C8051F340-GQ Silicon Laboratories Inc, C8051F340-GQ Datasheet - Page 263
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C8051F340-GQ
Manufacturer Part Number
C8051F340-GQ
Description
IC 8051 MCU FLASH 64K 48TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F34xr
Datasheets
1.C8051F340DK.pdf
(1 pages)
2.C8051F349-GQ.pdf
(276 pages)
3.C8051F347-GQ.pdf
(296 pages)
Specifications of C8051F340-GQ
Program Memory Type
FLASH
Program Memory Size
64KB (64K x 8)
Package / Case
48-TQFP, 48-VQFP
Core Processor
8051
Core Size
8-Bit
Speed
48MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
40
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 20x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
5.25 KB
Interface Type
I2C/SMBus/SPI/UART/USB
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
40
Number Of Timers
4
Operating Supply Voltage
2.7 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
KSK-SL-F34X, KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F340DK
Minimum Operating Temperature
- 40 C
On-chip Adc
17-ch x 10-bit
No. Of I/o's
40
Ram Memory Size
4352Byte
Cpu Speed
48MHz
No. Of Timers
4
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1748 - ADAPTER TOOLSTICK FOR C8051F34X770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1452 - ADAPTER PROGRAM TOOLSTICK F340336-1326 - KIT REF DESIGN PWR OVER ETHERNET336-1307 - KIT DEV FOR C8051F34X
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1298
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F340-GQ
Manufacturer:
SiliconL
Quantity:
7 053
Company:
Part Number:
C8051F340-GQ
Manufacturer:
SILICON
Quantity:
2 250
Company:
Part Number:
C8051F340-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F340-GQR
Manufacturer:
SILICON
Quantity:
3 870
Company:
Part Number:
C8051F340-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Part Number:
C8051F340-GQR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
22.2.6. 16-Bit Pulse Width Modulator Mode
A PCA module may also be operated in 16-Bit PWM mode. In this mode, the 16-bit capture/compare mod-
ule defines the number of PCA clocks for the low time of the PWM signal. When the PCA counter matches
the module contents, the output on CEXn is asserted high; when the counter overflows, CEXn is asserted
low. To output a varying duty cycle, new value writes should be synchronized with PCA CCFn match inter-
rupts. 16-Bit PWM Mode is enabled by setting the ECOMn, PWMn, and PWM16n bits in the PCA0CPMn
register. For a varying duty cycle, match interrupts should be enabled (ECCFn = 1 AND MATn = 1) to help
synchronize the capture/compare register writes. The duty cycle for 16-Bit PWM Mode is given by
Equation 22.3.
Important Note About Capture/Compare Registers : When writing a 16-bit value to the PCA0 Capture/
Compare registers, the low byte should always be written first. Writing to PCA0CPLn clears the ECOMn bit
to ‘0’; writing to PCA0CPHn sets ECOMn to ‘1’.
Using Equation 22.3, the largest duty cycle is 100% (PCA0CPn = 0), and the smallest duty cycle is
0.0015% (PCA0CPn = 0xFFFF). A 0% duty cycle may be generated by clearing the ECOMn bit to ‘0’.
PCA0CPLn
Write to
Reset
PCA0CPHn
Write to
0
ENB
ENB
1
W
P
M
1
6
n
1
E
C
O
M
n
PCA0CPMn
C
A
P
P
n
0 0 x 0
C
A
P
N
n
M
A
T
n
PCA Timebase
O
G
T
n
Equation 22.3. 16-Bit PWM Duty Cycle
W
P
M
n
E
C
C
F
n
x
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
Figure 22.9. PCA 16-Bit PWM Mode
DutyCycle
Enable
PCA0CPHn
PCA0H
=
16-bit Comparator
Rev. 1.3
---------------------------------------------------- -
65536 PCA0CPn
PCA0CPLn
PCA0L
–
65536
Overflow
match
S
R
SET
CLR
Q
Q
CEXn
Crossbar
Port I/O
263