C8051F022-GQR Silicon Laboratories Inc, C8051F022-GQR Datasheet - Page 229
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C8051F022-GQR
Manufacturer Part Number
C8051F022-GQR
Description
IC 8051 MCU 64K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F02xr
Specifications of C8051F022-GQR
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
For Use With
336-1200 - DEV KIT FOR F020/F021/F022/F023
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F022-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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22.1.3. Mode 2: 8-bit Counter/Timer with Auto-Reload
Mode 2 configures Timer 0 and Timer 1 to operate as 8-bit counter/timers with automatic reload of the start value.
The TL0 holds the count and TH0 holds the reload value. When the counter in TL0 overflows from all ones to 0x00,
the timer overflow flag TF0 (TCON.5) is set and the counter value in TL0 is reloaded from TH0. If enabled, an inter-
rupt will occur when the TF0 flag is set. The reload value in TH0 is not changed. TL0 must be initialized to the
desired value before enabling the timer for the first count to be correct. When in Mode 2, Timer 1 operates identically
to Timer 0. Both counter/timers are enabled and configured in Mode 2 in the same manner as Mode 0.
SYSCLK
/INT0
T0
Figure 22.3. T0 Mode 2 (8-bit Auto-Reload) Block Diagram
Crossbar
GATE0
12
TR0
0
1
M
T
4
CKCON
M
T
2
M
T
1
0
1
M
T
0
G
A
T
E
1
C
T
1
/
Rev. 1.4
M
T
1
1
TMOD
M
T
1
0
TCLK
G
A
T
E
0
C
T
0
/
M
T
0
1
M
T
0
0
(8 bits)
(8 bits)
TH0
TL0
Reload
C8051F020/1/2/3
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
Interrupt
229
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