C8051F040-GQ Silicon Laboratories Inc, C8051F040-GQ Datasheet - Page 48

• Manufacturer Part Number: C8051F040-GQ
• Description: IC 8051 MCU 64K FLASH 100TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F04xr

Specifications of C8051F040-GQ

• Program Memory Type: FLASH
• Program Memory Size: 64KB (64K x 8)
• Package / Case: 100-TQFP, 100-VQFP
• 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
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b, 13x12b; D/A 2x10b, 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F0x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4.25 KB
• Interface Type: CAN/SMBus/SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 64
• Number Of Timers: 5
• 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: C8051F040DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 8-bit or 13-ch x 12-bit
• On-chip Dac: 2-ch x 12-bit
• No. Of I/o's: 64
• Ram Memory Size: 4352Byte
• Cpu Speed: 25MHz
• No. Of Timers: 5
• Rohs Compliant: Yes
• Data Rom Size: 64 KB
• A/d Bit Size: 12 bit
• A/d Channels Available: 13
• Height: 1 mm
• Length: 14 mm
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Width: 14 mm
• Package: 100TQFP
• Device Core: 8051
• Family Name: C8051F04x
• Maximum Speed: 25 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1205 - DEV KIT FOR F040/F041/F042/F043
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1204

C8051F040/1/2/3/4/5/6/7
5.1.1. Analog Input Configuration
The analog multiplexer routes signals from external analog input pins, Port 3 I/O pins (See
“17.1.5. Configuring Port 1, 2, and 3 Pins as Analog Inputs” on page
Amplifier, and an on-chip temperature sensor as shown in Figure 5.2.
Analog signals may be input from four external analog input pins (AIN0.0 through AIN0.3) as differential or
single-ended measurements. Additionally, Port 3 I/O Port Pins may be configured to input analog signals.
Port 3 pins configured as analog inputs are selected using the Port Pin Selection register (AMX0PRT). Any
number of Port 3 pins may be selected simultaneously as inputs to the AMUX. Even numbered Port 3 pins
and odd numbered Port 3 pins are routed to separate AMUX inputs. (Note: Even port pins and odd port
pins that are simultaneously selected will be shorted together as “wired-OR”.) In this way, differential mea-
surements may be made when using the Port 3 pins (voltage difference between selected even and odd
Port 3 pins) as shown in Figure 5.2.
The High Voltage Difference Amplifier (HVDA) will accept analog input signals and reject up to 60 volts
common-mode for differential measurement of up to the reference voltage to the ADC (0 to VREF volts).
The output of the HVDA can be selected as an input to the ADC using the AMUX as any other channel is
selected for input. (See
48
PAIN0EN
PAIN2EN
PAIN4EN
PAIN6EN
PAIN1EN
PAIN3EN
PAIN5EN
PAIN7EN
HVAIN +
HVAIN -
HVCAP
HVREF
AIN0.0
AIN0.1
AIN0.2
AIN0.3
P3.6
P3.4
P3.2
P3.0
P3.7
P3.5
P3.3
P3.1
Section “5.2. High-Voltage Difference Amplifier” on page
Figure 5.2. Analog Input Diagram
AGND
TEMP SENSOR
P3EVEN
(WIRED-OR)
P3ODD
(WIRED-OR)
AMP
HV
Rev. 1.5
+
+
+
+
-
-
-
-
0
1
2
3
4
5
6
7
8
AMUX
(SE or
9-to-1
DIFF)
X
AMX0CF
AMX0SL
207), a High Voltage Difference
52).
ADC
12-Bit
SAR
Section