C8051T622-GMR Silicon Labs, C8051T622-GMR Datasheet - Page 17

• Manufacturer Part Number: C8051T622-GMR
• Description: 8-bit Microcontrollers - MCU USB-OTP-16K-QFN24
• Manufacturer: Silicon Labs

Specifications of C8051T622-GMR

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

GROUND NET
GROUND NET
Pin 3 is the only required Ground connection
on the device. The ground lug on the bottom
of the device is used for heat dissipation, and
is optional.
SUPPLY NET
Add ESD protection
diodes designed for
use with USB, such
as Littlefuse
SP0503BAHT or
equivalent.
Keep the USB shield ground
isolated from the device ground.
Pin 2 is the only required Ground connection
on the device. The ground lug on the bottom
of the device is used for heat dissipation, and
is optional.
Add ESD protection
diodes designed for
use with USB, such
as Littlefuse
SP0503BAHT or
equivalent.
Keep the USB shield ground
isolated from the device ground.
Add decoupling/bypass
capacitors close to each
voltage supply pin. Please see
Section 5 for alternate supply
net connection options.
USB
Add decoupling/bypass
capacitors close to each
voltage supply pin. Please see
Section 5 for alternate supply
net connection options.
SUPPLY NET
USB
Figure 1.2. Typical Bus-Powered Connections for the C8051T622/3 and C8051T326
Figure 1.3. Typical Bus-Powered Connections for the C8051T327
4.7µF
4.7µF
C8051T622/3 and C8051T326/7
0.1µF
0.1µF
1µF
1µF
D-
D-
D+
VDD
D+
VDD
VREGIN
VREGIN
VBUS
VBUS
GND
GND
Rev. 1.1
1.8V to 3.6V
P2.0/
GND
C2CK
C2CK
/RST/
P2.0/
/RST/
C2D
GND
C2D
VIO
1KO-
1KO-
5KO
5KO
Unused port pins should be left
floating, configured to push-pull
output, and driven high.
GPIO
Add a 1KO-5KO pull-up resistor
to VIO.
C2CK
C2D
GND
GPIO
RESET SIGNAL
Add a 1KO-5KO pull-up resistor
to VDD.
C2CK
C2D
GND
RESET SIGNAL
Unused port pins should be left
floating, configured to push-pull
output, and driven high.
VIO
VIO can be connected directly
to VDD for 3.3V communication.
Connections needed for
optional debug interface
Connections needed for
optional debug interface
DEBUG SIGNALS
DEBUG SIGNALS
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