C8051F902-GM Silicon Laboratories Inc, C8051F902-GM Datasheet - Page 168

• Manufacturer Part Number: C8051F902-GM
• Description: IC MCU 8BIT 8KB FLASH 24QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F9xxr

Specifications of C8051F902-GM

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 24-QFN
• 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 15x10/12b
• 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: 12 bit
• Package: 24QFN EP
• 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: 336-1848-5

C8051F91x-C8051F90x
SFR Definition 16.2. DC0CF: DC-DC Converter Configuration
SFR Page = 0x0; SFR Address = 0x96
168
Name
Reset
Type
Bit
6:5 CLKDIV[1:0] DC
7
4
3
2
1
0
Bit
AD0CKINV ADC0 Clock Inversion (Clock Invert During Sync).
VDDSLP
CLKSEL
CLKINV
ILIMIT
Name
LPEN
LPEN
R/W
7
0
Low Power Mode Enable.
Enables the dc-dc low power mode which reduces bias currents, reduces peak
inductor current, and increases efficiency for low load currents. Only available on
‘F912 and ‘F902 devices.
0: Low Power Mode Disabled.
1: Low Power Mode Enabled.
Divides the dc-dc converter clock when the system clock is selected as the clock
source for dc-dc converter. These bits are ignored when the dc-dc converter is
clocked from its local oscillator.
00: The dc-dc converter clock is system clock divided by 1.
01: The dc-dc converter clock is system clock divided by 2.
10: The dc-dc converter clock is system clock divided by 4.
11: The dc-dc converter clock is system clock divided by 8.
Inverts the ADC0 SAR clock derived from the dc-dc converter clock when the SYNC
bit (DC0CN.3) is enabled. This bit is ignored when the SYNC bit is set to zero.
0: ADC0 SAR clock is inverted.
1: ADC0 SAR clock is not inverted.
DC
Inverts the system clock used as the input to the dc-dc clock divider.
0: The dc-dc converter clock is not inverted.
1: The dc-dc converter clock is inverted.
Peak Current Limit Threshold.
Sets the threshold for the maximum allowed peak inductor current according to
Table 16.1.
VDD
Specifies the power source for VDD/DC+ in Sleep Mode when the dc-dc converter is
enabled.
0: VDD-DC+ connected to VBAT in Sleep Mode.
1: VDD-DC+ is floating in Sleep Mode.
DC
Specifies the dc-dc converter clock source.
0: The dc-dc converter is clocked from its local oscillator.
1: The dc-dc converter is clocked from the system clock.
R/W
-
-
-
6
0
DC Clock Divider.
DC Converter Clock Invert.
DC Converter Clock Source Select.
CLKDIV[1:0]
-
DC+ Sleep Mode Connection.
R/W
5
0
AD0CKINV
R/W
Rev. 1.0
4
0
Function
CLKINV
R/W
3
0
ILIMIT
R/W
2
0
VDDSLP
R/W
1
0
CLKSEL
R/W
0
0