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參數(shù)資料
| 型號： | M38C29FFAFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 5 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 57/104頁 |
| 文件大?。?/td> | 1327K |
| 代理商： | M38C29FFAFP |
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Rev.2.00
May 28, 2004
page 54 of 100
38C2 Group (A Version)
NOTES ON USE
VL3 pin
When LCD drive control circuit is not used, connect VL3 to VCC.
Countermeasures against noise
(1) Shortest wiring length
Wiring for RESET pin
Make the length of wiring which is connected to the RESET pin as
short as possible. Especially, connect a capacitor across the
RESET pin and the VSS pin with the shortest possible wiring (within
20mm).
q Reason
The width of a pulse input into the RESET pin is determined by
the timing necessary conditions. If noise having a shorter pulse
width than the standard is input to the RESET pin, the reset is
released before the internal state of the microcomputer is com-
pletely initialized. This may cause a program runaway.
Fig. 57 Wiring for clock I/O pins
(2) Connection of bypass capacitor across VSS line and VCC line
Connect an approximately 0.1
F bypass capacitor across the VSS
line and the VCC line as follows:
Connect a bypass capacitor across the VSS pin and the VCC pin at
equal length.
Connect a bypass capacitor across the VSS pin and the VCC pin
with the shortest possible wiring.
Use lines with a larger diameter than other signal lines for VSS line
and VCC line.
Connect the power source wiring via a bypass capacitor to the VSS
pin and the VCC pin.
Fig. 56 Wiring for the RESET pin
Wiring for clock input/output pins
Make the length of wiring which is connected to clock I/O pins as
short as possible.
Make the length of wiring (within 20 mm) across the grounding
lead of a capacitor which is connected to an oscillator and the
VSS pin of a microcomputer as short as possible.
Separate the VSS pattern only for oscillation from other VSS pat-
terns.
q Reason
If noise enters clock I/O pins, clock waveforms may be deformed.
This may cause a program failure or program runaway. Also, if a
potential difference is caused by the noise between the VSS level
of a microcomputer and the VSS level of an oscillator, the correct
clock will not be input in the microcomputer.
RESET
Reset
circuit
Noise
VSS
Reset
circuit
VSS
RESET
VSS
N.G.
O.K.
Fig. 58 Bypass capacitor across the VSS line and the VCC line
Noise
XIN
XOUT
VSS
XIN
XOUT
VSS
N.G.
O.K.
VSS
VCC
VSS
VCC
N.G.
O.K.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38C29FFAFP#U0 | 功能描述:IC 740/38C2 MCU FLASH 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 產(chǎn)品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數(shù):121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 34x10b，D/A 2x8b 振蕩器型:內(nèi)部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產(chǎn)品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| M38C29FFAHP | 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 60K 64-LQFP - Trays |
| M38C29FFAHP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 60KB FLASH 5V 64LQFP - Trays |
| M38C29FFFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C29FFHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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