C8051F901-GU Silicon Laboratories Inc, C8051F901-GU Datasheet - Page 170
C8051F901-GU
Manufacturer Part Number
C8051F901-GU
Description
IC MCU 8BIT 8KB FLASH 24QSOP
Manufacturer
Silicon Laboratories Inc
Series
C8051F9xxr
Specifications of C8051F901-GU
Program Memory Type
FLASH
Program Memory Size
8KB (8K x 8)
Package / Case
24-QSOP
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
0.9 V ~ 3.6 V
Data Converters
A/D 15x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F9x
Core
8051
Data Ram Size
768 B
Interface Type
UART
Maximum Clock Frequency
25 MHz
Number Of Timers
4
Operating Supply Voltage
0.9 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F912DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
Package
24QSOP
Device Core
8051
Family Name
C8051F90x
Maximum Speed
25 MHz
Data Bus Width
8 Bit
Number Of Programmable I/os
16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1847-5
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F901-GU
Manufacturer:
Silicon Laboratories Inc
Quantity:
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C8051F91x-C8051F90x
17. Voltage Regulator (VREG0)
C8051F91x-C8051F90x devices include an internal voltage regulator (VREG0) to regulate the internal
core supply to 1.8 V from a VDD/DC+ supply of 1.8 to 3.6 V. Electrical characteristics for the on-chip
regulator are specified in the Electrical Specifications chapter.
The REG0CN register allows the Precision Oscillator Bias to be disabled, reducing supply current in all
non-Sleep power modes. This bias should only be disabled when the precision oscillator is not being used.
The internal regulator (VREG0) is disabled when the device enters Sleep Mode and remains enabled
when the device enters Suspend Mode. See Section “14. Power Management” on page 143 for complete
details about low power modes.
SFR Definition 17.1. REG0CN: Voltage Regulator Control
SFR Page = 0x0; SFR Address = 0xC9
17.1. Voltage Regulator Electrical Specifications
See Table 4.15 on page 59 for detailed Voltage Regulator Electrical Specifications.
170
Name
Reset
Type
Bit
3:1
Bit
7
6
5
4
0
OSCBIAS Precision Oscillator Bias.
Reserved Reserved.
Reserved Reserved.
Reserved Reserved.
Unused
Unused
Name
R
7
0
Unused.
Read = 0b. Write = Don’t care.
Read = 0b. Must Write 0b.
Read = 0b. Must Write 0b.
When set to 1, the bias used by the precision oscillator is forced on. If the precision
oscillator is not being used, this bit may be cleared to 0 to save approximately 80 µA
of supply current in all non-Sleep power modes. If disabled then re-enabled, the pre-
cision oscillator bias requires 4 µs of settling time.
Unused.
Read = 000b. Write = Don’t care.
Read = 0b. Must Write 0b.
Reserved
R/W
6
0
Reserved OSCBIAS
R/W
5
0
R/W
Rev. 1.0
4
1
Function
R
3
0
R
2
0
R
1
0
Reserved
R/W
0
0
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