C8051F314-GQR Silicon Laboratories Inc, C8051F314-GQR Datasheet - Page 125
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C8051F314-GQR
Manufacturer Part Number
C8051F314-GQR
Description
IC 8051 MCU 8K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F31xr
Specifications of C8051F314-GQR
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
29
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
For Use With
336-1445 - ADAPTER PROGRAM TOOLSTICK F310
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
C8051F314-GQR
Manufacturer:
ST
Quantity:
15 000
Company:
Part Number:
C8051F314-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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Bit7:
Bits6–4: XOSCMD2-0: External Oscillator Mode Bits.
Bit3:
Bits2–0: XFCN2-0: External Oscillator Frequency Control Bits.
CRYSTAL MODE (Circuit from Figure 12.1, Option 1; XOSCMD = 11x)
RC MODE (Circuit from Figure 12.1, Option 2; XOSCMD = 10x)
C MODE (Circuit from Figure 12.1, 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.
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.
RESERVED. Read = 0, Write = don't care.
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 clock in MHz
C = capacitor value in pF
R = Pullup resistor value in k
Choose K Factor (KF) for the oscillation frequency desired:
f = KF / (C x V
f = frequency of clock in MHz
C = capacitor value the XTAL2 pin in pF
V
DD
XFCN
SFR Definition 12.4. OSCXCN: External Oscillator Control
000
001
010
100
101
011
110
111
= Power Supply on MCU in volts
R/W
Bit6
3
) / (R x C), where
Crystal (XOSCMD = 11x)
DD
225 kHz f 590 kHz
590 kHz f 1.5 MHz
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
R/W
), where
Bit5
f 32 kHz
R/W
Bit4
Rev. 1.7
Bit3
R
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
RC (XOSCMD = 10x)
50 kHz f 100 kHz
C8051F310/1/2/3/4/5/6/7
25 kHz f 50 kHz
f 25 kHz
XFCN2
R/W
Bit2
XFCN1
R/W
Bit1
C (XOSCMD = 10x)
K Factor = 1590
K Factor = 0.87
K Factor = 180
K Factor = 664
XFCN0
K Factor = 2.6
K Factor = 7.7
K Factor = 22
K Factor = 65
R/W
Bit0
SFR Address:
00000000
Reset Value
0xB1
125
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