C8051F501-IQ Silicon Laboratories Inc, C8051F501-IQ Datasheet - Page 74

• Manufacturer Part Number: C8051F501-IQ
• Description: IC 8051 MCU 64K FLASH 48-QFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F50xr

Specifications of C8051F501-IQ

• Program Memory Type: FLASH
• Program Memory Size: 64KB (64K 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: 336-1512

C8051F50x/F51x
SFR Definition 8.1. REF0CN: Reference Control
SFR Address = 0xD1; SFR Page = 0x00
74
Name
Reset
7:6
Bit
Type
5
4
3
2
1
0
Bit
Unused
TEMPE
ZTCEN
REFBE
REFSL
REFLV
BIASE
Name
R
7
0
Read = 00b; Write = don’t care.
Zero Temperature Coefficient Bias Enable Bit.
This bit must be set to 1b before entering oscillator suspend mode.
0: ZeroTC Bias Generator automatically enabled when required.
1: ZeroTC Bias Generator forced on.
Voltage Reference Output Level Select.
This bit selects the output voltage level for the internal voltage reference
0: Internal voltage reference set to 1.5 V.
1: Internal voltage reference set to 2.20 V.
Voltage Reference Select.
This bit selects the ADCs voltage reference.
0: V
1: V
Temperature Sensor Enable Bit.
0: Internal Temperature Sensor off.
1: Internal Temperature Sensor on.
Internal Analog Bias Generator Enable Bit.
0: Internal Bias Generator off.
1: Internal Bias Generator on.
On-chip Reference Buffer Enable Bit.
0: On-chip Reference Buffer off.
1: On-chip Reference Buffer on. Internal voltage reference driven on the V
REF
DD
R
used as voltage reference.
6
0
pin used as voltage reference.
ZTCEN
R
5
0
REFLV
Rev. 1.2
R
4
0
Function
REFSL
R/W
3
0
TEMPE
R/W
2
0
BIASE
R/W
1
0
REF
REFBE
pin.
R/W
0
0