C8051F360DK Silicon Laboratories Inc, C8051F360DK Datasheet - Page 283

• Manufacturer Part Number: C8051F360DK
• Description: KIT DEV FOR C8051F360 FAMILY
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F360DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F36x
• Interface Type: USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051F360, F361, F362, F363, F364, F365, F366, F367, F368, F369
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1410

C8051F360/1/2/3/4/5/6/7/8/9
23.2. C2D Port Pin Requirements
Problem
The C2D debugging port pin (shared with P4.6 for C8051F360/3 and P3.0 for C8051F361/2/4/5/6/7/8/9)
behaves differently on "REV A" devices than specified in the data sheet.
On "REV A" devices, a C2D port pin that is pulled low by the associated port pin driver will disrupt debug-
ging capability. In order to communicate with the device through the C2 interface, the value in the port latch
associated C2D port pin must be '1'.
Workaround
To workaround this problem, add a strong pull-up resistor to the C2D port pin to ensure the pin will be high
unless explicitly driven low. Furthermore, the port pin should be left in open-drain mode with a '1' in the
appropriate port latch (PnMDOUT bit = '0', Pn bit = '1') when not in use. This will allow the debugging soft-
ware to transfer data via the C2D pin as often as possible.
This behavior has been corrected on "REV B" of this device.
Rev. 1.0
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