C8051F704-GM Silicon Laboratories Inc, C8051F704-GM Datasheet - Page 304

• Manufacturer Part Number: C8051F704-GM
• Description: IC 8051 MCU 15K FLASH 48-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F70xr

Specifications of C8051F704-GM

• Program Memory Type: FLASH
• Program Memory Size: 15KB (15K x 8)
• Package / Case: 48-QFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Cap Sense, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 39
• Eeprom Size: 32 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F7x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 39
• Number Of Timers: 4 x 16 bit
• Operating Supply Voltage: 1.8 V to 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F700DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1635 - DEV KIT FOR C8051F700
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1610-5

C8051F70x/71x
35.2. C2CK Pin Sharing
The C2CK pin is shared with the RST signal on this device family. If the RST pin is used by other parts of
the system, debugging and programming the device can still be accomplished without disrupting the rest of
the system. If this is desired, it is normally necessary to add a resistor to isolate the system’s reset line
from the C2CK signal. This external resistors would not be necessary for production boards, where debug-
ging capabilities are not needed. A typical isolation configuration is shown in Figure 35.1.
The configuration in Figure 35.1 assumes the RST pin on the target device is used as an input only. Addi-
tional resistors may be necessary depending on the specific application.
304
RST
Figure 35.1. Typical C2CK Pin Sharing
C2 Interface Master
Rev. 1.0
C2CK
C2D