CHAPTER 31 ELECTRICAL SPECIFICATIONS
Page 893 of 920
Note 1.
The first clock pulse is generated after this period when the start/restart condition is detected.
Note 2.
The maximum value (MAX.) of t
HD: DAT
is during normal transfer and a wait state is inserted in the ACK (acknowledge)
timing.
Remark
The maximum value of C
b
(communication line capacitance) and the value of R
b
(communication line pull-up resistor) at
that time in each mode are as follows.
Fast mode plus: C
b
= 120 pF, R
b
= 1.1 k
Ω
IICA serial transfer timing
Remark
n = 0, 1
(3) I
2
C fast mode plus
(T
A
=
‒
40 to +85
°
C, 1.8 V
≤
V
DD
≤
3.6 V, V
SS
= 0 V)
Parameter
Symbol
Conditions
HS (high-speed main)
mode
LS (low-speed main)
mode
Unit
MIN.
MAX.
MIN.
MAX.
SCLA0 clock frequency f
SCL
Fast mode plus:
f
CLK
≥
10 MHz
2.7 V
≤
V
DD
≤
3.6 V
0
1000
—
kHz
Setup time of restart
condition
t
SU
: STA 2.7 V
≤
V
DD
≤
3.6 V
0.26
—
μ
s
Hold time
t
HD
: STA 2.7 V
≤
V
DD
≤
3.6 V
0.26
—
μ
s
Hold time when
SCLA0 = “L”
t
LOW
2.7 V
≤
V
DD
≤
3.6 V
0.5
—
μ
s
Hold time when
SCLA0 = “H”
t
HIGH
2.7 V
≤
V
DD
≤
3.6 V
0.26
—
μ
s
Data setup time
(reception)
t
SU
: DAT 2.7 V
≤
V
DD
≤
3.6 V
50
—
ns
Data hold time
(transmission)
t
HD
: DAT 2.7 V
≤
V
DD
≤
3.6 V
0
0.45
—
μ
s
Setup time of stop
condition
t
SU
: STO 2.7 V
≤
V
DD
≤
3.6 V
0.26
—
μ
s
Bus-free time
t
BUF
2.7 V
≤
V
DD
≤
3.6 V
0.5
—
μ
s
t
SU: DAT
t
HD: STA
Restart
condition
SCLAn
SDAAn
t
LOW
t
HIGH
t
SU: STA
t
HD: STA
t
SU: STO
Stop
condition
Stop
condition
Start
condition
t
HD: DAT
t
BUF
Содержание RL78/G1H
Страница 941: ...R01UH0575EJ0120 RL78 G1H...