AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 18

• Manufacturer Part Number: AT89C5122
• Description: MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
• Manufacturer: ATMEL [ATMEL Corporation]

USB Keyboard with Smart Card Reader Using the AT8xC5122 and AT89C5122DS Versions
18
Notes :
1 - Pin configuration depends on product versions
AT8xC5122/23
Keyboard Matrix
USB
VBUS
GND
D+
D-
GND
VCC
C3
R4
GND
VCC
R1
10mA Max
R2
R3
GND
C2
C4
C0
C1
C2
C3
C4
C5
C6
C7
C9
GND
VREF
D+
D-
KB0
KB1
KB2
KB3
KB4
KB5
KB6
KB7
P3[0-1,3-4]
P2[0-7]
P0[0-7]
PLLF
EA/VCC (1)
DVCC
AVSS
VCC
VCC
GND
VSS
GND
C8
XTAL1
AVCC
VCC
CPRES
Q1
CRST1
CCLK1
XTAL2
CVCC
CVSS
CRST
CCLK
LEDx
CIO1
GND
RST
CC4
CC8
CIO
LI
C1
GND
C6
C10
L1
GND
C7
R5
Capacitor
GND
VCC
Optional
VCC
VCC
Alternate Card
C1
C2
C3
C7
C5
C1
C5
C2
C3
C4
C7
C8
S1
Smart Card
VCC
RST
CLK
I/O
GND
S1
VCC
GND
RST
CLK
C4
I/O
C8
4202D–SCR–06/05
GND
S2