C8051F302 Silicon Laboratories Inc, C8051F302 Datasheet - Page 92
C8051F302
Manufacturer Part Number
C8051F302
Description
IC 8051 MCU 8K FLASH 11MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F30xr
Specifications of C8051F302
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
8
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
11-VQFN
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
I2C, SMBus, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
8
Number Of Timers
16 bit
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Lead Free Status / Rohs Status
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F302-GMR
Manufacturer:
SiliconL
Quantity:
3 000
Company:
Part Number:
C8051F302-GMR
Manufacturer:
SILICON
Quantity:
5 000
Part Number:
C8051F302-GMR
Manufacturer:
SILICONLABS/芯科
Quantity:
20 000
C8051F300/1/2/3/4/5
92
Bit7:
Bits6-4:
Bit3:
Bits2-0:
CRYSTAL MODE (Circuit from Figure 11.1, Option 1; XOSCMD = 11x)
RC MODE (Circuit from Figure 11.1, Option 2; XOSCMD = 10x)
C MODE (Circuit from Figure 11.1, Option 3; XOSCMD = 10x)
XTLVLD XOSCMD2 XOSCMD1 XOSCMD0
Bit7
R
XTLVLD: 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.
XOSCMD2-0: External Oscillator Mode Bits.
00x: External Oscillator circuit off.
010: External CMOS Clock Mode.
011: External CMOS Clock Mode with divide by 2 stage.
100: RC Oscillator Mode with divide by 2 stage.
101: Capacitor Oscillator Mode with divide by 2 stage.
110: Crystal Oscillator Mode.
111: Crystal Oscillator Mode with divide by 2 stage.
RESERVED. Read = 0, Write = don't care.
XFCN2-0: External Oscillator Frequency Control Bits.
000-111: See table below:
Choose XFCN value to match crystal frequency.
Choose XFCN value to match frequency range:
f = 1.23(10
f = frequency of oscillation in MHz
C = capacitor value in pF
R = Pull-up resistor value in kΩ
Choose K Factor (KF) for the oscillation frequency desired:
f = KF / (C * VDD), where
f = frequency of oscillation in MHz
C = capacitor value the XTAL2 pin in pF
VDD = Power Supply on MCU in volts
XFCN
000
001
010
011
100
101
110
111
R/W
Bit6
Figure 11.4. OSCXCN: External Oscillator Control Register
3
) / (R * C), where
Crystal (XOSCMD = 11x)
R/W
Bit5
590kHz < f ≤ 1.5MHz
225kHz < f ≤ 590kHz
10MHz < f ≤ 30MHz
1.5MHz < f ≤ 4MHz
84kHz < f ≤ 225kHz
4MHz < f ≤ 10MHz
32kHz < f ≤ 84kHz
f ≤ 32kHz
R/W
Bit4
Rev. 2.3
Bit3
R
-
RC (XOSCMD = 10x)
1.6MHz < f ≤ 3.2MHz
800kHz < f ≤ 1.6MHz
200kHz < f ≤ 400kHz
400kHz < f ≤ 800kHz
100kHz < f ≤ 200kHz
50kHz < f ≤ 100kHz
25kHz < f ≤ 50kHz
f ≤ 25kHz
XFCN2
R/W
Bit2
XFCN1
R/W
Bit1
C (XOSCMD = 10x)
K Factor = 1590
K Factor = 0.87
K Factor = 180
K Factor = 664
K Factor = 2.6
K Factor = 7.7
K Factor = 22
K Factor = 65
XFCN0
R/W
Bit0
SFR Address:
00000000
Reset Value
0xB1