IC 8051 MCU 64K FLASH 64TQFP

C8051F021-GQ

Manufacturer Part NumberC8051F021-GQ
DescriptionIC 8051 MCU 64K FLASH 64TQFP
ManufacturerSilicon Laboratories Inc
SeriesC8051F02x
C8051F021-GQ datasheets
 


Specifications of C8051F021-GQ

Program Memory TypeFLASHProgram Memory Size64KB (64K x 8)
Package / Case64-TQFP, 64-VQFPCore Processor8051
Core Size8-BitSpeed25MHz
ConnectivityEBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USARTPeripheralsBrown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o32Ram Size4.25K x 8
Voltage - Supply (vcc/vdd)2.7 V ~ 3.6 VData ConvertersA/D 8x8b, 8x12b; D/A 2x12b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Processor SeriesC8051F0xCore8051
Data Bus Width8 bitData Ram Size4.25 KB
Interface TypeI2C/SMBus/SPI/UARTMaximum Clock Frequency25 MHz
Number Of Programmable I/os32Number Of Timers4
Operating Supply Voltage2.7 V to 3.6 VMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMT3rd Party Development ToolsPK51, CA51, A51, ULINK2
Development Tools By SupplierC8051F020DKMinimum Operating Temperature- 40 C
On-chip Adc8-ch x 8-bit or 8-ch x 12-bitOn-chip Dac2-ch x 12-bit
No. Of I/o's32Ram Memory Size4352Byte
Cpu Speed25MHzNo. Of Timers5
No. Of Pwm Channels5Rohs CompliantYes
Data Rom Size64 KBA/d Bit Size12 bit
A/d Channels Available8Height1.05 mm
Length10 mmSupply Voltage (max)3.6 V
Supply Voltage (min)2.7 VWidth10 mm
Lead Free Status / RoHS StatusLead free / RoHS CompliantFor Use With336-1200 - DEV KIT FOR F020/F021/F022/F023
Eeprom Size-Other names336-1201
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Figure 14.3. OSCXCN: External Oscillator Control Register
R/W
R/W
R/W
XTLVLD XOSCMD2 XOSCMD1 XOSCMD0
Bit7
Bit6
Bit5
Bit7:
XTLVLD: Crystal Oscillator Valid Flag
(Valid only when XOSCMD = 11x.)
0: Crystal Oscillator is unused or not yet stable
1: Crystal Oscillator is running and stable
Bits6-4:
XOSCMD2-0: External Oscillator Mode Bits
00x: Off. XTAL1 pin is grounded internally.
010: System Clock from External CMOS Clock on XTAL1 pin.
011: System Clock from External CMOS Clock on XTAL1 pin divided by 2.
10x: RC/C Oscillator Mode with divide by 2 stage.
110: Crystal Oscillator Mode
111: Crystal Oscillator Mode with divide by 2 stage.
Bit3:
RESERVED. Read = undefined, Write = don't care
Bits2-0:
XFCN2-0: External Oscillator Frequency Control Bits
000-111:
XFCN
Crystal (XOSCMD = 11x)
000
f < 12 kHz
12 kHz < f  30 kHz
001
30 kHz < f  95 kHz
010
95 kHz < f  270 kHz
011
270 kHz < f  720 kHz
100
720 kHz < f  2.2 MHz
101
2.2 MHz < f  6.7 MHz
110
111
f > 6.7 MHz
CRYSTAL MODE (Circuit from Figure 14.1, Option 1; XOSCMD = 11x)
Choose XFCN value to match the crystal or ceramic resonator frequency.
RC MODE (Circuit from Figure 14.1, Option 2; XOSCMD = 10x)
Choose oscillation frequency range where:
3
f = 1.23(10
) / (R * C), where
f = frequency of oscillation in MHz
C = capacitor value in pF
R = Pull-up resistor value in k
C MODE (Circuit from Figure 14.1, Option 3; XOSCMD = 10x)
Choose K Factor (KF) for the oscillation frequency desired:
f = KF / (C * AV+), where
f = frequency of oscillation in MHz
C = capacitor value on XTAL1, XTAL2 pins in pF
AV+ = Analog Power Supply on MCU in volts
C8051F020/1/2/3
R/W
R/W
R/W
R/W
-
XFCN2
XFCN1
Bit4
Bit3
Bit2
Bit1
RC (XOSCMD = 10x)
f < 25 kHz
25 kHz < f50 kHz
50 kHz < f  100 kHz
100 kHz < f  200 kHz
200 kHz < f  400 kHz
400 kHz < f  800 kHz
800 kHz < f  1.6 MHz
1.6 MHz < f  3.2 MHz
Rev. 1.4
R/W
Reset Value
XFCN0
00000000
Bit0
SFR Address:
0xB1
C (XOSCMD = 10x)
K Factor = 0.44
K Factor = 1.4
K Factor = 4.4
K Factor = 13
K Factor = 38
K Factor = 100
K Factor = 420
K Factor = 1400
137