C8051F343-GMR Silicon Labs, C8051F343-GMR Datasheet - Page 271
C8051F343-GMR
Manufacturer Part Number
C8051F343-GMR
Description
8-bit Microcontrollers - MCU 48 MIPS 32KB 10 ADC
Manufacturer
Silicon Labs
Datasheet
1.C8051F349-GMR.pdf
(276 pages)
Specifications of C8051F343-GMR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
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23. C2 Interface
C8051F34x devices include an on-chip Silicon Labs 2-Wire (C2) debug interface to allow Flash program-
ming and in-system debugging with the production part installed in the end application. The C2 interface
uses a clock signal (C2CK) and a bi-directional C2 data signal (C2D) to transfer information between the
device and a host system. See the C2 Interface Specification for details on the C2 protocol.
23.1. C2 Interface Registers
The following describes the C2 registers necessary to perform Flash programming functions through the
C2 interface. All C2 registers are accessed through the C2 interface as described in the C2 Interface Spec-
ification.
Bits7–0: The C2ADD register is accessed via the C2 interface to select the target Data register for
This read-only register returns the 8-bit device ID: 0x0F (C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D).
Address
Bit7
Bit7
0xAD
0x00
0x01
0x02
C2 Data Read and Data Write commands.
Selects the C2 Flash Programming Control register for Data Read/Write instructions
Bit6
Bit6
Selects the C2 Flash Programming Data register for Data Read/Write instructions
C2 Register Definition 23.2. DEVICEID: C2 Device ID
C2 Register Definition 23.1. C2ADD: C2 Address
Bit5
Bit5
Selects the Revision ID register for Data Read instructions
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
Selects the Device ID register for Data Read instructions
Bit4
Bit4
Rev. 1.3
Bit3
Bit3
Description
Bit2
Bit2
Bit1
Bit1
Bit0
Bit0
00000000
Reset Value
Reset Value
00001111
271
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