U4283BM
Parameters
Fall time SDA, SCL
Period of SCL
HIGH
LOW
Setup Time
Start condition
Data
Stop condition
Time the bus must be free
before a new transmission
can be started
Hold time
Start condition
DATA
Test Conditions / Pins
Pins 2 asn 3
Pin 2
Symbol
t
f
t
H
t
L
t
sSTA
t
sDAT
t
sSTOP
t
wSTA
Min.
Typ.
Max.
300
Unit
ns
4.0
4.7
4.7
250
4.7
4.7
m
s
m
s
m
s
ns
m
s
m
s
m
s
m
s
t
hSTA
t
hDAT
4.0
0
Bus Timing
SDA
t
wSTA
t
r
t
f
t
hSTA
SCL
P
S t
hSTA
t
L
t
hDAT
t
H
t
sSTA
t
hDAT
t
sSTOP
P
93 7671 e
P = Stop, S = Start
Figure 4.
The following hints are recommended:
D
C
3
= 100 nF should be very close to Pin 1 (V
DD
) and
Pin 20 (GND1)
D
4 MHz quartz must be very close to Pin 18 and Pin 19
D
Components of the charge pump (C
1
/R
1
for AM and
C
2
/R
2
for FM) should be very close to Pin 15 with
respect to Pin 14.
D
GND2 (Pin 10 - analog ground) and GND 1
(Pin 20 - digital ground ) must be connected according
to figure 6
6 (9)
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 15-May-96
TEMIC [ TEMIC SEMICONDUCTORS ]
