參數(shù)資料
型號(hào)： M38514E6FP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO42
封裝： 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù)： 37/91頁
文件大?。?/td> 1161K
代理商： M38514E6FP
Rev.1.01
Oct 15, 2003
page 42 of 89
3851 Group (Built-in 24 KB or more ROM)
A-D CONVERTER
[A-D Conversion Registers (ADL, ADH)]
003516, 003616
The A-D conversion registers are read-only registers that store the
result of an A-D conversion. Do not read these registers during an
A-D conversion.
[A-D Control Register (ADCON)] 003416
The AD control register controls the A-D conversion process. Bits
0 to 2 select a specific analog input pin. Bit 4 indicates the
completion of an A-D conversion. The value of this bit remains at
“0” during an A-D conversion and changes to “1” when an A-D
conversion ends. Writing “0” to this bit starts the A-D conversion.
Comparison Voltage Generator
The comparison voltage generator divides the voltage between
AVSS and VREF into 1024 and outputs the divided voltages.
Channel Selector
The channel selector selects one of ports P30/AN0 to P34/AN4 and
inputs the voltage to the comparator.
Comparator and Control Circuit
The comparator and control circuit compare an analog input volt-
age with the comparison voltage, and the result is stored in the
A-D conversion registers. When an A-D conversion is completed,
the control circuit sets the A-D conversion completion bit and the
A-D interrupt request bit to “1”.
Note that because the comparator consists of a capacitor cou-
pling, set f(XIN) to 500 kHz or more during an A-D conversion.
When the A-D converter is operated at low-speed mode, f(XIN)
and f(XCIN) do not have the lower limit of frequency, because of
the A-D converter has a built-in self-oscillation circuit.
Fig. 44 Structure of A-D control register
Fig. 45 Structure of A-D conversion registers
Fig. 46 Block diagram of A-D converter
A-D control register
(ADCON : address 003416)
Analog input pin selection bits
0 0 0: P30/AN0
0 0 1: P31/AN1
0 1 0: P32/AN2
0 1 1: P33/AN3
1 0 0: P34/AN4
Not used (returns “0” when read)
A-D conversion completion bit
0: Conversion in progress
1: Conversion completed
Not used (returns “0” when read)
b7
b0
b2 b1 b0
10-bit reading
(Read address 003616 before 003516)
(Address 003616)
(Address 003516)
8-bit reading (Read only address 003516)
(Address 003516)
b8
b7b6b5b4 b3b2b1b0
b7
b0
b9
b7
b0
Note : The high-order 6 bits of address 003616 become “0”
at reading.
b9 b8 b7 b6 b5 b4 b3 b2
b7
b0
C
h
a
n
e
l
s
e
le
c
to
r
A-D control circuit
A-D conversion low-order register
Resistor ladder
VREF AVSS
Comparator
A-D interrupt request
b7b0
3
10
P30/AN0
P31/AN1
P32/AN2
P33/AN3
P34/AN4
Data bus
A-D control register
A-D conversion high-order register
(Address 003416)
(Address 003616)
(Address 003516)
相關(guān)PDF資料
PDF描述
M38514M6-XXXFP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO42
M38514E6-XXXSP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP42
M38517F8SP 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDIP42
M38517F8FP 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO42
M38517F8SP 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDIP42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38514E6SP 制造商:Renesas Electronics Corporation 功能描述:SLIM740 OTP 24K/640B RAM, W/A-D, I2C, L - Rail/Tube
M38517T-ADS 功能描述:DEV TMP TRGT BRD FOR M38517RSS & RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:適配器板 適用于相關(guān)產(chǎn)品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE
M38517T-PAC 功能描述:DEV SIMPLE TOOL EMULATOR FOR M38 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 內(nèi)電路編程器、仿真器以及調(diào)試器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 19/Jul/2010 標(biāo)準(zhǔn)包裝:1 系列:* 類型:* 適用于相關(guān)產(chǎn)品:* 所含物品:*
M3852 BK001 制造商:Alpha Wire 功能描述:CBL 8COND 14AWG BLK 1000'
M3852 BK002 制造商:Alpha Wire 功能描述:CBL 8COND 14AWG BLK 500'
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*