参数资料
型号: DSPIC33FJ32GP204T-I/ML
厂商: Microchip Technology
文件页数: 37/176页
文件大小: 0K
描述: IC DSPIC MCU/DSP 32K 44QFN
产品培训模块: Asynchronous Stimulus
标准包装: 1,600
系列: dsPIC™ 33F
核心处理器: dsPIC
芯体尺寸: 16-位
速度: 40 MIP
连通性: I²C,IrDA,LIN,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 35
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 3.6 V
数据转换器: A/D 13x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-VQFN 裸露焊盘
包装: 带卷 (TR)
配用: DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
DM240001-ND - BOARD DEMO PIC24/DSPIC33/PIC32
其它名称: DSPIC33FJ32GP204T-I/MLTR
129
AT89C5131
4136C–USB–04/05
Suspend/Resume Management
Suspend
The Suspend state can be detected by the USB controller if all the clocks are enabled
and if the USB controller is enabled. The bit SPINT is set by hardware when an idle
state is detected for more than 3 ms. This triggers a USB interrupt if enabled.
In order to reduce current consumption, the firmware can put the USB PAD in idle mode,
stop the clocks and put the C51 in Idle or Power-down mode. The Resume detection is
still active.
The USB PAD is put in idle mode when the firmware clear the SPINT bit. In order to
avoid a new suspend detection 3ms later, the firmware has to disable the USB clock
input using the SUSPCLK bit in the USBCON Register. The USB PAD automatically
exits of idle mode when a wake-up event is detected.
The stop of the 48 MHz clock from the PLL should be done in the following order:
1.
Disable of the 48 MHz clock input of the USB controller by setting to 1 the SUS-
PCLK bit in the USBCON register.
2.
Disable the PLL by clearing the PLLEN bit in the PLLCON register.
Resume
When the USB controller is in Suspend state, the Resume detection is active even if all
the clocks are disabled and if the C51 is in Idle or Power-down mode. The WUPCPU bit
is set by hardware when a non-idle state occurs on the USB bus. This triggers an inter-
rupt if enabled. This interrupt wakes up the CPU from its Idle or Power-down state and
the interrupt function is then executed. The firmware will first enable the 48 MHz gener-
ation and then reset to 0 the SUSPCLK bit in the USBCON register if needed.
The firmware has to clear the SPINT bit in the USBINT register before any other USB
operation in order to wake up the USB controller from its Suspend mode.
The USB controller is then re-activated.
Figure 63. Example of a Suspend/Resume Management
USB Controller Init
Detection of a SUSPEND State
SPINT
Set SUSPCLK
Disable PLL
microcontroller in Power-down
Detection of a RESUME State
WUPCPU
Enable PLL
Clear SUSPCLK
Clear WUPCPU Bit
Clear SPINT
相关PDF资料
PDF描述
P51-1000-A-T-D-4.5OVP-000-000 SENSOR 1000PSI 7/16-20-2B 4.5V
P51-75-S-I-P-20MA-000-000 SENSOR 75PSIS 7/16 UNF 4-20MA
REC5-483.3SRWZ/H2/A/CTRL CONV DC/DC 5W 18-72VIN 3.3VOUT
P51-200-A-Z-D-4.5V-000-000 SENSOR 200PSI 1/4-18NPT .5-4.5V
P51-15-G-UCF-MD-5V-000-000 SENSOR 15PSI 9/16-18UNF 1-5V
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