6/( (

6KRUW3URGXFW ,QIRUPDWLRQ

6 / 7



*HQHUDO'HVFULSWLRQ

SLE 5536/36E is designed for applications in prepaid telephone cards. The chip consists of an

EEPROM memory of 221 bit, a ROM of 16 bits, a control/security unit and a special computing unit

for chip authentication. The shaded blocks in the block diagram (Figure 3) contain the enhanced

features of SLE 5536/36E compared to SLE 4406/06E.

&RQWURO8QLW6HFXULW\,QWHUIDFH

&/.

,2

9&&

*1'

567

$GGUHVV

8QLW

$XWKHQWLFDWLRQ

8QLW

3URJUDPPLQJ8QLW

0HPRU\8QLW

Counter

Identification Area

Data Areas

16 bit Manufacturer Code

8 bit Manufacturer Data

40 bit blockable PROM

Authenti-

cation Key 1

6/(

6/((

Identification Area

16 bit Manufacturer Code

48 bit blockable PROM

/HJHQG

Shaded blocks - Enhanced features of SLE 5536/36E compared to SLE 4406/06E

Blocks marked by cross hatch - Defined by chip manufacturer

optional

Authenti-

cation Key 2

Backup Unit

)LJXUH %ORFN'LDJUDP

• 0HPRU\8QLW

Counter, Identification Data (e.g. serial number, expiry date) and Data Areas.

• $GGUHVV8QLW

Setting of the address counter is synchronously with the CLK.

• 3URJUDPPLQJ 8QLW

The programming voltage for the EEPROM/PROM is generated internally.