X1243 – Preliminary Information
CAPACITANCE (T = 25°C, f = 1.0 MHz, V = 5V)
A
CC
Symbol
Parameter
Max.
Unit
pF
Test Conditions
= 0V
(1)
C
Output Capacitance (SDA, IRQ)
Input Capacitance (SCL)
8
6
V
OUT
OUT
(1)
C
pF
V
= 0V
IN
IN
Note: (1) This parameter is periodically sampled and not 100% tested.
AC CHARACTERISTICS
AC Test Conditions
EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR
= 5V
V
CC
Standard Output Load for testing the device with
Input pulse levels
V
x 0.1 to V x 0.9
CC
CC
V
= 5.0V
CC
Input rise and fall times
Input and output timing levels
Output load
10ns
V
x 0.5
5.0V
CC
Standard output load
For V = 0.4V
OL
1533Ω
and I = 3 mA
OL
SDA.
IRQ
100pF
AC SPECIFICATIONS (T = -40°C to +85°C, V
= +2.7V to +5.5V, unless otherwise specified.)
A
CC
400kHz Option
Symbol
Parameter
Min.
Max.
Unit
kHz
ns
f
SCL Clock Frequency
0
400
SCL
(1)
t
t
Pulse width Suppression Time at inputs
SCL LOW to SDA Data Out Valid
Time the bus must be free before a new transmission can start
Clock LOW Time
50
IN
t
0.1
0.9
µs
AA
1.3
µs
BUF
t
1.3
µs
LOW
t
Clock HIGH Time
0.6
µs
HIGH
t
Start Condition Setup Time
Start Condition Hold Time
Data In Setup Time
0.6
µs
SU:STA
HD:STA
SU:DAT
HD:DAT
SU:STO
t
t
0.6
µs
100
ns
t
t
Data In Hold Time
0
0.6
µs
Stop Condition Setup Time
Data Output Hold Time
µs
t
50
ns
DH
(1)
t
SDA and SCL Rise Time
20 + .1Cb(2)
20 + .1Cb(2)
300
300
400
ns
R
(1)
t
SDA and SCL Fall Time
ns
F
Cb
Capacitive load for each bus line
pF
Notes: (1) This parameter is periodically sampled and not 100% tested.
(2) Cb = total capacitance of one bus line in pF.
Characteristics subject to change without notice. 14 of 18
REV 1.1.4 5/31/01
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XICOR [ XICOR INC. ]
