C8051F557-IM Silicon Laboratories Inc, C8051F557-IM Datasheet - Page 159

• Manufacturer Part Number: C8051F557-IM
• Description: IC 8051 MCU 16K FLASH 24-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F55xr

Specifications of C8051F557-IM

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 24-QFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 18
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.25 V
• Data Converters: A/D 18x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: C8051F5x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2304 B
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 18
• Operating Supply Voltage: 1.8 V to 5.25 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F540DK
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1691 - KIT DEVELOPMENT FOR C8051F560
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1690-5

SFR Definition 18.3. OSCICRS: Internal Oscillator Coarse Calibration
SFR Address = 0xA2; SFR Page = 0x0F
SFR Definition 18.4. OSCIFIN: Internal Oscillator Fine Calibration
SFR Address = 0x9E; SFR Page = 0x0F
Name
Reset
Reset
Bit
6:0
Bit
7:6
5:0
Type
Type
7
Bit
Bit
OSCIFIN[5:0] Internal Oscillator Fine Calibration Bits.
OSCICRS[6:0]
Unused
Name
Unused
Name
R
R
7
0
7
0
Read = 00b; Write = Don’t Care
These bits are fine adjustment for the internal oscillator period. The reset value is
factory calibrated to generate an internal oscillator frequency of 24 MHz.
Varies
Read = 0; Write = Don’t Care
Internal Oscillator Coarse Calibration Bits.
These bits determine the internal oscillator period. When set to 0000000b, the
internal oscillator operates at its slowest setting. When set to 1111111b, the inter-
nal oscillator operates at its fastest setting. The reset value is factory calibrated
to generate an internal oscillator frequency of 24 MHz.
R
6
6
0
Varies
Varies
5
5
Varies
Varies
Rev. 1.1
4
4
OSCICRS[6:0]
Function
Varies
Varies
Function
R/W
3
3
OSCIFIN[5:0]
C8051F55x/56x/57x
R/W
Varies
Varies
2
2
Varies
Varies
1
1
Varies
Varies
0
0
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