C8051T603-GS(2007) View Datasheet(PDF) - Silicon Laboratories
Part Name
Description
MFG CO.
C8051T603-GS Datasheet PDF : 168 Pages
| |||
C8051T600/1/2/3/4/5
1.7. 10-Bit Analog to Digital Converter (C8051T600/2/4)
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 (VDD) are available as ADC inputs. User firmware may shut down the ADC when it is not in
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.
Temp
Sensor
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
VDD
Configuration and Control Registers
10-to-1
AMUX
X1 or
X0.5
Start
Conversion
10 bit
SAR
10
ADC
Software Write
T0 Overflow
TMR2 Overflow
T1 Overflow
External
Convert Start
ADC Data
Registers
End of
Conversion
Interrupt
Figure 1.8. 10-Bit ADC Block Diagram
Window Compare
Logic
Window
Compare
Interrupt
Rev. 0.5
21
Share Link: 