C8051F352-GQ Silicon Laboratories Inc, C8051F352-GQ Datasheet - Page 207
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C8051F352-GQ
Manufacturer Part Number
C8051F352-GQ
Description
IC 8051 MCU 8K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F35xr
Specifications of C8051F352-GQ
Program Memory Type
FLASH
Program Memory Size
8KB (8K x 8)
Package / Case
32-LQFP
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x16b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
768 B
Interface Type
I2C/SMBus/SPI/UART
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
17
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
KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F350DK
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 16-bit
On-chip Dac
2-ch x 8-bit
No. Of I/o's
17
Ram Memory Size
768Byte
Cpu Speed
50MHz
No. Of Timers
4
Rohs Compliant
Yes
Package
32LQFP
Device Core
8051
Family Name
C8051F35x
Maximum Speed
50 MHz
Data Rom Size
128 B
Height
1.4 mm
Length
7 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Width
7 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1083 - DEV KIT FOR F350/351/352/353
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1272
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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C8051F352-GQ
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3 843
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22.3. Timer 3
Timer 3 is a 16-bit timer formed by two 8-bit SFRs: TMR3L (low byte) and TMR3H (high byte). Timer 3 may
operate in 16-bit auto-reload mode or (split) 8-bit auto-reload mode. The T3SPLIT bit (TMR3CN.3) defines
the Timer 3 operation mode.
Timer 3 may be clocked by the system clock, the system clock divided by 12, or the external oscillator
source divided by 8. The external clock mode is ideal for real-time clock (RTC) functionality, where the
internal oscillator drives the system clock while Timer 3 (and/or the PCA) is clocked by an external preci-
sion oscillator. Note that the external oscillator source divided by 8 is synchronized with the system clock.
22.3.1. 16-bit Timer with Auto-Reload
When T3SPLIT (TMR3CN.3) is zero, Timer 3 operates as a 16-bit timer with auto-reload. Timer 3 can be
clocked by SYSCLK, SYSCLK divided by 12, or the external oscillator clock source divided by 8. As the
16-bit timer register increments and overflows from 0xFFFF to 0x0000, the 16-bit value in the Timer 3
reload registers (TMR3RLH and TM3RLL) is loaded into the Timer 3 register as shown in Figure 22.6, and
the Timer 3 High Byte Overflow Flag (TMR3CN.7) is set. If Timer 3 interrupts are enabled, an interrupt will
be generated each Timer 3 overflow. Additionally, if Timer 3 interrupts are enabled and the TF3LEN bit is
set (TMR3CN.5), an interrupt will be generated each time the lower 8 bits (TMR3L) overflow from 0xFF to
0x00.
External Clock / 8
SYSCLK / 12
SYSCLK
T3XCLK
0
1
Figure 22.6. Timer 3 16-Bit Mode Block Diagram
T
M
H
3
M
T
3
L
CKCON
T
M
H
2
M
T
2
L
0
1
M
T
1
M
T
0
S
C
A
1
S
C
A
0
TR3
TCLK
Rev. 1.1
TMR3RLL TMR3RLH
TMR3L
TMR3H
Reload
C8051F350/1/2/3
TF3LEN
T3SPLIT
T3XCLK
TF3H
TF3L
TR3
Interrupt
207