參數(shù)資料
型號: M38254M6160GP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機(jī)
文件頁數(shù): 29/70頁
文件大?。?/td> 607K
代理商: M38254M6160GP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3825 Group
29
A-D CONVERTER
The functional blocks of the A-D converter are described below.
[A-D Conversion Register (AD)] 0035
16
The A-D conversion register is a read-only register that contains
the result of an A-D conversion. When reading this register during
an A-D conversion, the previous conversion result is read.
[A-D Control Register (ADCON)] 0034
16
The A-D control register controls the A-D conversion process. Bits
0 to 2 of this register select specific analog input pins. Bit 3 signals
the completion of an A-D conversion. The value of this bit remains
at “0” during an A-D conversion, then changes to “1” when the A-
D conversion is completed. Writing “0” to this bit starts the A-D
conversion. Bit 4 controls the transistor which breaks the through
current of the resistor ladder. When bit 5, which is the AD external
trigger valid bit, is set to “1”, this bit enables A-D conversion even
by a falling edge of an ADT input. Set ports which share with ADT
pins to input when using an A-D external trigger.
Comparison Voltage Generator
The comparison voltage generator divides the voltage between
AV
SS
and V
REF
by 256, and outputs the divided voltages.
Channel Selector
The channel selector selects one of the input ports P6
7
/AN
7
–P6
0
/
AN
0
.
Comparator and Control Circuit
The comparator and control circuit compare an analog input volt-
age with the comparison voltage and store the result in the A-D
conversion register. When an A-D conversion is completed, the
control circuit sets the AD conversion completion bit and the AD
interrupt request bit to “1”.
Note that the comparator is constructed linked to a capacitor, so
set f(X
IN
) to at least 500kHz during A-D conversion.
Use the clock divided from the main clock X
IN
as the internal clock
φ
.
Fig. 27 A-D converter block diagram
Fig. 26 Structure of A-D control register
A-D control register
(ADCON : address 0034
16
)
Analog input pin selection bits
0 0 0 : P6
0
/AN
0
0 0 1 : P6
1
/AN
1
0 1 0 : P6
2
/AN
2
0 1 1 : P6
3
/AN
3
1 0 0 : P6
4
/AN
4
1 0 1 : P6
5
/AN
5
1 1 0 : P6
6
/AN
6
1 1 1 : P6
7
/AN
7
AD conversion completion bit
0 : Conversion in progress
1 : Conversion completed
V
REF
input switch bit
0 : OFF
1 : ON
AD external trigger valid bit
0 : A-D external trigger invalid
1 : A-D external trigger valid
Interrupt source selection bit
0 : Interrupt request at A-D
conversion completed
1 : Interrupt request at ADT
input falling
Not used (returns “0” when read)
b7
b0
Comparator
A-D control circuit
ADT/A-D interrupt request
AV
SS
V
REF
P6
0
/AN
0
P6
1
/AN
1
Data bus
A-D control register
b7
b0
A-D conversion
register
8
Resistor ladder
C
P6
7
/AN
7
P6
6
/AN
6
P6
5
/AN
5
P6
4
/AN
4
P6
3
/AN
3
P6
2
/AN
2
P5
7
/ADT
3
相關(guān)PDF資料
PDF描述
M38257M8D-090FP Low-Power Dual 2-Input Positive-AND Gate 8-DSBGA -40 to 85
M38257M8D-091FP Low-Power Dual Bus Buffer Gate With 3-State Outputs 8-DSBGA -40 to 85
M38257M8D-097FP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38258MCM Quadruple Bus Buffer Gate With 3-State Outputs 14-SOIC -40 to 85
M38258MCMXXXGP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38257E8FP 制造商:Renesas Electronics Corporation 功能描述:8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP100
M38257E8FS 功能描述:IC 740 MCU OTP 32K 100-PQFP 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:160 系列:S08 核心處理器:S08 芯體尺寸:8-位 速度:40MHz 連通性:I²C,LIN,SCI,SPI 外圍設(shè)備:LCD,LVD,POR,PWM,WDT 輸入/輸出數(shù):53 程序存儲器容量:32KB(32K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1.9K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 12x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:64-LQFP 包裝:托盤
M38258MCM084 制造商:Panasonic Industrial Company 功能描述:IC
M3826 功能描述:電纜固定件和配件 LTRSCG 1000 BLACK RoHS:否 制造商:Heyco 類型:Cable Grips, Liquid Tight 材料:Nylon 顏色:Black 安裝方法:Cable 最大光束直徑:11.4 mm 抗拉強(qiáng)度:
M3826 BK001 制造商:Alpha Wire Company 功能描述:CBL 2COND 16AWG BLK 1000'