C8051F338-GM Silicon Laboratories Inc, C8051F338-GM Datasheet - Page 184

• Manufacturer Part Number: C8051F338-GM
• Description: IC MCU 16K FLASH 24QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F338-GM

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 24-QFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: I2C/SMBus/SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F336DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• On-chip Dac: 1-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1427-5

C8051F336/7/8/9
24.1.3. 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. 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 in the TCON register is set and the counter in TL0 is reloaded
from TH0. If Timer 0 interrupts are enabled, an interrupt 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. Setting the
TR0 bit (TCON.4) enables the timer when either GATE0 in the TMOD register is logic 0 or when the input
signal INT0 is active as defined by bit IN0PL in register IT01CF (see Section “15.3. External Interrupts
/INT0 and /INT1” on page 89 for details on the external input signals INT0 and INT1).
184
/INT0
T0
Crossbar
Pre-scaled Clock
SYSCLK
IN0PL
GATE0
Figure 24.2. T0 Mode 2 Block Diagram
XOR
T0M
0
1
TR0
0
1
Rev.1.0
G
A
T
E
1
C
T
1
/
M
T
1
1
TMOD
M
T
1
0
TCLK
G
A
E
T
0
C
T
0
/
M
T
0
1
M
T
0
0
(8 bits)
(8 bits)
TH0
TL0
N
1
P
L
I
N
1
S
L
2
I
IT01CF
N
S
1
L
1
I
N
S
1
L
0
I
N
P
0
L
I
Reload
N
0
S
L
2
I
N
0
S
L
1
I
N
S
0
L
0
I
TR1
TR0
TF1
TF0
IE1
IT1
IE0
IT0
Interrupt