C8051F042-GQR Silicon Laboratories Inc, C8051F042-GQR Datasheet - Page 302

• Manufacturer Part Number: C8051F042-GQR
• Description: IC 8051 MCU 64K FLASH 100TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F04xr

Specifications of C8051F042-GQR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: CAN, 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, 13x10b; D/A 2x10b, 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• For Use With: 336-1205 - DEV KIT FOR F040/F041/F042/F043
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

C8051F040/1/2/3/4/5/6/7
300
Bit7-5:
Bit4-3:
Bit2:
Bit1:
Bit0:
SFR Address: TMR2CF:0xC9;TMR3CF:0xC9;TMR4CF:0xC9
SFR Page TMR2CF: page 0;TMR3CF: page 1;TMR4CF: page 2
Bit7
-
Reserved.
TnM1 and TnM0: Timer Clock Mode Select Bits.
Bits used to select the Timer clock source. The sources can be the System Clock
(SYSCLK), SYSCLK divided by 2 or 12, or an external clock signal routed to Tn (port pin)
divided by 8. Clock source is selected as follows:
00: SYSCLK/12
01: SYSCLK
10: EXTERNAL CLOCK/8
11: SYSCLK/2
TOGn: Toggle output state bit.
When timer is used to toggle a port pin, this bit can be used to read the state of the output, or
can be written to in order to force the state of the output.
TnOE: Timer output enable bit.
This bit enables the timer to output a 50% duty cycle output to the timer’s assigned external
port pin.
NOTE: A timer is configured for Square Wave Output as follows:
CP/RLn = 0
C/Tn
TnOE = 1
Load RCAPnH:RCAPnL (See
page
Configure Port Pin for output (See
0: Output of toggle mode not available at Timers’ assigned port pin.
1: Output of toggle mode available at Timers’ assigned port pin.
DCEN: Decrement Enable Bit.
This bit enables the timer to count up or down as determined by the state of TnEX.
0: Timer will count up, regardless of the state of TnEX.
1: Timer will count up or down depending on the state of TnEX as follows:
Bit6
298).
-
SFR Definition 23.9. TMRnCF: Timer n Configuration
= 0
if TnEX = 0, the timer counts DOWN
if TnEX = 1, the timer counts UP.
Bit5
-
TnM1
R/W
Bit4
Section “Equation 23.1. Square Wave Frequency” on
Section “17. Port Input/Output” on page
Rev. 1.5
TnM0
R/W
Bit3
TOGn
R/W
Bit2
TnOE
R/W
Bit1
DCEN
R/W
Bit0
203).
00000000
Addressable
Reset Value
Bit