Device Operation - Harman Kardon DVD 37 Service Manual

harman/kardon
Table 5. AC Characteristics
Applicable over recommended operating range from T
100 pF (unless otherwise noted)
Symbol Parameter
f Clock Frequency, SCL
SCL
t Clock Pulse Width Low
LOW
t Clock Pulse Width High
HIGH
t Noise Suppression Time
I
t Clock Low to Data Out Valid
AA
Time the bus must be free before
t
BUF
a new transmission can start
t Start Hold Time
HD.STA
t Start Set-up Time
SU.STA
t Data In Hold Time
HD.DAT
t Data In Set-up Time
SU.DAT
t Inputs Rise Time
R
t Inputs Fall Time
F
t Stop Set-up Time
SU.STO
t Data Out Hold Time
DH
t Write Cycle Time
WR
(2)
Endurance 5.0V, 25°C, Page Mode
Note: 1. This parameter is characterized and is not 100% tested (T
2. This parameter is characterized.

Device Operation

= −40°C to +125°C, V
A
(1)
(2)
(2)
(2)
CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an exter-
nal device. Data on the SDA pin may change only during SCL low time periods (see to
Figure 4 on page 7). Data changes during SCL high periods will indicate a start or stop
condition as defined below.
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition
which must precede any other command (see to Figure 5 on page 7).
STOP CONDITION: A low-to-high transition of SDA with SCL high is a stop condition.
After a read sequence, the stop command will place the EEPROM in a standby power
mode (see Figure 5 on page 7).
ACKNOWLEDGE: All addresses and data words are serially transmitted to and from the
EEPROM in 8-bit words. The EEPROM sends a "0" to acknowledge that it has received
each word. This happens during the ninth clock cycle.
STANDBY MODE: The AT24C01A/02/04/08A/16A features a low-power standby mode
which is enabled: (a) upon power-up and (b) after the receipt of the STOP bit and the
completion of any internal operations.
AT24C01A/02/04/08A/16A
= +2.7V to +5.5V, CL = 1 TTL Gate and
CC
AT24C01A/02/04/08A/16A
Min
1.2
0.6
0.1
1.2
0.6
0.6
0
100
0.6
50
1M
= 25°C).
A
Service manual DVD37EU
Max Units
400 kHz
µs
µs
50 ns
0.9 µs
µs
µs
µs
µs
ns
300 ns
300 ns
µs
ns
5 ms
Write Cycles
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