C8051F360DK Silicon Laboratories Inc, C8051F360DK Datasheet - Page 286

• 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
24.2. C2 Pin Sharing
The C2 protocol allows the C2 pins to be shared with user functions so that in-system debugging and
Flash programming functions may be performed. This is possible because C2 communication is typically
performed when the device is in the halt state, where all on-chip peripherals and user software are stalled.
In this halted state, the C2 interface can safely ‘borrow’ the C2CK (/RST) and C2D (P4.6 on C8051F360/3
devices, P3.0 on C8051F361/2/4/5/6/7/8/9 devices) pins. In most applications, external resistors are
required to isolate C2 interface traffic from the user application. A typical isolation configuration is shown in
Figure 24.1.
The configuration in Figure 24.1 assumes the following:
Additional resistors may be necessary depending on the specific application.
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1. The user input (b) cannot change state while the target device is halted.
2. The /RST pin on the target device is used as an input only.
/Reset (a)
Output (c)
Input (b)
Figure 24.1. Typical C2 Pin Sharing
C2 Interface Master
Rev. 1.0
C2CK
C2D
C8051Fxxx