C8051F500-IQ Silicon Laboratories Inc, C8051F500-IQ Datasheet - Page 54
![IC 8051 MCU 64K FLASH 48-QFP](/photos/12/17/121756/c8051f500-iq_sml.jpg)
C8051F500-IQ
Manufacturer Part Number
C8051F500-IQ
Description
IC 8051 MCU 64K FLASH 48-QFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F50xr
Specifications of C8051F500-IQ
Program Memory Type
FLASH
Program Memory Size
64KB (64K x 8)
Package / Case
48-QFP
Mfg Application Notes
LIN Bootloader AppNote
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), CAN, LIN, SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
40
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.25 V
Data Converters
A/D 32x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Processor Series
C8051F5x
Core
8051
Data Bus Width
8 bit
Data Ram Size
4.25 KB
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
40
Number Of Timers
4
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F500DK
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 32 Channel
Package
48PQFP
Device Core
8051
Family Name
C8051F50x
Maximum Speed
50 MHz
Operating Supply Voltage
2.5|3.3|5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1530 - ADAPTER PROG TOOLSTICK F500336-1529 - PLATFORM PROG TOOLSTCK F500336-1527 - KIT DEV FOR C8051F50X336-1526 - BOARD PROTOTYPE W/C8051F500
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1510
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F500-IQ
Manufacturer:
SiliconL
Quantity:
300
Company:
Part Number:
C8051F500-IQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
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Part Number:
C8051F500-IQR
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C8051F50x-F51x
Post-Tracking Mode is selected when AD0TM is set to 01b. A programmable tracking time based on
AD0TK is started immediately following the convert start signal. Conversions are started after the pro-
grammed tracking time ends. After a conversion is complete, ADC0 does not track the input. Rather, the
sampling capacitor remains disconnected from the input making the input pin high-impedance until the
next convert start signal.
Dual-Tracking Mode is selected when AD0TM is set to 11b. A programmable tracking time based on
AD0TK is started immediately following the convert start signal. Conversions are started after the pro-
grammed tracking time ends. After a conversion is complete, ADC0 tracks continuously until the next con-
version is started.
Depending on the output connected to the ADC input, additional tracking time, more than is specified in
Table 5.9, may be required after changing MUX settings. See the settling time requirements described in
Section “6.2.1. Settling Time Requirements” on page 57.
6.1.3. Timing
ADC0 has a maximum conversion speed specified in Table 5.9. ADC0 is clocked from the ADC0 Subsys-
tem Clock (FCLK). The source of FCLK is selected based on the BURSTEN bit. When BURSTEN is
logic 0, FCLK is derived from the current system clock. When BURSTEN is logic 1, FCLK is derived from
the Burst Mode Oscillator, an independent clock source with a maximum frequency of 25 MHz.
When ADC0 is performing a conversion, it requires a clock source that is typically slower than FCLK. The
ADC0 SAR conversion clock (SAR clock) is a divided version of FCLK. The divide ratio can be configured
using the AD0SC bits in the ADC0CF register. The maximum SAR clock frequency is listed in Table 5.9.
ADC0 can be in one of three states at any given time: tracking, converting, or idle. Tracking time depends
on the tracking mode selected. For Pre-Tracking Mode, tracking is managed by software and ADC0 starts
conversions immediately following the convert start signal. For Post-Tracking and Dual-Tracking Modes,
the tracking time after the convert start signal is equal to the value determined by the AD0TK bits plus 2
FCLK cycles. Tracking is immediately followed by a conversion. The ADC0 conversion time is always 13
SAR clock cycles plus an additional 2 FCLK cycles to start and complete a conversion. Figure 6.3 shows
timing diagrams for a conversion in Pre-Tracking Mode and tracking plus conversion in Post-Tracking or
Dual-Tracking Mode. In this example, repeat count is set to one.
54
Dual-Tracking
Post-Tracking
Convert Start
Pre-Tracking
AD0TM = 10
AD0TM = 11
AD0TM= 01
Track
Track
Idle
Track
Track
Figure 6.2. ADC0 Tracking Modes
Convert
Rev. 1.1
Convert
Convert
Track
Track
Idle
Track
Track
Convert ...
Convert..
Convert..
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