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參數(shù)資料
| 型號： | CY7C63743C |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | enCoRe USB Combination Low-Speed USB and PS/2 Peripheral Controller(enCoRe USB結(jié)合低速USB和PS/2外設(shè)控制器) |
| 中文描述： | 的enCoRe USB的組合低速USB和PS / 2外設(shè)控制器（的enCoRe的USB結(jié)合低速的USB和的PS / 2外設(shè)控制器） |
| 文件頁數(shù)： | 10/49頁 |
| 文件大小： | 1942K |
| 代理商： | CY7C63743C |
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CY7C63722C
CY7C63723C
CY7C63743C
FOR
FOR
Document #: 38-08022 Rev. *C
Page 10 of 49
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 Tim-
er Adjust Bit [2:0], as described in Section 11.2. One com-
mon use of the wake-up interrupts is to generate periodical
wake-up events during suspend mode to check for chang-
es, such as looking for movement in a mouse, while main-
taining a low average power.
Bit 3: Low-voltage Reset Disable
When V
CC
drops below V
LVR
(see Section 25.0 for the val-
ue of V
LVR
) and the Low-voltage Reset circuit is enabled,
the microcontroller enters a partial suspend state for a pe-
riod of t
START
(see Section 26.0 for the value of t
START
).
Program execution begins from address 0x0000 after this
t
START
delay period. This provides time for V
CC
to stabilize
Figure 9-1. Clock Oscillator On-chip Circuit
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
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)
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PDF描述 |
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| CY7C63723C | enCoRe USB Combination Low-Speed USB and PS/2 Peripheral Controller(enCoRe USB結(jié)合低速USB和PS/2外設(shè)控制器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C63743C-PXC | 功能描述:輸入/輸出控制器接口集成電路 USB Combo Lo Spd PS/2 Periphrl Cntrlr 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 |
| CY7C63743C-QXC | 功能描述:輸入/輸出控制器接口集成電路 LO Speed 3 Endpoint USB COM 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 |
| CY7C63743C-SXC | 功能描述:輸入/輸出控制器接口集成電路 USB Combo Lo Spd PS/2 Periphrl Cntrlr 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 |
| CY7C63743C-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 |
| CY7C63743-PC | 功能描述:IC MCU 8K LS USB/PS-2 24-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 |
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