參數(shù)資料
型號: ADUC7032BSTZ-8V-RL
廠商: Analog Devices Inc
文件頁數(shù): 71/128頁
文件大小: 0K
描述: IC BATTERY SENSOR PREC 48-LQFP
標準包裝: 1
系列: MicroConverter® ADuC7xxx
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 20.48MHz
連通性: LIN,SPI,UART/USART
外圍設(shè)備: POR,PSM,溫度傳感器,WDT
輸入/輸出數(shù): 9
程序存儲器容量: 96KB(48K x 16)
程序存儲器類型: 閃存
RAM 容量: 1.5K x 32
電壓 - 電源 (Vcc/Vdd): 3.5 V ~ 18 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 2x16b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 105°C
封裝/外殼: 48-LQFP
包裝: 標準包裝
其它名稱: ADUC7032BSTZ-8V-RLDKR
Preliminary Technical Data
ADuC7032
Rev. PrD | Page 47 of 128
ADC GROUND SWITCH
The ADuC7032 features an integrated ground switch pin,
GND_SW located on Pin15. This switch allows the user to
dynamically disconnect ground from external devices. It allows
either a direct connection to ground, or a connection to ground
via a 20k, this additional resistor may be used to reduce the
number of external components required for an NTC circuit.
The ground switch feature may be used for reducing power
consumption on application specific boards..
An example application is shown in Figure 17. This diagram
shows an external NTC used in two modes, one using the
internal 20k resistor, and the second showing a direct
connection to ground, via the GND_SW. ADCCFG[7] controls
the connection of the ground switch to ground and
ADCMDE[6] controls the GND_SW resistance.
The possible combinations are shown in Table 18.
Table 18 : GND_SW Configuration
ADCCFG[7]
ADCMDE[6]
GND_SW
0
Floating
0
1
Floating
1
0
Direct connection to Ground
1
Connected to ground via 20k
resistor
05
99
4-
017
RREF
REG_AVDD
VTEMP
NTC
20k
REG_AVDD
VTEMP
NTC
Figure 17 : Example External Temperature Sensor Circuits
05
99
4-
018
20k
GND_SW
ADCMDE[6]
ADCCFG[7]
Figure 18: Internal Ground Switch Configuration
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