C8051F351 Silicon Laboratories Inc, C8051F351 Datasheet - Page 223

• Manufacturer Part Number: C8051F351
• Description: IC 8051 MCU 8K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F35xr

Specifications of C8051F351

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x24b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

24.
C8051F350/1/2/3 devices include an on-chip Silicon Labs 2-Wire (C2) debug interface to allow Flash pro-
gramming, boundary scan functions, 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 trans-
fer information between the device and a host system. See the C2 Interface Specification for details on the
C2 protocol.
24.1. C2 Interface Registers
The following describes the C2 registers necessary to perform Flash programming and boundary scan
functions through the C2 interface. All C2 registers are accessed through the C2 interface as described in
the C2 Interface Specification.
Bits7-0:
This read-only register returns the 8-bit device ID: 0x0B (C8051F350/1/2/3).
Bit7
Bit7
C2 Interface
The C2ADD register is accessed via the C2 interface to select the target Data register for
C2 Data Read and Data Write commands.
Address
0xB4
0x00
0x01
0x02
Bit6
Bit6
Figure 24.2. DEVICEID: C2 Device ID Register
Figure 24.1. C2ADD: C2 Address Register
Bit5
Bit5
Selects the Device ID register for Data Read instructions
Selects the Revision ID register for Data Read instructions
Selects the C2 Flash Programming Control register for Data
Read/Write instructions
Selects the C2 Flash Programming Data register for Data
Read/Write instructions
Bit4
Bit4
Rev. 0.4
Bit3
Bit3
Description
Bit2
Bit2
C8051F350/1/2/3
Bit1
Bit1
Bit0
Bit0
00000000
Reset Value
Reset Value
00001011
223