Page History
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| Company | Trenz Electronic GmbH |
|---|---|
| PCN Number | PCN-20220228 |
| Title | PCNTE0720-20220228 03 to TE0720-03 04 Hardware Revision Change |
| Subject | Hardware Revision Change |
| Issue Date | JJJJMMDD |
Products Affected
This change affects all Trenz Electronic TE0720 SoMs : TE0720-of revision 03*.
Affected Product | Replacement |
|---|---|
| TE0720-03-* | TE0720-04-* |
Changes
#1
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Replace EN6347QI (U1) by MPM3840GQV-Z
Type: Schematic Change
Reason: Enpirion DCDCs are discontinued.
Impact: None.
#2 Replace EP53F8QI (U2, U3) by MPM3834CGPA
Type: Schematic Change
Reason: Enpirion DCDCs are discontinued.
Impact: None. Maximum continuous output current of DCDC increased from 1.5 A to 3 A on each rail.
#3 Replace TPS27082LDDCR (Q1) by MP5077GG-Z
Type: Schematic Change
Type: PCB Change
Reason: Part is EOL.
Reason: Components are obsolete
Impact: None.
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#4 Added power supervisor BD39040MUF (U27)
...
Type: Schematic Change
Reason: Improve the voltage rail supervision.
Impact: None.
#5 Connect BD39040MUF "PG_All" - signal U27.15 to system controller U19.C12 with pull-up resistor R67
...
.
Type: Schematic Change
Reason: Power Supervisor connection.
Impact: None.
#6 Connect BD39040MUF "WDEN" - signal U27.13
...
to system controller U19.C6
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with pull-down resistor R80
...
.
Type: Schematic Change
Reason: Power Supervisor connection.
Impact: None.
#7 Connect BD39040MUF "WDIN" - signal U27.14
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to system controller U19.N8
...
.
Type: Schematic Change
Reason: Power Supervisor connection.
Impact: None.
#8 Connect BD39040MUF "WDOUT" - signal U27.16 to system controller U19.M3
...
.
Type: PCB Schematic Change
Reason: Voltage rail supervisionPower Supervisor connection.
Impact: None.
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#9 Signal MIO8 (U5.E5) connected to system controller (U19.N7).
Type: PCB Schematic Change
Reason: ???Enable boundary scan for MIO bank 1.
Impact: ???
...
None.
#10 Added pull-down resistors R64
...
for net "ON_1V0
...
".
Type: PCB Schematic Change
Reason: Default pull-down option to delete the avoid floating states. state
Impact: None.
#5 Revised voltage supervisor U26 circuit: U26.6 (VDD) connected to 3.3VIN, added diode D3
Type: PCB Change
#11 Added pull-down resistors R65 for net "ON_1V8".
Type: Schematic Change
Reason: Default pull-down option to avoid floating states.Reason: Improve supervisor circuit
Impact: None.
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#12 Power supervisor U26 connected to 3.3VIN power rail (was 3.3V)
...
.
Type: Schematic Change
Reason: Avoid high-signal-state at U26 manual reset pin 3 without powered supervisor.
Impact: None.
#13 Added protection diode D3 to U26.3 (#MR input).
Type: PCB Schematic Change
Reason: Improve supervisor circuitAvoid voltage high-signal-state at U26 manual reset pin 3 without powered supervisor.
Impact: None.
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#14 Auxiliary information has been added on Samtec B2B connectors page.
Type: DOC Change
Reason: Improve conncector documentation.
Impact: None.
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#15 Changed PCB
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layout of power supplies.
Type: PCB Change
Reason: DCDCs with new footprints needs to be used.
Impact: None.
#9 PCB: Revised layout of Samtec B2B signals. The length of the tracks has been changed. Pinout of Samtec B2B connectors not affected
Type: PCB Change
Reason: ???
Impact: The new trace length needs to be considered for length matched busses.
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#16 Added option to install Heatsink SuperGrip (c).
Type: PCB Change
Reason: Allows heatsink usageImprove optional cooling solution.
Impact: None.
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#17 Added capacitors C7
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and C8 (100uF, 1V).
Type: PCB Change
Reason: Improve decoupling for "1V" voltage rail.
Impact: None.
#18 Changed PCB layout of Samtec B2B signals.
Type: PCB Change
Reason: Result of this PCN changes.
Impact: The length of the tracks has been changed. Pinot of Samtec B2B connectors is not affected. Changed trace length has to be taken into account in existing designs. Please, check if change in trace length still matches your requirements. Adaption of carrier may be necessary.
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Method of Identification
The model code and revision number of the module (e.g. TE0720-03 or TE0720-04) are printed on the top side of the PCB for revision 04 and is missing for revision 03.
Production Shipment Schedule
TE0720-04 could be ordered from now onThe new revision 04 will be shipped from October 2022. If the new revision is not suitable for your application and still the former revision of the board is needed, please contact us.
Contact Information
If you have any questions related to this PCN, please contact Trenz Electronics Technical Support at
- forum.trenz-electronic.de
- wiki.trenz-electronic.de
- support%trenz-electronic.de (subject = PCN-20220228)
phone
national calls: 05741 3200-0
international calls: 0049 5741 3200-0
Disclaimer
Any projected dates in this PCN are based on the most current product information at the time this PCN is being issued, but they may change due to unforeseen circumstances. For the latest schedule and any other information, please contact your local Trenz Electronic sales office, technical support or local distributor.
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