C8051T322-GQR Silicon Labs, C8051T322-GQR Datasheet - Page 76

• Manufacturer Part Number: C8051T322-GQR
• Description: 8-bit Microcontrollers - MCU USB-OTP-16K-LQFP32
• Manufacturer: Silicon Labs

Specifications of C8051T322-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051T620/621/320/321/322/323
The Comparator output can be polled in software, used as an interrupt source, and/or routed to a Port pin.
When routed to a Port pin, the Comparator output is available asynchronous or synchronous to the system
clock; the asynchronous output is available even in STOP mode (with no system clock active). When dis-
abled, the Comparator output (if assigned to a Port I/O pin via the Crossbar) defaults to the logic low state,
and the power supply to the comparator is turned off. See Section “22.3. Priority Crossbar Decoder” on
page 137 for details on configuring Comparator outputs via the digital Crossbar. Comparator inputs can be
externally driven from –0.25 V to (V
trical specifications are given in Section “7. Electrical Characteristics” on page 33.
The Comparator response time may be configured in software via the CPTnMD registers (see SFR Defini-
tion 14.2 and SFR Definition 14.4). Selecting a longer response time reduces the Comparator supply cur-
rent.
76
Comparator
Input Mux
CPT1MD
Figure 14.2. Comparator1 Functional Block Diagram
CP1 +
CP1 -
DD
+
-
) + 0.25 V without damage or upset. The complete Comparator elec-
CPT1CN
VDD
GND
CP1RIF
CP1FIF
Rev. 1.1
(SYNCHRONIZER)
D
SET
CLR
Q
Q
0
1
0
1
D
SET
CLR
Q
Q
CP1EN
Crossbar
0
1
EA
0
1
CP1A
Interrupt
CP1
CP1