C8051F989-GUR Silicon Labs, C8051F989-GUR Datasheet - Page 29
C8051F989-GUR
Manufacturer Part Number
C8051F989-GUR
Description
8-bit Microcontrollers - MCU 4kB 512B RAM
Manufacturer
Silicon Labs
Datasheet
1.C8051F986-GUR.pdf
(322 pages)
Specifications of C8051F989-GUR
Rohs
yes
Core
8051
Data Bus Width
8 bit
Processor Series
C8051
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1.6.
C8051F99x-C8051F98x devices include an on-chip programmable current reference (source or sink) with
two output current settings: low power mode and high current mode. The maximum current output in low
power mode is 63 µA (1 µA steps) and the maximum current output in high current mode is 504 µA (8 µA
steps).
1.7.
C8051F99x-C8051F98x devices include an on-chip programmable voltage comparator: Comparator 0
(CPT0) which is shown in Figure 1.18.
The Comparator offers programmable response time and hysteresis, an analog input multiplexer, and two
outputs that are optionally available at the Port pins: a synchronous “latched” output (CP0), or an
asynchronous “raw” output (CP0A). The asynchronous CP0A signal is available even when the system
clock is not active. This allows the Comparator to operate and generate an output when the device is in
some low power modes.
The comparator inputs may be connected to Port I/O pins or to other internal signals. Port pins may also be
used to directly sense capacitive touch switches.
Programmable Current Reference (IREF0)
Comparator
*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
Figure 1.17. ADC0 Multiplexer Block Diagram
VDD
ADC0MX
AMUX
Rev. 1.1
C8051F99x-C8051F98x
Gain = 0.5 or 1
Programmable
Attenuator
AIN+
ADC0
29
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