|
|
PDF IZ4442 Data sheet ( Hoja de datos )
| Número de pieza | IZ4442 | |
| Descripción | Intelligent 256 byte EEPROM with wirte protect function & security logic | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de IZ4442 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
|
No Preview Available !
m TECHNICAL DATA
U.coINTELLIGENT 256-BYTE EEPROM WITH WRITE PROTECT
et4FUNCTION AND PROGRAMMABLE SECURITY CODE (PSC)
SheFeatures
ta• 256 x 8-bit EEPROM organization
a• Byte-wise addressing
.D• Irreversible byte-wise write protection of lowest
w• 32 addresses (Byte 0...31)
w• 32 x 1-bit organization of protection memory
w • Two-wire link protocol
• End of processing indicated at data output
• Answer-to-Reset ace. to ISO standard 7816-3
m• Programming time 2.5 ms per byte for both erasing
• and writing
o• Minimum of 104 write/erase cycles1)
• Data retention for minimum of ten years1)
.c• Contact configuration and serial interface in accordance
• with ISO standard 7816 (synchronous transmission)
UAdditional Feature of IZE4442
t4Data can only be changed after entry of the correct 3-byte programmable security code (security
memory)
eType
Ordering Code
Package
eIZE4442 M2.2
on request
Wire-Bonded Module M2.2
IZE4442 C
on request
Chip
hIZE4442 M2.2
on request
Wire-Bonded Module M2.2
IZE4442 C
on request
Chip
S1) Values are temperature dependent, for further information please refer to your sales office.
taPin Configuration(top view)
a(Card Contacts)Pin Definitions and Functions
.DCard Contact
C1
C2
wC3
C4
wC5
wC6
Symbol
VCC
RST
CLK
N.C.
GND
N.C.
Function
Supply voltage
Reset
Clock input
Not connected
Ground
Not connected
C7 I/O Bi-directional data line
(open drain)
omC8
N.C.
Not connected
.cIZE4442 comes as a M2.2 wire-bonded module for embedding in plastic cards or as a die for
www.DataSheet4Ucustomer packaging.
1
1 page  
IZ4442
Processing Mode
In this mode the 1C processes internally. The 1C has to be clocked continuously until I/O, which was
switched to level L after the first falling edge of CLK, is set to high impedance level Z. Any start and
stop condition is discarded during this mode.
Note: The RST line is low during the modes mentioned above. If RST is set to high during the CLK
low level any operation is aborted and I/O is switched to high impedance Z (Break).
Figure 3 Operational Modes
Commands
Command Format
Each command consists of three bytes:
MSB Control LSB
MSB
Address
LSB
MSB Data
LSB
B7 B6 B5 B4 B3 B2 B1 B0 A7 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
5
5 Page 
IZ4442
2.3.5 Read Security Memory
Similar to the read command for the protection memory this command reads out the 4 bytes of the
security memory. The number of dock pulses during the outgoing data mode is 32. I/O is switched to
high impedance Z by an additional pulse. Without a proceeding successful verification of the PSC the
output of the reference bytes is suppressed, that means I/O outputs state L for the reference data
bytes.
Address
(decimal)
Main Memory
Protection Memory
Security Memory
255 Data Byte 255 (D7...D0)
:
:
:
-
-
32 Data Byte 32 (D7...D0)
-
-
31 Data Byte 31 (D7...D0) Protection Bit 31 (D31)
-
:
:
:
3
Data Byte 3 (D7...D0)
Protection Bit 3 (D3) Reference Data Byte 3 (07...D0)
2
Data Byte 2 (D7...D0)
Protection Bit 2 (D2) Reference Data Byte 2 (D7...D0)
1
Data Byte 1 (D7...D0)
Protection Bit 1 (D1) Reference Data Byte 1 (D7...D0)
0
Data Byte 0 (D7...D0)
Protection Bit 0 (D0) Error Counter (0,0,0,0,0,D2,D1,D0)
Command: READ SECURITY MEMORY
Control
B7 B6 B5 B4 B3
Binary
00110
Hexadecimal
31H
Address
B2 B1 BO A7...AO
0 0 1 No effect
No effect
Data
D7...DO
No effect
No effect
Figure 9 Read Security Memory
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet IZ4442.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| IZ4442 | Intelligent 256 byte EEPROM with wirte protect function & security logic | IK Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |