C8051F019 Silicon Laboratories Inc, C8051F019 Datasheet - Page 129

• Manufacturer Part Number: C8051F019
• Description: IC 8051 MCU 16K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F018r

Specifications of C8051F019

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TQFP, 48-VQFP
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: I2C, SMBus, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 16 bit
• Operating Supply Voltage: 2.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

17.2.
Timer 2 is a 16-bit counter/timer formed by the two 8-bit SFRs: TL2 (low byte) and TH2 (high byte). As with
Timers 0 and 1, Timer 2 can use either the system clock or transitions on an external input pin as its clock source.
The Counter/Timer Select bit C/T2 bit (T2CON.1) selects the clock source for Timer 2. Clearing C/T2 selects the
system clock as the input for the timer (divided by either one or twelve as specified by the Timer Clock Select bit
T2M in CKCON). When C/T2 is set to 1, high-to-low transitions at the T2 input pin increment the counter/timer
register. (Refer to Section 12 for information on selecting and configuring external I/O pins.) Timer 2 can also be
used to start an ADC Data Conversion.
Timer 2 offers capabilities not found in Timer 0 and Timer 1.
Counter/Timer with Capture, 16-bit Counter/Timer with Auto-Reload or Baud Rate Generator Mode. Timer 2’s
operating mode is selected by setting configuration bits in the Timer 2 Control (T2CON) register. Below is a
summary of the Timer 2 operating modes and the T2CON bits used to configure the counter/timer. Detailed
descriptions of each mode follow.
129
C8051F018
C8051F019
Timer 2
RCLK
X
0
0
0
1
1
TCLK
X
0
0
1
0
1
CP/RL2
X
X
X
X
1
0
TR2
1
1
1
1
1
0
Rev. 1.2
Mode
16-bit Counter/Timer with Capture
16-bit Counter/Timer with Auto-Reload
Baud Rate Generator for TX
Baud Rate Generator for RX
Baud Rate Generator for TX and RX
Off
It operates in one of three modes: 16-bit