参数资料
型号: MC13892VLR2
厂商: Freescale Semiconductor
文件页数: 70/158页
文件大小: 0K
描述: IC PMU I.MX51/37/35/27 186MAPBGA
标准包装: 1,000
应用: 电池管理,显示器(LED 驱动器),手持/移动设备,电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 186-LFBGA
供应商设备封装: 186-PBGA(12x12)
包装: 带卷 (TR)
FUNCTIONAL DEVICE OPERATION
OPERATING MODES
Table 40. GPO Control Bits
SPI Bit
GPOxEN
GPOxSTBY
GPO Control
GPOx enable
GPOx controlled by STANDBY
x = 1, 2, 3, or 4
Table 41. GPO Control Scheme
GPOxEN
0
1
1
1
GPOxSTBY
X
0
1
1
STANDBY
X
X
0
1
Output GPOx
Low
High
High
Low
Notes
69. GPO1 is automatically made active high when a charger is
detected, see Battery Interface and Control for more information.
The GPO1 output is intended to be used for battery thermistor biasing. For accurate thermistor reading by the ADC, the output
resistance of the GPO1 driver is of importance; see ADC Subsystem .
Table 42. GPO1 Driver Output Characteristics
Parameter
GPO1 Output Impedance
Condition
Output VCORE Impedance to VCORE
Min
200
Typ
Max
500
Units
Ohm
Finally, a muxing option is included to allow GPO4 to be configured for a muxed connection into Channel 7 of the GP ADC.
As an application example, for a dual light sensor application, Channel 7 can be toggled between the ADIN7 (ADINSEL7 = 00)
and GPO4 (ADINSEL7 = 11) for convenient connectivity and monitoring of two sensors. The GPO4 pin is configured for ADC
input mode by default (GPO4ADIN = 1) so that the GPO driver stage is high-impedance at power up. The GPO4 pin can be
configured by software for GPO operation with GPO4ADIN = 0. Refer to ADC Subsystem for GP ADC details.
MC13892
Analog Integrated Circuit Device Data
70
Freescale Semiconductor
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