AK6004A_02 Datasheet, PDF (14/16 Pages) Asahi Kasei Microsystems – I2C bus 4K / 16Kbit Serial CMOS EEPROM

ASAHI KASEI
[AK6004A/08A]
(4) A.C. ELECTRICAL CHARACTERISTICS 2: Fast mode
(4.5V≤VCC≤5.5V, -40°C≤Ta≤85°C, unless otherwise specified)
Parameter
SCK Clock Frequency
Symbol
fSCL
Condition
Min.
Max.
Unit
400
KHz
Noise Suppression Time
tI
Constant at SCL, SDA *7
50
ns
SCL Low to
tAA
SDA Data Out Valid: SDA
0.2
0.9
µs
Time the Bus Must be Free
before a New Transmission
can start
tBUF
1.3
µs
Start Condition Hold Time tHD:STA
0.6
µs
Clock Low Period
tLOW
1.3
µs
Clock High Period
tHIGH
0.6
µs
Start Condition Setup Time tSU:STA
0.6
µs
Data in Hold Time
tHD:DAT
0
µs
Data in Setup Time
tSU:DAT
100
ns
SDA and SCL Rise Time
*7
SDA and SCL Fall Time
*7
Stop Condition Setup Time
tR
tF
tSU:STO
0.3
µs
0.3
µs
0.6
µs
Data Out Hold Time
tDH
50
ns
Write Cycle Time
tWR
*6
10
ms
*6: The write cycle time (tWR) is the time from a valid stop condition of a write
sequence to the end of the internal program cycle.
Since the device will not acknowledge during the internal program cycle, this can be
used to determine when the cycle is complete. This feature (ACK polling) can be
used to maximize bus throughput.
*7: The parameter is periodically sampled and not 100% tested.
„ AC Conditions of Test
Input Pulse Levels
Input Rise and
Fall Times
Output Timing Level
0.1xVCC to 0.9xVCC
10ns
0.5xVCC
R= 466Ω (VCC=1.8V),
1133Ω (VCC=5.5V)
C=100pF
DAI01E-02
- 14 -
Equivalent AC Load Circuit
2002/11