参数资料
型号: MB90587CPMC
元件分类: 微控制器/微处理器
英文描述: MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 1.70 MM HEIGHT, 0.65 MM PITCH, PLASTIC, LQFP-100
文件页数: 70/112页
文件大小: 2372K
代理商: MB90587CPMC
MB90580C Series
60
DS07-13710-6E
12. A/D Converter
The A/D converter converts analog input voltages to digital values. The A/D converter has the following features.
Conversion time: Minimum of 34.7
s per channel (for a 12 MHz machine clock)
Uses RC-type successive approximation conversion with a sample and hold circuit.
8/10-bit resolution
Eight program-selectable analog input channels
Single conversion mode: Selectively convert one channel.
Scan conversion mode: Continuously convert multiple channels. Maximum of 8 program selectable channels.
Continuous conversion mode : Repeatedly convert specified channels.
Stop conversion mode:Convert one channel then halt until the next activation. (Enables synchronization of the
conversion start timing.)
An A/D conversion completion interrupt request.
An A/D conversion completion interrupt request to the CPU can be generated on the completion of A/D
conversion. This interrupt can activate EI2OS to transfer the result of A/D conversion to memory and is suitable
for continuous operation.
Activation by software, external trigger (falling edge), or timer (rising edge) can be selected.
(1) Register configuration
Control status register (upper)
bit
151413121110
9
8
Address
: 000037H
BUSY INT INTE PAUS STS1 STS0 STRT
Re-
served
ADCS2
Access
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (
)
Initial value
(0)
Control status register (lower)
bit
7
6543210
Address
: 000036H
MD1 MD0 ANS2 ANS1 ANS0 ANE2 ANE1 ANE0
ADCS1
Access
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W)
Initial value
(0)
Data register (upper)
bit
151413121110
9
8
Address
: 000039H
SELB ST1
ST0
CT1
CT0
D9
D8
ADCR2
Access
(W)
(
)
(R)
Initial value
(0)
(1)
(
)
(X)
Data register (lower)
bit
7
6543210
Address
: 000038H
D7
D6
D5
D4
D3
D2
D1
D0
ADCR1
Access
(R)
Initial value
(X)
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