C8051F988-GM Silicon Laboratories Inc, C8051F988-GM Datasheet - Page 81

• Manufacturer Part Number: C8051F988-GM
• Description: IC MCU 8BIT 4KB FLASH 24QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F9xxr

Specifications of C8051F988-GM

• Program Memory Type: FLASH
• Program Memory Size: 4KB (4K x 8)
• Package / Case: 24-UQFN Exposed Pad, 24-HUQFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F9x
• Core: 8051
• Data Ram Size: 512 B
• Interface Type: I2C, SMBus, Enhanced UART, Enhanced SPI
• Maximum Clock Frequency: 7 KHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.4 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F996DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• On-chip Dac: 10 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1959-5

5.7.
ADC0 on C8051F99x-C8051F98x has an analog multiplexer, referred to as AMUX0.
AMUX0 selects the positive inputs to the single-ended ADC0. Any of the following may be selected as the
positive input: Port I/O pins, the on-chip temperature sensor, Regulated Digital Supply Voltage (Output of
VREG0), VDD Supply, or the positive input may be connected to GND. The ADC0 input channels are
selected in the ADC0MX register described in SFR Definition 5.12.
Important Note About ADC0 Input Configuration: Port pins selected as ADC0 inputs should be
configured as analog inputs, and should be skipped by the Digital Crossbar. To configure a Port pin for
analog input, set to 0 the corresponding bit in register PnMDIN and disable the digital driver (PnMDOUT =
0 and Port Latch = 1). To force the Crossbar to skip a Port pin, set to 1 the corresponding bit in register
PnSKIP. See Section “21. Port Input/Output” on page 213 for more Port I/O configuration details.
ADC0 Analog Multiplexer
*Only available on
24-pin devices.
Sensor
Temp
*P1.4
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.2
P1.3
Digital Supply
VDD
Figure 5.7. ADC0 Multiplexer Block Diagram
ADC0MX
AMUX
Rev. 1.0
C8051F99x-C8051F98x
Gain = 0.5 or 1
Programmable
Attenuator
AIN+
ADC0
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