at83c21gc ATMEL Corporation, at83c21gc Datasheet - Page 6

• Manufacturer Part Number: at83c21gc
• Description: Gemcore Serial Lite Pro
• Manufacturer: ATMEL Corporation

Table 1. Port Signal Description (Continued)
6
CVSS
Port
CV
DV
EV
VSS
CC
CC
CC
AT83C21GC
Signal
Name
Internal
Supply
Power
V
CC
ESD
Type
PWR
PWR
PWR
GND
GND
Description
Card Supply Voltage
CV
to an external decoupling capacitor.
Digital Supply Voltage
DV
output of a 3V regulator and must be connected to an external decoupling capacitor.
Extra Supply Voltage
EV
connected to an external decoupling capacitor. This reference voltage is generated
internally (automatically or not), or it can be connected to an external voltage
reference.
DC/DC Ground
CVSS is used to sink high shunt currents from the external coil.
Ground
CC
CC
CC
is the programmable voltage output for the Card interface. It must be connected
is used to supply the digital core and internal I/Os. It is internally connected to the
is used to supply the level shifters of UART interface I/O pins. It must be
4247DS–SCR–03/07