C8051F988-GM Silicon Laboratories Inc, C8051F988-GM Datasheet - Page 178

• Manufacturer Part Number: C8051F988-GM
• Description: IC MCU 8BIT 4KB FLASH 24QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F9xxr

Specifications of C8051F988-GM

• Program Memory Type: FLASH
• Program Memory Size: 4KB (4K x 8)
• Package / Case: 24-UQFN Exposed Pad, 24-HUQFN
• 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: 17
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F9x
• Core: 8051
• Data Ram Size: 512 B
• Interface Type: I2C, SMBus, Enhanced UART, Enhanced SPI
• Maximum Clock Frequency: 7 KHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.4 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F996DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• On-chip Dac: 10 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1959-5

C8051F99x-C8051F98x
17. Voltage Regulator (VREG0)
C8051F99x-C8051F98x devices include an internal voltage regulator (VREG0) to regulate the internal
core supply to 1.8 V from a VDD 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 “15. Power Management” on page 161 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 62 for detailed Voltage Regulator Electrical Specifications.
178
Name
Reset
Type
6:5
3:1
Bit
Bit
7
4
0
OSCBIAS Precision Oscillator Bias.
Reserved Read = 0b. Must Write 0b.
Reserved Read = 0b. Must Write 0b.
Unused
Unused
Name
R
7
0
Read = 0b. Write = Don’t care.
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 reduce supply current in all
non-Sleep power modes.
Read = 000b. Write = Don’t care.
Reserved
R/W
6
0
Reserved OSCBIAS
R/W
5
0
R/W
Rev. 1.0
4
0
Function
R
3
0
R
2
0
R
1
0
Reserved
R/W
0
0