C8051F530-IMR Silicon Labs, C8051F530-IMR Datasheet - Page 73

• Manufacturer Part Number: C8051F530-IMR
• Description: 8-bit Microcontrollers - MCU 8KB 12ADC 125C
• Manufacturer: Silicon Labs

Specifications of C8051F530-IMR

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Package / Case: QFN EP
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 16
• Interface Type: SPI, UART
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• On-chip Dac: No
• Processor Series: C8051
• Program Memory Type: Flash
• Factory Pack Quantity: 1500
• Supply Voltage - Max: 2.7 V, 5.25 V
• Supply Voltage - Min: 2 V, 2.7 V

Important Note About the V
the internal V
should be configured as an analog pin, and skipped by the Digital Crossbar. To configure P0.0 as an ana-
log pin, clear Bit 0 in register P0MDIN to 0. To configure the Crossbar to skip P0.0, set Bit 0 in register
P0SKIP to 1. Refer to Section “13. Port Input/Output” on page 120 for complete Port I/O configuration
details.
The TEMPE bit in register REF0CN enables/disables the temperature sensor. While disabled, the temper-
ature sensor defaults to a high impedance state and any ADC0 measurements performed on the sensor
result in meaningless data.
SFR Definition 5.1. REF0CN: Reference Control
Bits7–6: RESERVED. Read = 00b. Must write 00b.
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
*Note:
Reserved Reserved
R/W
Bit7
See Section “20.7. Internal Oscillator Suspend Mode” on page 212 for a note related to the ZTCEN bit in
ZTCEN: Zero-TempCo Bias Enable Bit*.
0: ZeroTC Bias Generator automatically enabled when needed.
1: ZeroTC Bias Generator forced on.
REFLV: 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 2.2 V.
REFSL: Voltage Reference Select.
This bit selects the source for the internal voltage reference.
0: V
1: V
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor off.
1: Internal Temperature Sensor on.
BIASE: Internal Analog Bias Generator Enable Bit.
0: Internal Analog Bias Generator automatically enabled when needed.
1: Internal Analog Bias Generator on.
REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer disabled.
1: Internal Reference Buffer enabled. Internal voltage reference driven on the V
older silicon revisions.
REF
REF
DD
. When using either an external voltage reference or the internal reference circuitry, P0.0
R/W
Bit6
used as voltage reference.
pin used as voltage reference.
ZTCEN
R/W
Bit5
REF
Pin: Port pin P0.0 is used as the external V
REFLV
R/W
Bit4
Rev. 1.4
REFSL
R/W
Bit3
TEMPE
R/W
Bit2
C8051F52x/F53x
BIASE
R/W
Bit1
REF
input and as an output for
REFBE
R/W
Bit0
REF
SFR Address:
00000000
Reset Value
pin.
0xD1
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