24C01SC_04 Datasheet, PDF (8/16 Pages) Microchip Technology – 1K/2K 5.0V I2C Serial EEPROMs for Smart Cards

24C01SC/24C02SC
6.4 Noise Protection
The 24C01SC/02SC employs a VCC threshold detector
circuit which disables the internal erase/write logic if the
VCC is below 1.5 volts at nominal conditions.
The SCL and SDA inputs have Schmitt Trigger and
filter circuits which suppress noise spikes to assure
proper device operation even on a noisy bus.
FIGURE 6-1:
CURRENT ADDRESS READ
S
BUS ACTIVITY
MASTER
T
A
R
T
Control
Byte
SDA LINE
S
BUS ACTIVITY
A
C
K
Data n
S
T
O
P
P
N
O
A
C
K
FIGURE 6-2:
RANDOM READ
S
BUS ACTIVITY
T
A
MASTER
R
T
Control
Byte
S
Word
Address (n)
T
A
R
Control
Byte
T
S
T
Data n
O
P
SDA LINE
S
S
P
BUS ACTIVITY
A
A
C
C
K
K
A
N
C
O
K
A
C
K
FIGURE 6-3:
SEQUENTIAL READ
BUS ACTIVITY
MASTER
SDA LINE
BUS ACTIVITY
Control
Byte
A
C
K
Data n
Data n + 1
Data n + 2
A
A
A
C
C
C
K
K
K
S
Data n + X
T
O
P
P
N
O
A
C
K
DS21170E-page 8
 2004 Microchip Technology Inc.