C8051F902-GM Silicon Laboratories Inc, C8051F902-GM Datasheet - Page 202
C8051F902-GM
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
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C8051F91x-C8051F90x
Internal Register Definition 20.5. RTC0XCN: SmaRTClock Oscillator Control
SmaRTClock Address = 0x05
202
Name
Reset
Type
Bit
2:0
7
6
5
4
3
Bit
CLKVLD
XMODE
AGCEN
BIASX2
LFOEN
Unused
Name
AGCEN
R/W
7
0
SmaRTClock Oscillator Automatic Gain Control (AGC) Enable.
0: AGC disabled.
1: AGC enabled.
SmaRTClock Oscillator Mode.
Selects Crystal or Self Oscillate Mode.
0: Self-Oscillate Mode selected.
1: Crystal Mode selected.
SmaRTClock Oscillator Bias Double Enable.
Enables/disables the Bias Double feature.
0: Bias Double disabled.
1: Bias Double enabled.
SmaRTClock Oscillator Crystal Valid Indicator.
Indicates if oscillation amplitude is sufficient for maintaining oscillation.
0: Oscillation has not started or oscillation amplitude is too low to maintain oscillation.
1: Sufficient oscillation amplitude detected.
Low Frequency Oscillator Enable and Select.
Overrides XMODE and selects the internal low frequency oscillator (LFO) as the
SmaRTClock oscillator source. Only available on ‘F912 and ‘F902 devices.
0: XMODE determines SmaRTClock oscillator source.
1: LFO enabled and selected as SmaRTClock oscillator source.
Unused.
Read = 000b; Write = Don’t Care.
XMODE
R/W
6
0
BIASX2
R/W
5
0
CLKVLD
Rev. 1.0
R
4
0
Function
LFOEN
R
3
0
R
2
0
R
1
0
R
0
0
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