C8051F340-GQR Silicon Laboratories Inc, C8051F340-GQR Datasheet - Page 246
![no-image](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_sml.jpg)
C8051F340-GQR
Manufacturer Part Number
C8051F340-GQR
Description
MCU 8-Bit C8051F34x 8051 CISC 64KB Flash 3.3V/5V 48-Pin TQFP T/R
Manufacturer
Silicon Laboratories Inc
Datasheet
1.C8051F340-GQR.pdf
(276 pages)
Specifications of C8051F340-GQR
Package
48TQFP
Device Core
8051
Family Name
C8051F34x
Maximum Speed
48 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
40
Interface Type
I2C/SMBus/SPI/UART/USB
On-chip Adc
17-chx10-bit
Number Of Timers
4
Ram Size
4.25 KB
Program Memory Size
64 KB
Program Memory Type
Flash
Operating Temperature
-40 to 85 °C
Available stocks
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C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
When T2SPLIT = ‘1’, the Timer 2 registers (TMR2H and TMR2L) act as two 8-bit counters. Each counter
counts up independently and overflows from 0xFF to 0x00. Each time a capture event is received, the con-
tents of the Timer 2 registers are latched into the Timer 2 Reload registers (TMR2RLH and TMR2RLL). A
Timer 2 interrupt is generated if enabled.
246
External Clock / 8
SYSCLK / 12
T
F
H
2
T
F
2
L
TMR2CN
E
N
T
F
2
L
C
E
T
2
T
2
S
P
L
T
I
R
T
2
T
2
C
S
S
Figure 21.7. Timer 2 Capture Mode (T2SPLIT = ‘1’)
T
X
C
K
2
L
0
1
SYSCLK
0
1
1
0
M
H
T
3
M
T
3
L
CKCON
M
H
T
2
M
T
2
L
M
T
1
M
T
0
TR2
S
C
A
1
S
C
A
0
Rev. 1.3
USB Start-of-Frame (SOF)
Low-Frequency Oscillator
TCLK
TCLK
Falling Edge
TMR2RLH
TMR2RLL
TMR2H
TMR2L
Capture
Capture
To SMBus
To ADC,
SMBus
T2CSS
0
1
Enable
Interrupt
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