C8051F505-IQ Silicon Laboratories Inc, C8051F505-IQ Datasheet - Page 173

• Manufacturer Part Number: C8051F505-IQ
• Description: IC 8051 MCU 32K FLASH 48-QFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F50xr

Specifications of C8051F505-IQ

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 48-QFP
• Mfg Application Notes: LIN Bootloader AppNote
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 40
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.25 V
• Data Converters: A/D 32x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: C8051F5x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4.25 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 40
• Number Of Timers: 4
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F500DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 32-ch x 12-bit
• Package: 48PQFP
• Device Core: 8051
• Family Name: C8051F50x
• Maximum Speed: 50 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1527 - KIT DEV FOR C8051F50X
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1520

SFR Definition 19.6. OSCXCN: External Oscillator Control
SFR Address = 0x9F; SFR Page = 0x0F;
Name
Reset
Bit
6:4 XOSCMD[2:0] External Oscillator Mode Select.
2:0
Type
7
3
Bit
XFCN[2:0]
XTLVLD
XTLVLD
Unused
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 = 0b; Write =0b
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
011
100
101
110
111
6
0
XOSCMD[2:0]
Crystal Mode
f  32 kHz
32 kHz  f  84 kHz
84 kHz  f  225 kHz
225 kHz  f  590 kHz 100 kHz  f  200 kHz
590 kHz  f  1.5 MHz 200 kHz  f  400 kHz
1.5 MHz  f  4 MHz
4 MHz  f  10 MHz
10 MHz  f  30 MHz
R/W
5
0
Rev. 1.2
4
0
RC Mode
f  25 kHz
25 kHz  f  50 kHz
50 kHz  f  100 kHz
400 kHz  f  800 kHz
800 kHz  f  1.6 MHz
1.6 MHz  f  3.2 MHz
Function
R
3
0
C8051F50x/F51x
2
0
C Mode
K Factor = 0.87
K Factor = 2.6
K Factor = 7.7
K Factor = 22
K Factor = 65
K Factor = 180
K Factor = 664
K Factor = 1590
XFCN[2:0]
R/W
1
0
0
0
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