ncn6000 ON Semiconductor, ncn6000 Datasheet - Page 12

• Manufacturer Part Number: ncn6000
• Description: Compact Smart Card Interface Ic
• Manufacturer: ON Semiconductor

Programming and Status Functions
accordingly prior to pull Chip Select (pin 6) Low.
Table 1. Programming and Status Functions Pinout Logic
Table 2. Status Pin Logic Output
Pins
The NCN6000 features a programming interface and a status interface. Figure 4 illustrates the programming mode.
The PGM signal, pin 3, controls the mode of operation (chip programming or smart card transaction) and must be set up
5
6
3
1
2
7
8
CRD_VCC Overload
CARD PRESENT
STATUS
RESET
I/O (in)
Name
PGM
CS
A0
A1
DC−DC
Name
None
None
Vbat
Prg. 3.0 V/5.0 V
Not Affected
Rising Edge
CRD_VCC
Latch On
0/1
0/1
0/1
0
0
CS
H
L
L
L
L
L
Divide Ratio
Not Affected
Rising Edge
CLOCK_IN
Latch On
PGM
H
H
H
H
X
L
0/1
0/1
0/1
0
0
A1
H
H
X
X
L
L
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Not Affected
Rising Edge
A0
H
H
CRD_DET
X
X
L
L
Latch On
NCN6000
0/1
0/1
0
1
1
No Chip Access
Programming Mode, No Read Available
Low: No Card Inserted
High: Card inserted
Low: DC−DC Over Range
High: DC−DC Operates Normally
Low: Vbat Within Range
High: Vbat Below Minimum range
Low: CRD_VCC Voltage Below Minimum Range
High: CRD_VCC in Range
12
CLOCK STOP
AND START
Not Affected
Rising Edge
Latch On
0/1
0/1
0
0
1
Status Logic Level
Poll Card
Status
READ
Z
Z
0
1
0
0
DC−DC
Status
READ
Z
Z
0
1
1
0
Status
READ
Vbat
0
1
0
1
Z
Z
CRD_VCC
Status
READ
Z
Z
0
1
1
1