MAXDATA Belinea 101920, Руководство по обслуживанию

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Belinea Technical Service Manual
TABLE 1-3: AC CHARACTERISTICS
Parameter Symbol
Vcc= 2.5-5.5V Vcc= 4.5 - 5.5V
Units Remarks
Min Max Min Max
Clock frequency F
CLK
0 100 0 400 kHz
Clock high time T
HIGH
4000 — 600 — ns
Clock low time T
LOW
4700 — 1300 — ns
SDA and SCL rise time T
R
— 1000 — 300 ns (Note 1)
SDA and SCL fall time T
F
— 300 — 300 ns (Note 1)
START condition hold time T
HD
:
STA
4000 — 600 — ns After this period the first clock
pulse is generated
START condition setup time T
SU
:
STA
4700 — 600 — ns Only relevant for repeated
START condition
Data input hold time T
HD
:
DAT
0 — 0 — ns (Note 2)
Data input setup time T
SU
:
DAT
250 — 100 — ns
STOP condition setup time T
SU
:
STO
4000 — 600 — ns
Output valid from clock T
AA
— 3500 — 900 ns (Note 2)
Bus free time T
BUF
4700 — 1300 — ns Time the bus must be free
before a new transmission can
start
Output fall time from V
IH
minimum to V
IL
maximum
T
OF
— 250 20 + 0.1
C
B
250 ns (Note 1), C
B
≤
100 pF
Input filter spike suppression
(SDA and SCL pins) T
SP
— 100 — 50 ns (Note 3)
Write cycle time T
WR
— 10 — 10 ms Byte or Page mode
Transmit-Only Mode Parameters
Output valid from VCLK T
VAA
— 2000 — 1000 ns
VCLK high time T
VHIGH
4000 — 600 — ns
VCLK low time T
VLOW
4700 — 1300 — ns
VCLK setup time T
VHST
0 — 0 — ns
VCLK hold time T
SPVL
4000 — 600 — ns
Mode transition time T
VHZ
— 500 — 500 ns
Transmit-Only power up time T
VPU
0 — 0 — ns
Input filter spike suppression
(VCLK pin) T
SPV
— 100 — 100 ns
Endurance — 10M — 10M — cycles 25
°
C, V
CC
= 5.0V, Block Mode
(Note 4)
Note 1: Not 100% tested. C
B
= total capacitance of one bus line in pF.
2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region (min-
imum 300 ns) of the falling edge of SCL to avoid unintended generation of START or STOP conditions.
3: The combined T
SP
and V
HYS
specifications are due to Schmitt trigger inputs which provide noise and spike
suppression. This eliminates the need for a T
I
specification for standard operation.
4: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific appli-
cation, please consult the Total Endurance Model which can be obtained on our BBS or website.