IZE4428.pdf 데이터시트 (총 10 페이지) - 파일 다운로드 IZE4428 데이타시트 다운로드

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IZE4428
1К-byte EEPROM microcircuit with function of protection for
writing and programmable secret code.
Microcircuit IZE4428 is designed to use in intellectual plastic cards. Sphere of application:
medical insurance, excess control systems, member cards, smart cards.
Features:
1024 x 8 - arrangement of EEPROM;
Byte - directed addressing;
Protection of memory writing;
1024 х 1 bit arrangement of memory protection ;
Response for reset;
Minimum 10000 cycles of erasure / writing ;
Information storage time - 5 years ;
Location of contact pads and serial interface in accordance with ISO 7816 standard;
Data in memory can be changed only after introduction of correct 2-byte programmable
secret code (PSC);
Purpose of IC contact pads
CP
Symbol
Function
01 I/O Bidirectional data line (open drain )
02
CLK
clock rate input
03
RST
control input (reset )
04 Vcc supply voltage
05
GND
general
1

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Block diagram
IZE4428
High
voltage
multiplier
Circuit
of reset and
holding
Vcc GND
Base memory
EEPROM 1024x8 bit
protcetion memory
PROM 1024x1 bit
Decoder of lines
and column with
ampliffers
Programming
control unit
Secret
logit unit
Interface
unit
I/O RST CLK
Graphical symbol of IC
EE <->
02
CLK
PROM
I/O
01
03 RST
Vcc
GND
04
05
Operating temperature range
Operating temperature range from -35°С to +100°С.
Extreme modes
Symbol
Name of parameter
2
Standard
Measurement

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IZE4428
min max
VСС Supply voltage
VIH Input voltage of high level
VIL Input voltage of low level
Т Operating temperature
range
4,5 5,5
3,5 VСС
0 0,8
-35 +100
unit
V
V
V
°С
Limiting modes
Symbol
VСС
VIH
VIL
Tstg
Name of parameter
Supply voltage
Input voltage of high level
Input voltage of low level
Storage temperature
Standard
min max
-0,3 6,0
- 6,0
-0,3 -
-40 +125
Measurement
unit
V
В
V
°С
They do not guarantee efficiency of ICs at limiting modes. After removal of limiting modes
they guarantee efficiency in extreme mode.
Static parameters
TA = from -35 to +100°С
Symbol
Name of parameter
VIL Input voltage of low
level
VIH Input voltage of high
level
IOL Output current of low
level
IOH Output leakage current
of high level
IIH Input current of high
level
(I/O,CLK,RST)
IСС consumption current
measurement
conditions
VСС=from 4,5 to
5,5V
VСС=from 4,5 to
5,5V
VСС=from 4,5 to
5,5V
VOL= 0,4V
VСС=5,5V
VOH=5,5V
VСС=5,5V
VIH=5,5V
VСС=5,5V,
VIL=0V, VIH=VCC
Standard
min max
0 0,8
3,5 VСС
0,5 -
- 10
- 10
- 10
unit of
measurement
V
V
mА
µА
µА
mА
Dynamic parameters
VСС= from 4,5 to 5,5V, ТA = from -35 to +100°С
Symbol
Name of parameter
Standard
min max
Unit of
measurement
3