C8051T326-GMR Silicon Labs, C8051T326-GMR Datasheet - Page 19
C8051T326-GMR
Manufacturer Part Number
C8051T326-GMR
Description
8-bit Microcontrollers - MCU USB-OTP-16K-QFN28
Manufacturer
Silicon Labs
Datasheet
1.C8051T322-GQR.pdf
(292 pages)
Specifications of C8051T326-GMR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
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*Note : VIO only appears on certain package options. If VIO is not present, the RST pullup can connect to VDD.
SUPPLY NET
USB
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.
Figure 1.4. Typical Bus-Powered Connections
4.7µF
C8051T620/621/320/321/322/323
0.1µF
1µF
D-
D+
VDD
VREGIN
VBUS
GND
Rev. 1.1
1.8V to VDD
C2CK
GND
VIO*
RST/
C2D
1KO-
5KO
GPIO
Unused port pins should be left
floating, configured to push-pull
output, and driven high.
RESET SIGNAL
A 1KO-5KO pull-up resistor can
be connected to VIO* for added
noise immunity.
C2CK
C2D
GND
VIO*
VIO can be connected directly
to VDD.
Connections needed for
optional debug interface
DEBUG SIGNALS
19
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