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68HC705SB7 Datasheet(PDF) 98 Page - Freescale Semiconductor, Inc |
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68HC705SB7 Datasheet(HTML) 98 Page - Freescale Semiconductor, Inc |
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98 / 170 page  GENERAL RELEASE SPECIFICATION August 27, 1998 MOTOROLA TEMPERATURE SENSOR MC68HC05SB7 14-2 REV 2.1 14.2 EXTERNAL TEMPERATURE SENSOR In fast charge control applications, where close monitoring of the charging pro- cess is required (especially temperature), an external temperature sensor (ther- mistor) is recommended. This external thermistor connects to the TM pin (see Figure 14-2), and its voltage measured via channel 4 (AN4, see Analog Sub- system section) of the Analog Subsystem. For faster temperature response time and more accurate measurement (required for fast charge control), the thermistor should be mounted directly to the battery pack. Figure 14-2. External Temperature Sensor Connection 14.3 TEMPERATURE SENSOR OPERATION DURING WAIT MODE During WAIT mode the temperature sensor continues to operate normally. 14.4 TEMPERATURE SENSOR OPERATION DURING STOP MODE In STOP mode the temperature sensor is disabled. Batt+ Batt– VDD TM VM MC68HC05SB7 Thermistor |
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