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TC65 Hardware Interface Description
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TC65_HD_V02.000 Page 84 of 120 08.06.2006
5.2 Operating Temperatures
Table 21: Board / battery temperature
Parameter Min Typ Max Unit
Normal operation -30 +25 +70
°C
Restricted operation
4
--- --- +70 to +75 °C
Automatic shutdown
5
Temperature measured on TC65 board
Temperature measured at battery NTC
-30
-20
---
---
>+80
+60
°C
Table 22: Ambient temperature according to IEC 60068-2 (without forced air circulation)
Parameter Min Typ Max Unit
Normal operation -30 +25 +65
°C
Restricted operation
4
--- --- +65 to +75 °C
Automatic thermal shutdown
5
due to TC65 board temperature
due to battery temperature
-30
-20
---
---
+65
+60
°C
Table 23: Charging temperature
Parameter Min Typ Max Unit
Battery temperature for software controlled fast
charging (measured at battery NTC)
0 --- +45 °C
Note:
• See Chapter
3.3.4 for further information about the NTCs for on-board and battery
temperature measurement, automatic thermal shutdown and alert messages.
• When data are transmitted over GPRS the TC65 automatically reverts to a lower
Multislot Class if the temperature increases to the limit specified for normal operation
and, vice versa, returns to the higher Multislot Class if the temperature is back to normal.
For details see Chapter
3.4 “Automatic GPRS Multislot Class Change”.
4
Restricted operation allows normal mode speech calls or data transmission for limited time until automatic
thermal shutdown takes effect. The duration of emergency calls is unlimited because automatic thermal
shutdown is deferred until hang up.
5
Due to temperature measurement uncertainty, a tolerance on the stated shutdown thresholds may occur. The
possible deviation is in the range of ±3°C at the overtemperature limit and ±5°C at the undertemperature limit.
- Hardware Interface Descri 1
- Contents 3
- Figures 6
- 0 Document History 7
- 1 Introduction 10
- 1.2 Terms and Abbreviations 11
- 1.3 Type Approval 14
- 1.4 Safety Precautions 16
- 2 Product Concept 18
- 2.2 TC65 System Overview 21
- 2.3 Circuit Concept 22
- 3 Application Interface 23
- 3.1 Operating Modes 24
- 3.2 Power Supply 26
- 3.3.1 Turn on TC65 28
- 31
- Table 6: Signal states 34
- 3.3.3 Turn off TC65 36
- 3.3.4 Automatic Shutdown 39
- 3.3.4.5 Overvoltage Shutdown 41
- 3.5 Charging Control 43
- 3.5.1 Hardware Requirements 43
- 3.5.2 Software Requirements 43
- 3.5.4 Charger Requirements 45
- 3.6 Power Saving 48
- AT interface disabled 49
- AT interface enabled 49
- 3.8 RTC Backup 51
- 3.9 SIM Interface 52
- 3.10 Serial Interface ASC0 53
- 3.11 Serial Interface ASC1 55
- 3.12 USB Interface 56
- C Interface 59
- Figure 20: I 60
- 3.14 SPI Interface 61
- SPI MODE 0 SPI MODE 1 62
- SPI MODE 2 SPI MODE 3 62
- Clock phase 62
- Clock polarity 62
- 3.15 Audio Interfaces 63
- 3.15.1 Speech Processing 64
- 3.15.2 Microphone Circuit 64
- GSM module 68
- Figure 29: PCM timing 70
- 3.17 GPIO Interface 72
- 3.18 Control Signals 73
- 3.18.4 PWR_IND Signal 75
- 4 Antenna Interface 76
- Antenna 77
- 4.2 Antenna Pad 78
- 4.2.1 Suitable Cable Types 78
- 4.3 Antenna Connector 79
- 5.2 Operating Temperatures 84
- 5.3 Storage Conditions 85
- EMRG_RST 89
- 5.6 Power Supply Ratings 95
- 5.7.4 Voiceband Receive Path 101
- 5.8 Air Interface 103
- 5.9 Electrostatic Discharge 104
- 6 Mechanics 105
- Confidential / Released 106
- 7 Sample Application 111
- 8 Reference Approval 113
- 9 Appendix 115
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