參數(shù)資料
型號(hào)： CY7C63722-XC
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： 微控制器/微處理器
英文描述： enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller
中文描述： 8-BIT, OTPROM, 12 MHz, RISC MICROCONTROLLER, UUC25
封裝： DIE-25
文件頁(yè)數(shù)： 14/58頁(yè)
文件大?。?/td> 1236K
代理商： CY7C63722-XC
FOR
FOR
enCoRe
USB CY7C63722/23
CY7C63743
Document #: 38-08022 Rev. **
Page 14 of 58
9.0
Clocking
The chip can be clocked from either the internal on-chip clock, or from an oscillator based on an external resonator/crystal, as
shown in
Figure 9-1
. No additional capacitance is included on chip at the XTALIN/OUT pins. Operation is controlled by the Clock
Configuration Register,
Figure 9-2
.
Bit 7: Ext. Clock Resume Delay
External Clock Resume Delay bit selects the delay time when switching to the external oscillator from the internal oscillator
mode, or when waking from suspend mode with the external oscillator enabled.
1 = 4 ms delay.
0 = 128
μ
s delay.
The delay gives the oscillator time to start up. The shorter time is adequate for operation with ceramic resonators, while the
longer time is preferred for start-up with a crystal. (These times
do not include
an initial oscillator start-up time which depends
on the resonating element. This time is typically 50–100
μ
s for ceramic resonators and 1–10 ms for crystals). Note that this
bit only selects the delay time for the external clock mode. When waking from suspend mode with the internal oscillator (Bit 0
is LOW), the delay time is only 8
μ
s in addition to a delay of approximately 1
μ
s for the oscillator to start.
Bit [6:4]: Wake-up Timer Adjust Bit [2:0]
The Wake-up Timer Adjust Bits are used to adjust the Wake-up timer period.
If the Wake-up interrupt is enabled in the Global Interrupt Enable Register, the microcontroller will generate wake-up interrupts
periodically. The frequency of these periodical wake-up interrupts is adjusted by setting the Wake-up Timer Adjust Bit [2:0],
as described in Section 11.2. One common use of the wake-up interrupts is to generate periodical wake-up events during
suspend mode to check for changes, such as looking for movement in a mouse, while maintaining a low average power.
Figure 9-1. Clock Oscillator On-chip Circuit
Bit #
7
6
5
4
3
2
1
0
Bit Name
Ext. Clock
Resume
Delay
Wake-up Timer Adjust Bit [2:0]
Low-voltage
Reset
Disable
Precision
USB
Clocking
Enable
Internal
Clock
Output
Disable
External
Oscillator
Enable
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Figure 9-2. Clock Configuration Register (Address 0xF8)
XTALOUT
XTALIN
Clk2x (12 MHz)
(to Microcontroller)
Clock
Doubler
Clk1x (6 MHz)
(to USB SIE)
Port 2.1
Internal Osc
Int Clk Output Disable
Ext Clk Enable
相關(guān)PDF資料
PDF描述
CY7C63723-SC enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller
CY7C63743-SC enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller
CY7C63722 enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller
CY7C63723 enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller
CY7C63723-PC enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY7C63723C-PXC 功能描述:輸入/輸出控制器接口集成電路 USB/PS/2 Combo LoSpd Peripheral Controlr RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
CY7C63723C-SXC 功能描述:輸入/輸出控制器接口集成電路 USB/PS/2 Combo LoSpd Peripheral Controlr RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
CY7C63723C-SXCT 功能描述:輸入/輸出控制器接口集成電路 USB/PS/2 Combo LoSpd Peripheral Controlr RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
CY7C63723-PC 功能描述:IC MCU 8K LS USB/PS-2 18-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:enCoRe™ 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲(chǔ)器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382
CY7C63723-PXC 功能描述:IC MCU 8K USB/PS2 LS 18DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:enCoRe™ 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲(chǔ)器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*