C8051F046-GQ Silicon Laboratories Inc, C8051F046-GQ Datasheet - Page 248

IC 8051 MCU 32K FLASH 100TQFP

C8051F046-GQ

Manufacturer Part Number
C8051F046-GQ
Description
IC 8051 MCU 32K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F04xr
Datasheets

Specifications of C8051F046-GQ

Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
CAN, EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
64
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Processor Series
C8051F0x
Core
8051
Data Bus Width
8 bit
Data Ram Size
4.25 KB
Interface Type
CAN, SMBus, SPI, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
64
Number Of Timers
5
Operating Supply Voltage
2.7 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
C8051F040DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 13 Channel
On-chip Dac
12 bit, 2 Channel
Package
100TQFP
Device Core
8051
Family Name
C8051F04x
Maximum Speed
25 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
 Details
Other names
336-1211

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Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F046-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Part Number:
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Manufacturer:
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Part Number:
C8051F046-GQR
Manufacturer:
Silicon Laboratories Inc
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C8051F040/1/2/3/4/5/6/7
19.4.2. Clock Rate Register
248
Bits7-0:
R/W
Bit7
SMB0CR.[7:0]: SMBus0 Clock Rate Preset
The SMB0CR Clock Rate register controls the frequency of the serial clock SCL in master
mode. The 8-bit word stored in the SMB0CR Register preloads a dedicated 8-bit timer. The
timer counts up, and when it rolls over to 0x00, the SCL logic state toggles.
The SMB0CR setting should be bounded by the following equation, where SMB0CR is the
unsigned 8-bit value in register SMB0CR, and SYSCLK is the system clock frequency in Hz:
The resulting SCL signal high and low times are given by the following equations:
Using the same value of SMB0CR from above, the Bus Free Timeout period is given in the
following equation:
R/W
Bit6
SFR Definition 19.2. SMB0CR: SMBus0 Clock Rate
SMB0CR
T
R/W
Bit5
T
HIGH
BFT
T
LOW
10
288 0.85
258 SMB0CR
=
R/W
Bit4
---------------------------------------------------- -
256 SMB0CR
256 SMB0CR
Rev. 1.5
SYSCLK
R/W
Bit3
SYSCLK
 SYSCLK
 SYSCLK
 1.124 6
R/W
Bit2
+
1
+
E
625ns
R/W
Bit1
SFR Address:
SFR Page:
R/W
Bit0
0xCF
0
00000000
Reset Value

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