C8051F537-IT Silicon Laboratories Inc, C8051F537-IT Datasheet - Page 73
![IC 8051 MCU 2K FLASH 20TSSOP](/photos/12/46/124608/silicon_laboratories_inc-20-tssop_sml.jpg)
C8051F537-IT
Manufacturer Part Number
C8051F537-IT
Description
IC 8051 MCU 2K FLASH 20TSSOP
Manufacturer
Silicon Laboratories Inc
Series
C8051F53xr
Specifications of C8051F537-IT
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
2KB (2K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.25 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
336-1401
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F537-IT
Manufacturer:
Silicon Labs
Quantity:
135
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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 119 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:
Reserved Reserved
R/W
Bit7
ZTCEN: Zero-TempCo Bias Enable Bit.
This bit must be set to 1b before entering oscillator suspend mode.
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
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
C8051F52x/F52xA/F53x/F53xA
Rev. 1.3
REFSL
R/W
Bit3
TEMPE
R/W
Bit2
BIASE
R/W
Bit1
REF
input and as an output for
REFBE
R/W
Bit0
REF
SFR Address:
00000000
Reset Value
pin.
0xD1
73
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