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USER MANUAL V0.82 

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TCM 300 / 300C / 320 / 320C User Manual V0.82  |  Page 31/43 

 

 

TCM 300 / 300C / 320 / 320C 

In Mode 0 TCM 320C is backward compatible to its predecessor TCM 220C. 

 

There are a few minor restrictions of compatibility which are listed here: 

 

Maximum current consumption 

34 mA 

43 mA 

Maximum output current of outputs  

25 mA 

2 mA 

(external driver transistor may be needed) 

Thickness of module 

4.6 mm 

5.5 mm 

Maximum voltage rating at pin7 
(TCM 320C: ADIO6; TCM 220C: IN_5) 

6 V 

3.6 V 

Minimum HIGH voltage level  

at input pins 

1.55 V 

2.0 V 

Post master function for systems with 
smart acknowledge 

No 

Yes, 15 mail boxes 

 

 

 

If RVDD is used in an application circuit a serial ferrite bead shall be used and wire length 

should be as short as possible (<3 cm). The following ferrite beads have been tested: 

74279266 (0603), 74279205 (0805) from Würth. During radio transmission and reception 

only small currents may be drawn (I<100 µA).  

Pulsed current drawn from RVDD has to be avoided. If pulsed currents are necessary, suffi-

cient blocking has to be provided.