Справочник Пользователя для Hitachi H8/3692
Rev. 1.0, 07/01, page 311 of 372
Table 20-12 I
2
C Bus Interface Timing
V
CC
= 2.7 V to 5.5 V, V
SS
= 0.0 V, T
a
= –20 to +75°C, unless otherwise specified.
Test
Values
Reference
Item
Symbol
Condition Min
Typ
Max
Unit
Figure
SCL input cycle time
t
SCL
12t
cyc
+ 600 —
—
ns
Figure 20-4
SCL input high width
t
SCLH
3t
cyc
+ 300
—
—
ns
SCL input low width
t
SCLL
5t
cyc
+ 300
—
—
ns
SCL and SDA input
fall time
fall time
t
Sf
—
—
300
ns
SCL and SDA input
spike pulse removal
time
spike pulse removal
time
t
SP
—
—
1t
cyc
ns
SDA input bus-free
time
time
t
BUF
5t
cyc
—
—
ns
Start condition input
hold time
hold time
t
STAH
3t
cyc
—
—
ns
Retransmission start
condition input setup
time
condition input setup
time
t
STAS
3t
cyc
—
—
ns
Setup time for stop
condition input
condition input
t
STOS
3t
cyc
—
—
ns
Data-input setup time
t
SDAS
1t
cyc
+20
—
—
ns
Data-input hold time
t
SDAH
0
—
—
ns
Capacitive load of
SCL and SDA
SCL and SDA
c
b
0
—
400
pF
SCL and SDA output
fall time
fall time
t
Sf
V
CC
= 4.0 to
5.5 V
—
—
250
ns
—
—
300