参数资料
型号: EVAL-ADUC7128QSPZ
厂商: Analog Devices Inc
文件页数: 43/92页
文件大小: 0K
描述: KIT DEV FOR ADUC7128
产品培训模块: ARM7 Applications & Tools
Intro to ARM7 Core & Microconverters
设计资源: ADUC7128 Dev System Schematic
ADUC7128 Gerber Files
标准包装: 1
系列: QuickStart™ PLUS 套件
类型: MCU
适用于相关产品: ADuC7128
所含物品: 评估板、电源、缆线、软件、仿真器和说明文档
产品目录页面: 739 (CN2011-ZH PDF)
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ADuC7128/ADuC7129
Rev. 0 | Page 48 of 92
Comparator Interface
The comparator interface consists of a 16-bit MMR, CMPCON, described in Table 57.
Table 57. CMPCON MMR Bit Designations
Bit
Value
Name
Description
15:11
Reserved.
10
CMPEN
Comparator Enable Bit.
Set by user to enable the comparator.
Cleared by user to disable the comparator.
Note: A comparator interrupt is generated on the enable of the comparator. This should be cleared in the
user software.
Comparator Negative Input Select Bits.
00
AVDD/2.
01
ADC3 input.
10
VREF × 0.6.
9:8
11
CMPIN
Reserved.
Comparator Output Configuration Bits.
00
IRQ and PLA connections disabled.
01
IRQ and PLA connections disabled.
10
PLA connections enabled.
7:6
11
CMPOC
IRQ connections enabled.
5
CMPOL
Comparator Output Logic State Bit.
When low, the comparator output is high when the positive input (CMP0) is above the negative
input (CMP1).
When high, the comparator output is high when the positive input is below the negative input.
Response Time.
00
5 μs response time typical for large signals (2.5 V differential).
17 μs response time typical for small signals (0.65 mV differential).
01
Reserved.
10
Reserved.
4:3
11
CMPRES
3 μs response time typical for any signal type.
2
CMPHYST
Comparator Hysteresis Bit.
Set by user to have a hysteresis of about 7.5 mV.
Cleared by user to have no hysteresis.
1
CMPORI
Comparator Output Rising Edge Interrupt.
Set automatically when a rising edge occurs on the monitored voltage (CMP0).
Cleared by user by writing a 1 to this bit.
0
CMPOFI
Comparator Output Falling Edge Interrupt.
Set automatically when a falling edge occurs on the monitored voltage (CMP0).
Cleared by user.
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