參數(shù)資料
型號: M37532M4-A17GP
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
文件頁數(shù): 31/50頁
文件大?。?/td> 524K
代理商: M37532M4-A17GP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
7532 Group
MITSUBISHI MICROCOMPUTERS
31
A-D Converter
The functional blocks of the A-D converter are described below.
[A-D conversion register] AD
The A-D conversion register is a read-only register that stores the
result of A-D conversion. Do not read out this register during an A-D
conversion.
[A-D control register] ADCON
The A-D control register controls the A-D converter. Bit 2 to 0 are
analog input pin selection bits. Bit 4 is the AD conversion completion
bit. The value of this bit remains at “0” during A-D conversion, and
changes to “1” at completion of A-D conversion.
A-D conversion is started by setting this bit to “0”.
[Comparison voltage generator]
The comparison voltage generator divides the voltage between V
SS
and V
REF
by 1024 by a resistor ladder, and outputs the divided volt-
ages. Since the generator is disconnected from V
REF
pin and V
SS
pin, current is not flowing into the resistor ladder.
[Channel Selector]
The channel selector selects one of ports P2
7
/AN
7
to P2
0
/AN
0,
and
inputs the voltage to the comparator.
[Comparator and control circuit]
The comparator and control circuit compares an analog input volt-
age with the comparison voltage and stores its result into the A-D
conversion register. When A-D conversion is completed, the control
circuit sets the AD conversion completion bit and the AD interrupt
request bit to “1”. Because the comparator is constructed linked to a
capacitor, set f(X
IN
) to 500 kHz or more during A-D conversion.
Fig. 34 Structure of A-D control register
Fig. 35 Structure of A-D conversion register
Fig. 36 Block diagram of A-D converter
A-D control register
(ADCON : address 0034
16
)
Not used (returns “0” when read)
AD conversion completion bit
0 : Conversion in progress
1 : Conversion completed
Not used (returns “0” when read)
b7 b0
Analog input pin selection bits
000 : P2
0
/AN
0
001 : P2
1
/AN
1
010 : P2
2
/AN
2
011 : P2
3
/AN
3
100 : P2
4
/AN
4
101 : P2
5
/AN
5
110 : P2
6
/AN
6
111 : P2
7
/AN
7
Read 8-bit (Read only address 0035
16
)
b7
b0
b9
b8
b7
b6
b5
b4
b3
b2
(Address 0035
16
)
Read 10-bit (read in order address 0036
16
, 0035
16
)
b7
b0
b9
b8
(Address 0036
16
)
b7
b0
b7
b6
b5
b4
b3
b2
b1
b0
(Address 0035
16
)
High-order 6-bit of address 0036
16
returns “0” when read.
A-D control register
(Address 0034
16
)
C
A-D control circuit
Resistor ladder
V
SS
Comparator
A-D interrupt request
b7
b0
Data bus
3
10
P2
0
/AN
0
P2
1
/AN
1
P2
2
/AN
2
P2
3
/AN
3
P2
4
/AN
4
P2
5
/AN
5
P2
6
/AN
6
P2
7
/AN
7
A-D conversion register (low-order)
(Address 0036
16
)
(Address 0035
16
)
A-D conversion register (high-order)
V
REF
相關PDF資料
PDF描述
M37532RSS SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37532 Single Chip 8 Bits CMOS Microcomputer(8位單片機)
M37536M4 SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37536RSS SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37536E8SP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
相關代理商/技術參數(shù)
參數(shù)描述
M37532M4-XXXFP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
M37532M4-XXXGP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
M37532RSS 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37532T-PTC 功能描述:DEV 42-PIN 1.778MM SDIP TO 40-PI RoHS:否 類別:編程器,開發(fā)系統(tǒng) >> 配件 系列:- 標準包裝:1 系列:- 附件類型:適配器板 適用于相關產品:RCB230,RCB231,RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE
M37534E4FP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER