參數(shù)資料
型號(hào)： M37548G3FP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封裝： 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件頁(yè)數(shù)： 77/84頁(yè)
文件大?。?/td> 1427K
代理商： M37548G3FP
Rev.2.02
Mar 31, 2009
Page 79 of 81
REJ03B0210-0202
7548 Group
Notes on Serial I/O
Notes on A/D conversion
1. Analog input pin
Make the signal source impedance for analog input low, or equip
an analog input pin with an external capacitor of 0.01
F to 1F.
Further, be sure to verify the operation of application products on
the user side.
<Reason>
An analog input pin includes the capacitor for analog voltage
comparison.
Accordingly, when signals from signal source with high
impedance are input to an analog input pin, charge and discharge
noise generates. This may cause the A/D conversion/comparison
precision to be worse.
2. Clock frequency during A/D conversion
The comparator consists of a capacity coupling, and a charge of
the capacity will be lost if the clock frequency is too low. This
m ay cause the A/D conversion precision to be worse.
Accordingly, set f(XIN) in order that the A/D conversion clock is
250 kHz or over during A/D conversion.
3. Read A/D conversion register
8-bit read
Read only the A/D conversion low-order register (address 3516).
10-bit read
Read the A/D conversion high-order register (address 3616) first,
and then, read the A/D conversion low-order register (address
3516).
In this case, the high-order 6 bits of address 3616 returns “0”
when read.
4.
A/D translation accuracy
相關(guān)PDF資料
PDF描述
M37548G1FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
M37548G2-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
M37640E8-XXXFP 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP80
M37702S1ABFP 16-BIT, 16 MHz, MICROCONTROLLER, PQFP80
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37548G3FP#U0 功能描述:MCU 6K ROM 256K 20-SSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:96KB（96K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-LQFP 包裝:托盤 其它名稱:568-9587
M37548G3-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37549G1FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37549G1-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37549G2FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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