M24256-A STMicroelectronics, M24256-A Datasheet - Page 11

• Manufacturer Part Number: M24256-A
• Description: 256 Kbit Serial I C Bus EEPROM With Two Chip Enable Lines
• Manufacturer: STMicroelectronics

Table 9. AC Characteristics
Note: 1. For a reSTART condition, or following a write cycle.
Table 10. AC Measurement Conditions
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing
Reference Voltages
Symbol
t
t
t
DH1DH2
t
DL1DL2
t
t
CH1CH2
CL1CL2
CHDX
t
t
t
t
t
CLQV
t
t
t
CHDH
CHCL
CLDX
CLCH
DXCX
DHDL
CLQX
DLCL
t
f
W
C
2. Sampled only, not 100% tested.
3. To avoid spurious STAR T and STOP conditions, a minimum delay is placed between SCL=1 and the falling or rising edge of SDA.
4. This is preliminary data.
3
1
2
2
t
t
t
t
t
HD:STA
HD:DAT
SU:STO
SU:STA
SU:DAT
t
t
Alt.
t
f
HIGH
t
LOW
t
t
BUF
SCL
t
t
WR
t
t
AA
DH
R
R
F
F
Clock Rise Time
Clock Fall Time
SDA Rise Time
SDA Fall Time
Clock High to Input Transition
Clock Pulse Width High
Input Low to Clock Low (START)
Clock Low to Input Transition
Clock Pulse Width Low
Input Transition to Clock
Transition
Clock High to Input High (STOP)
Input High to Input Low (Bus
Free)
Clock Low to Data Out Valid
Data Out Hold Time After Clock
Low
Clock Frequency
Write Time
Parameter
0.2V
0.3V
CC
CC
50 ns
to 0.8V
to 0.7V
CC
CC
V
T
CC
A
Min
600
600
600
100
600
200
200
1.3
1.3
20
20
=–40 to 85 C
0
=4.5 to 5.5 V
Figure 9. AC Testing Input Output Waveforms
0.8V CC
0.2V CC
Max
300
300
300
300
900
400
10
V
T
CC
A
Min
600
600
600
100
600
200
200
1.3
1.3
20
20
=–40 to 85 C
0
M24256-A
=2.5 to 5.5 V
Max
300
300
300
300
900
400
10
V
T
A
4700
4000
4000
4000
CC
Min
250
200
200
4.7
4.7
=–20 to 85 C
20
20
0
=1.8 to 3.6 V
1000
1000
3500
M24256-A
Max
300
300
100
10
0.7V CC
0.3V CC
AI00825
4
11/20
Unit
kHz
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s