C8051F127 Silicon Laboratories Inc, C8051F127 Datasheet - Page 194
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C8051F127
Manufacturer Part Number
C8051F127
Description
IC 8051 MCU 128K FLASH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F12xr
Specifications of C8051F127
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
32
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 8x10b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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194
Bits 7–5: UNUSED: Read = 000b; Write = don’t care.
Bits 4–0: PLLM4–0: PLL Reference Clock Pre-divider.
Bits 7–0: PLLN7–0: PLL Multiplier.
PLLN7
R/W
R/W
Bit7
Bit7
-
These bits select the pre-divide value of the PLL reference clock. When set to any non-zero
value, the reference clock will be divided by the value in PLLM4–0. When set to ‘00000b’,
the reference clock will be divided by 32.
These bits select the multiplication factor of the divided PLL reference clock. When set to
any non-zero value, the multiplication factor will be equal to the value in PLLN7-0. When set
to ‘00000000b’, the multiplication factor will be equal to 256.
PLLN6
R/W
R/W
Bit6
Bit6
-
SFR Definition 14.7. PLL0MUL: PLL Clock Scaler
SFR Definition 14.6. PLL0DIV: PLL Pre-divider
PLLN5
R/W
R/W
Bit5
Bit5
-
PLLM4
PLLN4
R/W
R/W
Bit4
Bit4
Rev. 1.4
PLLM3
PLLN3
R/W
R/W
Bit3
Bit3
PLLM2
PLLN2
R/W
R/W
Bit2
Bit2
PLLM1
PLLN1
R/W
R/W
Bit1
Bit1
SFR Address:
SFR Address:
PLLM0
PLLN0
SFR Page:
SFR Page:
R/W
R/W
Bit0
Bit0
0x8D
F
0x8E
F
00000001
00000001
Reset Value
Reset Value
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