C8051T631-GM Silicon Laboratories Inc, C8051T631-GM Datasheet - Page 102

• Manufacturer Part Number: C8051T631-GM
• Description: IC MCU 8KB 20PIN QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051T63xr

Specifications of C8051T631-GM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Processor Series: C8051T6x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: UART, SPI, SMBus
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4 x 16-bit
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051T630DK
• Minimum Operating Temperature: - 40 C
• For Use With: 336-1464 - KIT DEV FOR C8051T630 FAMILY
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1459-5

C8051T630/1/2/3/4/5
SFR Definition 19.1. CLKSEL: Clock Select
SFR Address = 0xA9
102
Name
Reset
7:2
1:0
Bit
Type
Bit
CLKSL[1:0] System Clock Source Select Bits.
Unused
Name
R
7
0
Unused. Read = 000000b; Write = Don’t Care
00: SYSCLK derived from the Internal High-Frequency Oscillator and scaled per the
IFCN bits in register OSCICN.
01: SYSCLK derived from the External Oscillator circuit.
10: SYSCLK derived from the Internal Low-Frequency Oscillator and scaled per the
OSCLD bits in register OSCLCN.
11: reserved.
R
6
0
R
5
0
Rev. 1.0
R
4
0
Function
R
3
0
R
2
0
1
0
CLKSL[1:0]
R/W
0
0