参数资料
型号: KIT13892VLEVBEJ
厂商: Freescale Semiconductor
文件页数: 70/158页
文件大小: 0K
描述: KIT EVAL FOR MC13892
标准包装: 1
主要目的: 电源管理和用户界面
嵌入式:
已用 IC / 零件: MC13892
主要属性: 10 位 ADC,4 输出降压转换器,12 LDO
次要属性: 与 i.MX51、i.MX37、i.MX35、i.MX27 一起使用
已供物品: 板,线缆,文档
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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