(VCAP
參數(shù)資料
型號: PIC18F45J50-I/PT
廠商: Microchip Technology
文件頁數(shù): 84/164頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 32K 2V 44-TQFP
產(chǎn)品培訓模塊: XLP Deep Sleep Mode
PIC18 J Series MCU Overview
8-bit PIC® Microcontroller Portfolio
標準包裝: 160
系列: PIC® XLP™ 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 48MHz
連通性: I²C,SPI,UART/USART,USB
外圍設備: 欠壓檢測/復位,DMA,POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
RAM 容量: 3.8K x 8
電壓 - 電源 (Vcc/Vdd): 2.15 V ~ 3.6 V
數(shù)據(jù)轉換器: A/D 13x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-TQFP
包裝: 托盤
產(chǎn)品目錄頁面: 657 (CN2011-ZH PDF)
配用: AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
2011 Microchip Technology Inc.
DS39931D-page 31
PIC18F46J50 FAMILY
2.4
Voltage Regulator Pins
(VCAP/VDDCORE)
On “F” devices, a low-ESR (< 5) capacitor is required
on the VCAP/VDDCORE pin to stabilize the voltage
regulator output voltage. The VCAP/VDDCORE pin must
not be connected to VDD or any other voltage source on
an “F” device. The VCAP/VDDCORE pin should only be
connected to a 10 F capacitor to ground. The type can
be ceramic or tantalum. Suitable example capacitors
are provided in Table 2-1.
Designers may use Figure 2-3 to evaluate ESR
equivalence of candidate devices. It is recommended
that the trace length not exceed 0.25 inch (6 mm).
additional information.
On “LF” devices, the internal core voltage regulator is
disabled. On these devices, the VCAP/VDDCORE pin
must be externally connected to a suitable VDDCORE
level voltage source at the circuit board level. Refer to
for the
allowed VDDCORE voltage range. Good power supply
bypassing practices should be used for the supply
source providing the VCAP/VDDCORE voltage.
It is recommended to use a 0.1 F ceramic capacitor
between VCAP/VDDCORE and ground, placed as close
to the VCAP/VDDCORE and VSS pins as possible.
FIGURE 2-3:
FREQUENCY vs. ESR
PERFORMANCE FOR
SUGGESTED VCAP
.
10
1
0.1
0.01
0.001
0.01
0.1
1
10
100
1000 10,000
Frequency (MHz)
ESR
(
)
Note:
Typical data measurement at 25°C, 0V DC bias.
TABLE 2-1:
SUITABLE CAPACITOR EQUIVALENTS
Make
Part #
Nominal
Capacitance
Base Tolerance
Rated Voltage
Temp. Range
TDK
C3216X7R1C106K
10 F
±10%
16V
-55 to +125C
TDK
C3216X5R1C106K
10 F
±10%
16V
-55 to +85C
Panasonic
ECJ-3YX1C106K
10 F
±10%
16V
-55 to +125C
Panasonic
ECJ-4YB1C106K
10 F
±10%
16V
-55 to +85C
Murata
GRM32DR71C106KA01L
10 F
±10%
16V
-55 to +125C
Murata
GRM31CR61C106KC31L
10 F
±10%
16V
-55 to +85C
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