st25e64 STMicroelectronics, st25e64 Datasheet - Page 6

• Manufacturer Part Number: st25e64
• Description: Serial Extended Addressing Compatible With I2c Bus 64k 8k X 8 Eeprom
• Manufacturer: STMicroelectronics

ST24E64, ST25E64
Table 7. AC Characteristics
(T
Notes: 1. Sampled only, not 100% tested.
AC MEASUREMENT CONDITIONS
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages 0.3V
Figure 4. AC Testing Input Output Waveforms
6/16
A
t
t
0.8V CC
0.2V CC
DH1DH2
Symbol
DL1DL1
t
t
t
t
CHDX
CLQV
CH1CH2
= –40 to 85 C or 0 to 70 C; V
CL1CL2
t
t
t
t
t
t
t
t
CHCL
CLCH
DXCX
CHDH
DHDL
CLQX
DLCL
CLDX
t
f
W
2. For a reSTART condition, or following a write cycle.
3. The minimum value delays the falling/rising edge of SDA away from SCL = 1 in order to avoid unwanted START and/or STOP
C
conditions.
(3)
(2)
(1)
(1)
t
t
t
t
t
SU:STA
HD:STA
HD:DAT
SU:DAT
SU:STO
t
t
t
f
HIGH
t
Alt
LOW
t
BUF
t
SCL
WR
t
t
t
t
AA
DH
R
F
R
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 Next Data Out Valid
Data Out Hold Time
Clock Frequency
Write Time
0.2V
CC
50ns
= 4.5V to 5.5V or 2.5V to 5.5V)
CC
CC
to 0.8V
to 0.7V
AI00825
0.7V CC
0.3V CC
Parameter
CC
CC
DEVICE OPERATION (cont’d)
Memory Addressing. A data byte in the memory
is addressed through 2 bytes of address informa-
tion. The Most Significant Byte is sent first and the
Least significant Byte is sent after. The Least Sig-
nificant Byte addresses a block of 256 bytes, bits
b12,b11,b10,b9,b8 of the Most Significant Byte
select one block among 32 blocks (one block is 256
bytes).
Most Significant Byte
X = Don’t Care.
Least Significant Byte
b7
X
b6
X
b5
X
Min
600
600
600
100
600
200
200
1.3
1.3
20
20
0
b12
b4
b11
b3
1000
Max
300
300
300
300
400
10
b10
b2
b9
b1
Unit
kHz
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
b8
b0