參數(shù)資料
型號(hào): AD7877ACPZ-REEL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 28/45頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT TOUCHSCREEN 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
類(lèi)型: 電阻
觸摸面板接口: 4 線
輸入數(shù)/鍵: 1 TSC
分辨率(位): 12 b
評(píng)估套件: 可供
數(shù)據(jù)接口: 串行,SPI?
數(shù)據(jù)速率/采樣率 (SPS,BPS): 125k
電壓基準(zhǔn): 外部,內(nèi)部
電源電壓: 2.7 V ~ 5.25 V
電流 - 電源: 1µA
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤(pán),CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ
包裝: 帶卷 (TR)
配用: EVAL-AD7877EBZ-ND - BOARD EVALUATION FOR AD7877
Data Sheet
AD7877
Rev. D | Page 33 of 44
REGISTER MAPS
Table 13. Write Register Map
Register Address
Binary
WADD3
WADD2
WADD1
WADD0
Hex
Register Name
Description
0
None
Unused; writing to this address has no effect
0
1
Control Register 1
Contains ADC channel address, register read address, and ADC
mode
0
1
0
2
Control Register 2
Contains ADC averaging, acquisition time, power management,
first conversion delay, STOPACQ polarity, and reference and timer
settings
0
1
3
Alert
status/enable
register
Contains status of high/low limit comparisons for TEMP1, BAT1,
BAT2, and AUX1, and enable bits to allow these channels to
become interrupt sources
0
1
0
4
AUX1 high limit
User-programmable AUX1 upper limit
0
1
0
1
5
AUX1 low limit
User-programmable AUX1 lower limit
0
1
0
6
BAT1 high limit
User-programmable BAT1 upper limit
0
1
7
BAT1 low limit
User-programmable BAT1 lower limit
1
0
8
BAT2 high limit
User-programmable BAT2 upper limit
1
0
1
9
BAT2 low limit
User-programmable BAT2 lower limit
1
0
1
0
A
TEMP1 low limit
User-programmable TEMP1 lower limit
1
0
1
B
TEMP1 high limit
User-programmable TEMP1 upper limit
1
0
C
Sequencer
Register 0
Contains channel selection data for slave mode (software)
sequencing
1
0
1
D
Sequencer
Register 1
Contains channel selection data for master mode (hardware)
sequencing
1
0
E
DAC register
Contains DAC data and setup information
1
F
Extended write
Not a physical register; enables writing to extended writing map
Table 14. Extended Writing Map
Register Address
Binary
EADD3
EADD2
EADD1
EADD0
Hex
Register Name
Description
0
GPIO Control
Register 1
Contains polarity, direction, enabling, and interrupt enabling
settings for GPIO1 and GPIO2
0
1
GPIO Control
Register 2
Contains polarity, direction, enabling, and interrupt enabling
settings for GPIO3 and GPIO4
0
1
0
2
GPIO data
Contains GPIO1 to GPIO4 data
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