
Figure 6-25. Application Showing 1.5-k
±
5% Pull-Up Resistor
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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 最大時鐘頻率:50 MHz 程序存儲器大小: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 最大時鐘頻率:50 MHz 程序存儲器大小: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 最大時鐘頻率:50 MHz 程序存儲器大小: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: