C8051F334-GMR Silicon Laboratories Inc, C8051F334-GMR Datasheet - Page 205

• Manufacturer Part Number: C8051F334-GMR
• Description: IC 8051 MCU 2K FLASH 20MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F334-GMR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 2KB (2K 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 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• For Use With: 336-1451 - ADAPTER PROGRAM TOOLSTICK F330
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

20. C2 Interface
C8051F330/1/2/3/4/5 devices include an on-chip Silicon Labs 2-Wire (C2) debug interface to allow Flash
programming 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.
20.1. C2 Interface Registers
The following describes the C2 registers necessary to perform Flash programming through the C2 inter-
face. All C2 registers are accessed through the C2 interface as described in the C2 Interface Specification.
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: 0x0A (C8051F330/1/2/3/4/5).
Bit7
Bit7
C2 Data Read and Data Write commands.
Address
0xB4
0x00
0x01
0x02
Bit6
Bit6
C2 Register Definition 20.2. DEVICEID: C2 Device ID
C2 Register Definition 20.1. C2ADD: C2 Address
Bit5
Bit5
Selects the C2 Flash Programming Control register for Data
Selects the Revision ID register for Data Read instructions
Selects the C2 Flash Programming Data register for Data
Selects the Device ID register for Data Read instructions
Bit4
Bit4
Rev. 1.7
Bit3
Read/Write instructions
Read/Write instructions
Bit3
Description
Bit2
Bit2
C8051F330/1/2/3/4/5
Bit1
Bit1
Bit0
Bit0
00000000
00001010
Reset Value
Reset Value
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