AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 9

• Manufacturer Part Number: AT83EC5123
• Description: (AT8xx512x) Smart Card Reader ICs
• Manufacturer: ATMEL Corporation

Table 1. Pinout Description (Continued)
4202B–SCR–07/03
CVCC
DVCC
CVSS
AVSS
Port
VCC
VSS
LI
20
18
17
19
16
53
1
12
10
11
25
8
9
1
31
29
28
10
30
25
66
15
13
12
14
26
11
5
Internal
Supply
Power
ESD
PWR
PWR
PWR
PWR
GND
GND
GND
I/O
Reset
Level
Supply Voltage
VCC is used to power the internal voltage regulators and internal I/O’s
DC/DC Input
LI must be tied to VCC through an external coil and provide the current for
the pump charge of the DC/DC converter
Card Supply Voltage
CVCC is the programmable voltage output for the Card interface. It must be
connected to an external decoupling capacitor
Digital Supply Voltage
DVCC is used to supply the digital core and internal I/O’s. It is internally
connected to the output of a 3.3V voltage regulator and must be connected
to an external decoupling capacitor
DC/DC Ground
CVSS is used to sink high shunt currents from the external coil
Digital Ground
VSS is used to supply the buffer ring and the digital core
Analog Ground
AVSS is used to supply the on-chip PLL and the USB drivers
Alt
Config
Reset
Conf 1
AT8xC5122/23
Conf 2
Conf 3
Led
9