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參數(shù)資料
| 型號： | CY7C63743-SC |
| 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, PDSO24 |
| 封裝： | 0.300 INCH, PLASTIC, MO-119, SOIC-24 |
| 文件頁數(shù)： | 18/58頁 |
| 文件大?。?/td> | 1236K |
| 代理商： | CY7C63743-SC |
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FOR
FOR
enCoRe
USB CY7C63722/23
CY7C63743
Document #: 38-08022 Rev. **
Page 18 of 58
11.1
When exiting suspend on a wake-up event, the device can be configured to run in either Internal or External Clock mode. The
mode is selected by the state of the External Oscillator Enable bit in the Clock Configuration Register (
Figure 9-2
). Using the
Internal Clock saves the external oscillator start-up time and keeps that oscillator off for additional power savings. The external
oscillator mode can be activated when desired, similar to operation at power-up.
The sequence of events for these modes is as follows:
Wake in Internal Clock Mode:
1. Before entering suspend, clear bit 0 of the Clock Configuration Register. This selects Internal clock mode after suspend.
2. Enter suspend mode by setting the suspend bit of the Processor Status and Control Register.
3. After a wake-up event, the internal clock starts immediately (within 2
μ
s).
4. A time-out period of 8
μ
s passes, and then firmware execution begins.
5. At some later point, to activate External Clock mode, set bit 0 of the Clock Configuration Register. This halts the internal clocks
while the external clock becomes stable. After an additional time-out (128
μ
s or 4 ms, see Section 9.0), firmware execution
resumes.
Wake in External Clock Mode:
1. Before entering suspend, the external clock must be selected by setting bit 0 of the Clock Configuration Register. Make sure
this bit is still set when suspend mode is entered. This selects External clock mode after suspend.
2. Enter suspend mode by setting the suspend bit of the Processor Status and Control Register.
3. After a wake-up event, the external oscillator is started. The clock is monitored for stability (this takes approximately 50–100
μ
s
with a ceramic resonator).
4. After an additional time-out period (128
μ
s or 4 ms, see Section 9.0), firmware execution resumes.
Clocking Mode on Wake-up from Suspend
11.2
The wake-up timer runs whenever the wake-up interrupt is enabled, and is turned off whenever that interrupt is disabled.
Operation is independent of whether the device is in suspend mode or if the global interrupt bit is enabled. Only the Wake-up
Timer Interrupt Enable bit (
Figure 21-1
) controls the wake-up timer.
Once this timer is activated, it will give interrupts after its time-out period (see below). These interrupts continue periodically until
the interrupt is disabled. Whenever the interrupt is disabled, the wake-up timer is reset, so that a subsequent enable always
results in a full wake-up time.
The wake-up timer can be adjusted by the user through the Wake-up Timer Adjust bits in the Clock Configuration Register
(
Figure 9-2
). These bits clear on reset. In addition to allowing the user to select a range for the wake-up time, a firmware algorithm
can be used to tune out initial process and operating condition variations in this wake-up time. This can be done by timing the
wake-up interrupt time with the accurate 1.024-ms timer interrupt, and adjusting the Timer Adjust bits accordingly to approximate
the desired wake-up time.
Table 11-1. Wake-up Timer Adjust Settings
Wake-up Timer
12.0
General Purpose I/O Ports
Ports 0 and 1 provide up to 16 versatile GPIO pins that can be read or written (the number of pins depends on package type).
Figure 12-1
shows a diagram of a GPIO port pin.
Adjust Bits [2:0]
(Bits [6:4] in
Figure 9-2
)
000 (reset state)
001
010
011
100
101
110
111
See Section 26.0 for the value of t
WAKE
Wake-up Time
1 * t
WAKE
2 * t
WAKE
4 * t
WAKE
8 * t
WAKE
16 * t
WAKE
32 * t
WAKE
64 * t
WAKE
128 * t
WAKE
相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
| CY7C63743 | enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller |
| CY7C63743-PC | enCoRe USB Combination Low-Speed USB & PS/2 Peripheral Controller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C63743-SXC | 功能描述:IC MCU 8K USB/PS2 LS 24SOIC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應用 系列:enCoRe™ 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標準包裝:250 系列:- 應用:網(wǎng)絡處理器 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) 供應商設備封裝:PG-LQFP-208 其它名稱:SP000314382 |
| CY7C63743-SXCT | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述: |
| CY7C63801-PXC | 功能描述:USB 接口集成電路 4K Flash 256 byte RAM COM RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| CY7C63801-SXC | 功能描述:USB 接口集成電路 USB Peripheral Cntrl 4K/256 16-SOIC RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| CY7C63801-SXCES | 制造商:Cypress Semiconductor 功能描述: |
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