C8051F220-GQ Silicon Laboratories Inc, C8051F220-GQ Datasheet - Page 135

• Manufacturer Part Number: C8051F220-GQ
• Description: IC 8051 MCU 8K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F2xxr

Specifications of C8051F220-GQ

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 48-TQFP, 48-VQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 32
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 32x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F2x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F206DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 32-ch x 8-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1241 - DEV KIT F220/221/226/230/231/236
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1238

17.2.2. Mode 1: 16-bit Counter/Timer with Auto-Reload
The Counter/Timer with Auto-Reload mode sets the TF2 timer overflow flag when the counter/timer regis-
ter overflows from 0xFFFF to 0x0000. An interrupt is generated if enabled. On overflow, the 16-bit value
held in the two capture registers (RCAP2H, RCAP2L) is automatically loaded into the counter/timer regis-
ter and the timer is restarted.
Counter/Timer with Auto-Reload mode is selected by clearing the CP/RL2 bit. Setting TR2 to logic 1
enables and starts the timer. Timer 2 can use either the system clock or transitions on an external input pin
as its clock source, as specified by the C/T2 bit. If EXEN2 is set to logic 1, a high-to-low transition on T2EX
will also cause Timer 2 to be reloaded. If EXEN2 is cleared, transitions on T2EX will be ignored.
SYSCLK
T2EX
T2
PORT0
PORT0
MUX
MUX
12
EXEN2
TR2
0
1
Figure 17.5. T2 Mode 1 Block Diagram
0
1
CKCON
M
T
2
M
T
1
M
T
0
Rev. 1.6
Reload
TCLK
RCAP2L
TL2
RCAP2H
TH2
C8051F2xx
CP/RL2
EXEN2
RCLK
TCLK
EXF2
C/T2
TR2
TF2
Interrupt
135