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| Company | Trenz Electronic GmbH |
|---|---|
| PCN Number | PCN-20230616 |
| Title | TE0741-04 to TE0741-05 Hardware Revision Change |
| Subject | Hardware Revision Change |
| Issue Date | 2023-0706-0127 |
Products Affected
This change affects all Trenz Electronic TE0741 SoMs: TE0741-04*.
Affected Product | Replacement |
|---|---|
| TE0741-04-A2C-1-A | TE0741-05-A2C-1-A |
| TE0741-04-A2I-1-A | TE0741-05-A2I-1-A |
| TE0741-04-B2C-1-AF | TE0741-05-B2C-1-AF |
| TE0741-04-B2C-1-A | TE0741-05-B2C-1-A |
| TE0741-04-B2I-1-A | TE0741-05-B2I-1-A |
| TE0741-04-D2C-1-A | TE0741-05-D2C-1-A |
| TE0741-04-D2I-1-A | TE0741-05-D2I-1-A |
| TE0741-04-G2C-1-A | TE0741-05-G2C-1-A |
| TE0741-04-G2I-1-A | TE0741-05-G2I-1-A |
| TE0741-04-B3E-1-AF | - |
Changes
#1 Added pull-up resistor
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R34 for signal net "EN1".
Type: Schematic Change
Reason: Remove floating signal situation.
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Reason: Remove floating signal situations and enable signal measurementdetection by CPLD.
Impact: None. Firmware reflects it but custom firmware needs to be updated by customer.
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Impact: Clock (U3) powers-up automatically when 3.3V is available. FPGA (U1) can only disable clock. FPGA-firmware-design needs to be checked by customer.
#4 Changed Load Switch TPS27081ADDCR (Q1) to Load Switch MP5077GG-Z (U17) and adapted circuit.
Type: Schematic Change
Reason: BOM Optimization.
Impact: None. Increased current output capability. Minor changes in electrical characteristics.
#5 Added external compensation (R44, R45, C102, C103) for DCDCs LTM4638 (U14, U15).
Type: Schematic Change
Reason: Improve power rail quality.
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Reason: Keep FPGA in reset while signal "PROG_B" is low during initial power-up.
Impact: None.
#7 Changed power supervisor TPS3805H33DCKR (U11) to STM6710LWB6F and adapted circuits.
Type: Schematic Change
Reason: Improved power monitoring.
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Impact: None. Improved ESD protection.
#9 Changed revision ID signal "REV_ID0" from "GND" to "3.3V".
Type: Schematic Change
Reason: Revision ID indication.
Impact: None. Firmware reflects it but custom firmware needs to be updated by customer.
#10 Added UKCA logo.
Type: PCB Change
Reason: Required for export to UK.
Impact: None.
#11 Signal trace lengths changed.
Type: PCB change
Reason: Result of changes above.
Impact: Changed trace length have to be taken into account in existing designs. The trace length for new revision shall will be available in 4x5 series pinout generator. Please check if change in trace length still matches your requirements. Adaption of carrier may be necessary.
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#12 Updated overview.
Type: Documentation Update
Reason: Documentation improvement.
Impact: None.
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#13 Updated power diagram.
Type: Documentation Update
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The revision number is shown on the top side of the PCB.
Production Shipment Schedule
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Overview
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