參數(shù)資料
型號(hào)： MB90223
廠商： Fujitsu Limited
英文描述： 8-Bit Proprietary Microcontroller(8位專用微控制器)
中文描述： 8位微控制器專利（8位專用微控制器）
文件頁(yè)數(shù)： 39/105頁(yè)
文件大?。?/td> 1130K
代理商： MB90223
39
MB90220 Series
3. A/D Converter
The A/D converter converts analog input voltage into a digital value. The features of this module are described
below:
Conversion time: 6.125
μ
s/channel (min.) (with machine clock running at 16 MHz)
Uses RC-type sequential comparison and conversion method with built-in sample and hold circuit
10-bit resolution
Analog input can be selected by software from among 16 channels
Single-conversion mode: Selects and converts one channel.
Scan conversion mode: Converts several consecutive channels (up to 16 can be programmed).
One-shot mode: Converts the specified channel once and terminates.
Continuous conversion mode: Repeatedly converts the specified channel.
Stop conversion mode: Pauses after converting one channel and waits until the next startup (permits
synchronization of start of conversion).
When A/D conversion is completed, an “A/D conversion complete” interrupt request can be issued to the CPU.
Because the generation of this interrupt can be used to start up the EI
2
OS and transfer the A/D conversion
results to memory, this function is suitable for continuous processing.
Startup triggers can be selected from among software, an external trigger (falling edge), and a timer (rising
edge).
(1) Register Configuration
bit7
ANS3
bit6
ANS2
bit5
ANS1
bit4
ANS0
bit3
ANE3
bit2
ANE2
bit1
ANE1
ANE0
bit0
000032
H
ADCH
00000000
B
bit15
—
bit14
—
bit13
—
bit12
Reserved
bit11
MOD1
bit10
MOD0
bit9
STS1
STS0
bit8
(R/W)
(—)
(R/W)
(—)
(—)
(W)
(R/W)
(R/W)
BUSY
INT
INTE
PAUS
—
—
STRT
(—)
(R/W)
(W)
(R/W)
(R/W)
(R/W)
(—)
(R/W)
D7
D6
D5
D4
D3
D2
D1
D0
000033
H
ADMD
- - - X0000
B
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
000034
H
ADCS
0000 - - 00
B
XXXXXXXX
B
000036
H
ADCD
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Register name Address
This register specfies the A/D converter conversion channel.
This register specfies the A/D converter operation mode and the startup source.
This register is the A/D converter control and status register.
Note: Program “0” to bit 12 when write. Read value is indeterminated.
This register stores the A/D converter conversion data.
Register name Address
Register name Address
Register name Address
Initial value
Initial value
Initial value
Initial value
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
Reserved
(R)
(R)
(R)
(R)
(R)
(R)
(R)
(R)
A/D Channel Setting Register (ADCH)
A/D Mode Register (ADMD)
A/D Control Status Register (ADCS)
A/D Data Register (ADCD)
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