C8051F343-GM Silicon Laboratories Inc, C8051F343-GM Datasheet - Page 244
![IC 8051 MCU 32K FLASH MEM 32-QFN](/photos/12/27/122777/c8051f343-gm_sml.jpg)
C8051F343-GM
Manufacturer Part Number
C8051F343-GM
Description
IC 8051 MCU 32K FLASH MEM 32-QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F34xr
Datasheet
1.C8051F349-GQ.pdf
(276 pages)
Specifications of C8051F343-GM
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
32-QFN
Core Processor
8051
Core Size
8-Bit
Speed
48MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 21x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2304 B
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
25
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
10 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1748 - ADAPTER TOOLSTICK FOR C8051F34X770-1006 - ISP 4PORT FOR SILABS C8051F MCU
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1346-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F343-GM
Manufacturer:
Silicon Labs
Quantity:
135
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- Download datasheet (2Mb)
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
21.2.2. 8-bit Timers with Auto-Reload
When T2SPLIT = ‘1’ and T2CE = ‘0’, Timer 2 operates as two 8-bit timers (TMR2H and TMR2L). Both 8-bit
timers operate in auto-reload mode as shown in Figure 21.5. TMR2RLL holds the reload value for TMR2L;
TMR2RLH holds the reload value for TMR2H. The TR2 bit in TMR2CN handles the run control for TMR2H.
TMR2L is always running when configured for 8-bit Mode.
Each 8-bit timer may be configured to use SYSCLK, SYSCLK divided by 12, or the external oscillator clock
source divided by 8. The Timer 2 Clock Select bits (T2MH and T2ML in CKCON) select either SYSCLK or
the clock defined by the Timer 2 External Clock Select bit (T2XCLK in TMR2CN), as follows:
The TF2H bit is set when TMR2H overflows from 0xFF to 0x00; the TF2L bit is set when TMR2L overflows
from 0xFF to 0x00. When Timer 2 interrupts are enabled, an interrupt is generated each time TMR2H over-
flows. If Timer 2 interrupts are enabled and TF2LEN (TMR2CN.5) is set, an interrupt is generated each
time either TMR2L or TMR2H overflows. When TF2LEN is enabled, software must check the TF2H and
TF2L flags to determine the source of the Timer 2 interrupt. The TF2H and TF2L interrupt flags are not
cleared by hardware and must be manually cleared by software.
244
External Clock / 8
T2MH
0
0
1
SYSCLK / 12
T2XCLK
T2XCLK
X
0
1
0
1
Figure 21.5. Timer 2 8-Bit Mode Block Diagram
TMR2H Clock Source
SYSCLK
External Clock / 8
SYSCLK / 12
SYSCLK
0
1
1
0
M
T
H
3
M
T
3
L
CKCON
M
H
T
2
M
T
2
L
M
T
1
T
M
0
TR2
S
C
A
1
S
C
A
0
Rev. 1.3
TCLK
TCLK
TMR2RLH
TMR2RLL
TMR2H
TMR2L
T2ML
0
0
1
Reload
Reload
T2XCLK
X
0
1
To SMBus
To ADC,
T2SPLIT
T2XCLK
SMBus
TF2LEN
T2CSS
T2CE
TF2H
TF2L
TR2
TMR2L Clock Source
External Clock / 8
SYSCLK / 12
SYSCLK
Interrupt
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