C8051F412-GQ Silicon Laboratories Inc, C8051F412-GQ Datasheet - Page 121
C8051F412-GQ
Manufacturer Part Number
C8051F412-GQ
Description
IC 8051 MCU 16K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F41xr
Specifications of C8051F412-GQ
Program Memory Type
FLASH
Program Memory Size
16KB (16K x 8)
Package / Case
32-LQFP
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
24
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.25 V
Data Converters
A/D 20x12b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F4x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2.25 KB
Interface Type
I2C/SMBus/SPI/UART
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
24
Number Of Timers
4
Operating Supply Voltage
2 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F410DK
Minimum Operating Temperature
- 40 C
On-chip Dac
2-ch x 12-bit
No. Of I/o's
24
Ram Memory Size
2368Byte
Cpu Speed
50MHz
No. Of Timers
4
Rohs Compliant
Yes
Package
32LQFP
Device Core
8051
Family Name
C8051F41x
Maximum Speed
50 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1453 - ADAPTER PROGRAM TOOLSTICK F410336-1317 - KIT EVAL FOR C8051F411336-1314 - KIT DEV FOR C8051F41X
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1310
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F412-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F412-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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14. Cyclic Redundancy Check Unit (CRC0)
C8051F41x devices include a cyclic redundancy check unit (CRC0) that can perform a CRC using a 16-bit
or 32-bit polynomial. CRC0 accepts a stream of 8-bit data written to the CRC0IN register. CRC0 posts the
16-bit or 32-bit result to an internal register. The internal result register may be accessed indirectly using
the CRC0PNT bits and CRC0DAT register, as shown in Figure 14.1. CRC0 also has a bit reverse register
for quick data manipulation.
14.1. 16-bit CRC Algorithm
The C8051F41x CRC unit calculates the 16-bit CRC MSB-first, using a poly of 0x1021. The following
describes the 16-bit CRC algorithm performed by the hardware:
Step 1. XOR the most-significant byte of the current CRC result with the input byte. If this is the
Step 2a. If the MSB of the CRC result is set, left-shift the CRC result, and then XOR the CRC
Step 2b. If the MSB of the CRC result is not set, left-shift the CRC result.
Step 3. Repeat at Step 2a for the number of input bits (8).
first iteration of the CRC unit, the current CRC result will be the set initial value (0x0000 or
0xFFFF).
result with the polynomial (0x1021).
CRC0PNT1
CRC0PNT0
CRC0SEL
CRC0INIT
CRC0VAL
Figure 14.1. CRC0 Block Diagram
CRC0IN
8
Rev. 1.1
CRC Engine
8
RESULT
4 to 1 MUX
8
32
8
8
8
C8051F410/1/2/3
CRC0DAT
121
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