C8051F021-GQ Silicon Laboratories Inc, C8051F021-GQ Datasheet - Page 60

IC 8051 MCU 64K FLASH 64TQFP

C8051F021-GQ

Manufacturer Part Number
C8051F021-GQ
Description
IC 8051 MCU 64K FLASH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F02xr
Datasheets

Specifications of C8051F021-GQ

Program Memory Type
FLASH
Program Memory Size
64KB (64K x 8)
Package / Case
64-TQFP, 64-VQFP
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, Temp Sensor, WDT
Number Of I /o
32
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 8x12b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F0x
Core
8051
Data Bus Width
8 bit
Data Ram Size
4.25 KB
Interface Type
I2C/SMBus/SPI/UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
32
Number Of Timers
4
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
C8051F020DK
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 8-bit or 8-ch x 12-bit
On-chip Dac
2-ch x 12-bit
No. Of I/o's
32
Ram Memory Size
4352Byte
Cpu Speed
25MHz
No. Of Timers
5
No. Of Pwm Channels
5
Rohs Compliant
Yes
Data Rom Size
64 KB
A/d Bit Size
12 bit
A/d Channels Available
8
Height
1.05 mm
Length
10 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Width
10 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1200 - DEV KIT FOR F020/F021/F022/F023
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1201

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F021-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F021-GQ
Manufacturer:
SILICON
Quantity:
1 400
Part Number:
C8051F021-GQR
Manufacturer:
SiliconL
Quantity:
2 000
Part Number:
C8051F021-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F021-GQR
Manufacturer:
SILICON
Quantity:
22
C8051F022/3
The Temperature Sensor transfer function is shown in Figure 6.2. The output voltage (V
the Temperature Sensor is selected by bits AMX0AD3-0 in register AMX0SL; this voltage will be amplified by the
PGA according to the user-programmed PGA settings.
6.2.
ADC0 has a maximum conversion speed of 100 ksps. The ADC0 conversion clock is derived from the system clock
divided by the value held in the ADCSC bits of register ADC0CF.
6.2.1. Starting a Conversion
A conversion can be initiated in one of four ways, depending on the programmed states of the ADC0 Start of Conver-
sion Mode bits (AD0CM1, AD0CM0) in ADC0CN. Conversions may be initiated by:
The AD0BUSY bit is set to logic 1 during conversion and restored to logic 0 when conversion is complete. The fall-
ing edge of AD0BUSY triggers an interrupt (when enabled) and sets the AD0INT interrupt flag (ADC0CN.5). Con-
verted data is available in the ADC0 data word MSB and LSB registers, ADC0H, ADC0L. Converted data can be
either left or right justified in the ADC0H:ADC0L register pair (see example in Figure 6.11) depending on the pro-
grammed state of the AD0LJST bit in the ADC0CN register.
When initiating conversions by writing a ‘1’ to AD0BUSY, the AD0INT bit should be polled to determine when a
conversion has completed (ADC0 interrupts may also be used). The recommended polling procedure is shown below.
60
ADC Modes of Operation
1.
2.
3.
4.
Step 1. Write a ‘0’ to AD0INT;
Step 2. Write a ‘1’ to AD0BUSY;
Step 3. Poll AD0INT for ‘1’;
Step 4. Process ADC0 data.
Writing a ‘1’ to the AD0BUSY bit of ADC0CN;
A Timer 3 overflow (i.e. timed continuous conversions);
A rising edge detected on the external ADC convert start signal, CNVSTR;
A Timer 2 overflow (i.e. timed continuous conversions).
1.000
0.900
0.800
0.700
0.600
0.500
(Volts)
Figure 6.2. Temperature Sensor Transfer Function
-50
0
Rev. 1.4
V
TEMP
50
= 0.00286(TEMP
for PGA Gain = 1
100
C
) + 0.776
(Celsius)
TEMP
) is the PGA input when

Related parts for C8051F021-GQ