M35101 Datasheet, PDF (1/2 Pages) STMicroelectronics – Contactless Memory Chip 13.56 MHz, 2048-bit High Endurance EEPROM

M35101
Contactless Memory Chip
13.56 MHz, 2048-bit High Endurance EEPROM
DATA BRIEFING
s ISO 14443-2 Type-B Standard Compliant
s 13.56 MHz Carrier Frequency
s 847 kHz Subcarrier Frequency
s 106 Kbit/second Data Transfer
s Internal Tuning Capacitor
s Data Modulation:
– ASK from Reader to Card
– BPSK from Card to Reader
s 2048-bit EEPROM with Write Protect Feature
s BYTE and PAGE READ (up to 16 Bytes)
s BYTE and PAGE WRITE (up to 16 Bytes)
s Self-Timed Programming Cycle with Auto-
Erase
s 100,000 Erase/Write Cycles (minimum)
s 40 Year Data Retention (minimum)
s 5 ms Programming Time (typical)
DESCRIPTION
The M35101 is a contactless memory, powered by
the received carrier electromagnetic wave. It is a
2048-bit EEPROM, organised as 16 pages of
16 x 8 bits.
The M35101 conforms to the ISO 14443-2 Type-B
recommendation for the transfer of power and sig-
nals via radio transmission. The card reader cir-
cuitry amplitude modulates (10% modulation) the
data on the carrier using amplitude shift keying
(ASK). The card replies by load modulating the
data on the carrier using bit phase shift keying
(BPSK) of the subcarrier. The data transfer rate in
each direction is 106 Kbit/second.
Table 1. Signal Names
AC1
Antenna Coil
AC0
Antenna Coil
Antenna
(C20)
Antenna
(C30)
Wafer
Figure 1. Logic Diagram
M35101
Power
Supply
Regulator
2 Kbit
ASK
EEPROM Demodulator
BPSK
Load
Modulator
AC1
AC0
AI02490
October 1999
1/2
Complete data available under NDA.