c8051t602 Silicon Laboratories, c8051t602 Datasheet - Page 21

• Manufacturer Part Number: c8051t602
• Description: Mixed Signal Otp Eprom Mcu Family
• Manufacturer: Silicon Laboratories

1.7.
The C8051T600/2/4 include an on-chip 10-bit SAR ADC with a 10-channel input multiplexer. With a maxi-
mum throughput of 500 ksps, the ADC offers true 10-bit accuracy with an INL of ±1LSB. The ADC system
includes a configurable analog multiplexer that selects the ADC input, and gain settings of 1x or 0.5x. Each
Port pin is available as an ADC input; additionally, the on-chip Temperature Sensor output and the power
supply voltage (V
use to save power.
Conversions can be started in five ways: a software command, an overflow of Timer 0, 1, or 2, or an exter-
nal convert start signal. This flexibility allows the start of conversion to be triggered by software events, a
periodic signal (timer overflows), or external HW signals. Conversion completions are indicated by a status
bit and an interrupt (if enabled). The resulting 10-bit data word is latched into two SFRs upon completion of
a conversion.
An 8-bit compatibility mode is included in the device to facilitate development and backwards-compatibility
with the C8051F300.
Window compare registers for the ADC data can be configured to interrupt the controller when ADC data is
either within or outside of a specified range. The ADC can monitor a key voltage continuously in back-
ground mode, but not interrupt the controller unless the converted data is within or outside of the specified
range.
Sensor
Temp
10-Bit Analog to Digital Converter (C8051T600/2/4)
VDD
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
DD
) are available as ADC inputs. User firmware may shut down the ADC when it is not in
10-to-1
AMUX
Figure 1.8. 10-Bit ADC Block Diagram
Configuration and Control Registers
X1 or
X0.5
Rev. 0.5
C8051T600/1/2/3/4/5
10 bit
ADC
SAR
End of
Conversion
Interrupt
Conversion
Start
Window Compare
10
Logic
Software Write
T0 Overflow
TMR2 Overflow
T1 Overflow
External
Convert Start
ADC Data
Registers
Window
Compare
Interrupt
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