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参数资料
| 型号： | PIC24FJ256GB108T-I/PT |
| 厂商： | Microchip Technology |
| 文件页数： | 7/22页 |
| 文件大小： | 0K |
| 描述： | IC PIC MCU FLASH 256K 80TQFP |
| 产品培训模块： | Asynchronous Stimulus |
| 标准包装： | 1,200 |
| 系列： | PIC® 24F |
| 核心处理器： | PIC |
| 芯体尺寸： | 16-位 |
| 速度： | 32MHz |
| 连通性： | I²C，SPI，UART/USART，USB OTG |
| 外围设备： | 欠压检测/复位，LVD，POR，PWM，WDT |
| 输入/输出数： | 65 |
| 程序存储器容量： | 256KB（85.5K x 24） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 16K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2 V ~ 3.6 V |
| 数据转换器： | A/D 16x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 80-TQFP |
| 包装： | 带卷 (TR) |
| 配用： | DM240011-ND - KIT STARTER MPLAB FOR PIC24F MCU MA240014-ND - MODULE PLUG-IN PIC24 |
| 其它名称： | PIC24FJ256GB108T-I/PTTR |
2008-2011 Microchip Technology Inc.
DS80369N-page 15
PIC24FJ256GB110 FAMILY
2.4.1
CONSIDERATIONS FOR CERAMIC
CAPACITORS
In recent years, large value, low-voltage, surface
mount ceramic capacitors have become very cost
effective in sizes up to a few tens of microfarad. The
low-ESR, small physical size and other properties
make ceramic capacitors very attractive in many types
of applications.
Ceramic capacitors are suitable for use with the inter-
nal voltage regulator of this microcontroller. However,
some care is needed in selecting the capacitor to
ensure that it maintains sufficient capacitance over the
intended operating range of the application.
Typical low-cost 10 F ceramic capacitors are available
in X5R, X7R and Y5V dielectric ratings (other types are
also available, but are less common). The initial toler-
ance specifications for these types of capacitors are
often specified as ±10% to ±20% (X5R and X7R), or
-20%/+80% (Y5V). However, the effective capacitance
that these capacitors provide in an application circuit
will also vary based on additional factors, such as the
applied DC bias voltage and the temperature. The total
in-circuit tolerance is, therefore, much wider than the
initial tolerance specification.
The X5R and X7R capacitors typically exhibit satisfac-
tory temperature stability (ex: ±15% over a wide
temperature range, but consult the manufacturer’s data
sheets for exact specifications). However, Y5V capaci-
tors typically have extreme temperature tolerance
specifications of +22%/-82%. Due to the extreme
temperature tolerance, a 10 F nominal rated Y5V type
capacitor may not deliver enough total capacitance to
meet minimum internal voltage regulator stability and
transient response requirements. Therefore, Y5V
capacitors are not recommended for use with the inter-
nal voltage regulator if the application must operate
over a wide temperature range.
In addition to temperature tolerance, the effective
capacitance of large value ceramic capacitors can vary
substantially, based on the amount of DC voltage
applied to the capacitor. This effect can be very signifi-
cant, but is often overlooked or is not always
documented.
A typical DC bias voltage vs. capacitance graph for
16V, 10V and 6.3V rated capacitors is shown in
FIGURE 2-4
DC BIAS VOLTAGE vs.
CAPACITANCE
CHARACTERISTICS
When selecting a ceramic capacitor to be used with the
internal voltage regulator, it is suggested to select a
high-voltage rating, so that the operating voltage is a
small percentage of the maximum rated capacitor volt-
age. For example, choose a ceramic capacitor rated at
16V for the 2.5V core voltage. Suggested capacitors
are shown in Table 2-1.
-80
-70
-60
-50
-40
-30
-20
-10
0
10
5
101112
13
14
1516
17
DC Bias Voltage (VDC)
C
a
p
aci
tan
ce
Ch
ang
e
(%
)
01
2
3
4
6
7
8
9
16V Capacitor
10V Capacitor
6.3V Capacitor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC24FJ256GB110 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG) |
| PIC24FJ256GB110-I/PF | 功能描述:16位微控制器 - MCU 16B 16MIPS 256KB I/O RAM84 OTG RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| PIC24FJ256GB110-I/PT | 功能描述:16位微控制器 - MCU 16B 16MIPS 256KB I/O RAM84 OTG RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| PIC24FJ256GB110-I/PT | 制造商:Microchip Technology Inc 功能描述:; Leaded Process Compatible:Yes |
| PIC24FJ256GB110T-I/PF | 功能描述:16位微控制器 - MCU 16B 16MIPS 256KB I/O RAM84 OTG RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
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