C8051F066-GQ Silicon Laboratories Inc, C8051F066-GQ Datasheet - Page 242
C8051F066-GQ
Manufacturer Part Number
C8051F066-GQ
Description
MCU 8-Bit C8051F06x 8051 CISC 32KB Flash 3.3V 100-Pin TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F06xr
Specifications of C8051F066-GQ
Package
100TQFP
Device Core
8051
Family Name
C8051F06x
Maximum Speed
25 MHz
Operating Supply Voltage
3.3 V
Data Bus Width
8 Bit
Number Of Programmable I/os
59
Interface Type
I2C/SMBus/SPI/UART
On-chip Adc
2-chx16-bit
Number Of Timers
5
Ram Size
4.25 KB
Program Memory Size
32 KB
Program Memory Type
Flash
Operating Temperature
-40 to 85 °C
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
59
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 2x16b
Oscillator Type
Internal
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
336-1221
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C8051F060/1/2/3/4/5/6/7
Setting the SMBus0 Free Timer Enable bit (FTE, SMB0CN.1) to logic 1 enables the timer in SMB0CR.
When SCL goes high, the timer in SMB0CR counts up. A timer overflow indicates a free bus timeout: if
SMBus0 is waiting to generate a START, it will do so after this timeout. The bus free period should be less
than 50 µs (see Figure 20.9, SMBus0 Clock Rate Register).
When the TOE bit in SMB0CN is set to logic 1, Timer 4 is used to detect SCL low timeouts. If Timer 4 is
enabled (see
Section “24.2. Timer 2, Timer 3, and Timer 4” on page
295), Timer 4 is forced to reload when
SCL is high, and forced to count when SCL is low. With Timer 4 enabled and configured to overflow after
242
Rev. 1.2
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