C8051F337-GM Silicon Laboratories Inc, C8051F337-GM Datasheet - Page 115

• Manufacturer Part Number: C8051F337-GM
• Description: IC MCU 16K FLASH 20QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F337-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: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F336DK
• Minimum Operating Temperature: - 40 C
• For Use With: 336-1451 - ADAPTER PROGRAM TOOLSTICK F330
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1428-5

SFR Definition 19.5. OSCXCN: External Oscillator Control
SFR Address = 0xB1
Name
Reset
Bit
6:4
2:0
Type
7
3
Bit
XOSCMD[2:0] External Oscillator Mode Select.
XFCN[2:0]
UNUSED
XTLVLD
XTLVLD
Name
R
7
0
Crystal Oscillator Valid Flag.
(Read only when XOSCMD = 11x.)
0: Crystal Oscillator is unused or not yet stable.
1: Crystal Oscillator is running and stable.
00x: External Oscillator circuit off.
010: External CMOS Clock Mode.
011: External CMOS Clock Mode with divide by 2 stage.
100: RC Oscillator Mode.
101: Capacitor Oscillator Mode.
110: Crystal Oscillator Mode.
111: Crystal Oscillator Mode with divide by 2 stage.
Read = 0; Write = Don’t Care
External Oscillator Frequency Control Bits.
Set according to the desired frequency for Crystal or RC mode.
Set according to the desired K Factor for C mode.
XFCN
000
001
010
100
101
011
110
111
6
0
XOSCMD[2:0]
590 kHz < f ≤ 1.5 MHz
225 kHz < f ≤ 590 kHz
10 MHz < f ≤ 30 MHz
84 kHz < f ≤ 225 kHz
1.5 MHz < f ≤ 4 MHz
4 MHz < f ≤ 10 MHz
32 kHz < f ≤ 84 kHz
Crystal Mode
R/W
5
0
f ≤ 32 kHz
Rev.1.0
4
0
800 kHz < f ≤ 1.6 MHz
1.6 MHz < f ≤ 3.2 MHz
100 kHz < f ≤ 200 kHz
200 kHz < f ≤ 400 kHz
400 kHz < f ≤ 800 kHz
50 kHz < f ≤ 100 kHz
25 kHz < f ≤ 50 kHz
Function
R
3
0
f ≤ 25 kHz
RC Mode
C8051F336/7/8/9
2
0
XFCN[2:0]
K Factor = 1590
K Factor = 0.87
R/W
K Factor = 180
K Factor = 664
K Factor = 2.6
K Factor = 7.7
K Factor = 22
K Factor = 65
1
0
C Mode
0
0
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