C8051F236-GQ Silicon Laboratories Inc, C8051F236-GQ Datasheet - Page 128

• Manufacturer Part Number: C8051F236-GQ
• Description: IC 8051 MCU 8K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F2xxr

Specifications of C8051F236-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: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F2x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• 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: C8051F226DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 32 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1244

C8051F2xx
17.1.4. Mode 3: Two 8-bit Counter/Timers (Timer 0 Only)
Timer 0 and Timer 1 behave differently in Mode 3. Timer 0 is configured as two separate 8-bit counter/tim-
ers held in TL0 and TH0. The counter/timer in TL0 is controlled using the Timer 0 control/status bits in
TCON and TMOD: TR0, C/T0, GATE0 and TF0. It can use either the system clock or an external input sig-
nal as its time base. The TH0 register is restricted to a timer function sourced by the system clock. TH0 is
enabled using the Timer 1 run control bit TR1. TH0 sets the Timer 1 overflow flag TF1 on overflow and
thus controls the Timer 1 interrupt.
Timer 1 is inactive in Mode 3, so with Timer 0 in Mode 3, Timer 1 can be turned off and on by switching it
into and out of its Mode 3. When Timer 0 is in Mode 3, Timer 1 can be operated in Modes 0, 1 or 2, but
cannot be clocked by external signals nor set the TF1 flag and generate an interrupt. However, the Timer
1 overflow can be used for baud rate generation. Refer to Section 16 (UART) for information on configur-
ing Timer 1 for baud rate generation.
128
SYSCLK
/INT0
T0
GATE0
PORT0
PORT0
MUX
MUX
12
TR0
TR1
Figure 17.3. T0 Mode 3 Block Diagram
0
1
CKCON
T
M
2
M
T
1
M
T
0
1
0
C/T0
G
A
T
E
1
C
Rev. 1.6
T
1
/
M
T
1
1
TMOD
M
T
1
0
G
A
E
T
0
C
T
0
/
M
T
0
1
M
T
0
0
(8 bits)
(8 bits)
TH0
TL0
TR1
TR0
TF1
TF0
IE1
IT1
IE0
IT0
Interrupt
Interrupt