C8051F022 Silicon Laboratories Inc, C8051F022 Datasheet - Page 245
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C8051F022
Manufacturer Part Number
C8051F022
Description
IC 8051 MCU 64K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F02xr
Specifications of C8051F022
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
64
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 8x10b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F022
Manufacturer:
SILICON
Quantity:
513
Company:
Part Number:
C8051F022
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F022-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Part Number:
C8051F022-GQ
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Company:
Part Number:
C8051F022-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F022R
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
22.3.2. Mode 1: 16-bit Counter/Timer with Auto-Reload
The Counter/Timer with Auto-Reload mode sets the TF4 timer overflow flag when the counter/timer register over-
flows from 0xFFFF to 0x0000. An interrupt is generated if enabled. On overflow, the 16-bit value held in the two
capture registers (RCAP4H, RCAP4L) is automatically loaded into the counter/timer register and the timer is
restarted.
Counter/Timer with Auto-Reload mode is selected by clearing the CP/RL4 bit. Setting TR4 to logic 1 enables and
starts the timer. Timer 4 can use either the system clock or transitions on an external input pin (T2) as its clock source,
as specified by the C/T4 bit. If EXEN4 is set to logic 1, a high-to-low transition on T4EX will also cause a Timer 4
reload, and a Timer 4 interrupt if enabled. If EXEN4 is logic 0, transitions on T4EX will be ignored.
SYSCLK
T4EX
T4
12
Crossbar
EXEN4
M
T
4
CKCON
M
0
1
T
2
Figure 22.26. T4 Mode 1 Block Diagram
M
T
1
M
T
0
0
1
TR4
Rev. 1.4
Reload
TCLK
RCAP4L
TL4
RCAP4H
TH4
C8051F020/1/2/3
CP/RL4
EXEN4
RCLK0
TCLK0
EXF4
C/T4
TR4
TF4
Interrupt
245