Ac Characteristics; Table 6 Ac Characteristics - Epson RX8804CE Applications Manual

RX8804CE

7.2. AC Characteristics

Table 6 AC Characteristics

Item
SCL clock frequency
Start condition setup time
Start condition hold time
Data setup time
Data hold time
Stop condition setup time
Bus idle time between
start condition and stop condition
Time when SCL = "L"
Time when SCL = "H"
Rise time for SCL and SDA
Fall time for SCL and SDA
Allowable spike time on bus
Timing chart
START
Protocol
CONDITION
(S)
t
SU ; STA
SCL
(S)
SDA
t
HD ; STA
2
Figure 3 I C-Bus Timing Chart
Note
1. As for the communication time of I
If such communication requires 1 second (Max.) or longer, the I
function. When bus-time-out occur, SDA is released to Hi-Z input mode.
2. But readout data of a clock is stable anytime, and there isn't contradiction.
that data of a clock delay even if access time is prolonged.
* Unless otherwise specified, GND = 0 V , V
Symbol Condition
f
SCL
t
SU;STA
t
HD;STA
t
SU;DAT
t
HD;DAT
t
SU;STO
t
BUF
t
LOW
t
HIGH
t
r
t
f
t
SP
BIT 7 BIT 6
MSB
(A7) (A6)
t t 1 / f
LOW HIGH SCL
t t
r f
t t
SU ; DAT HD ; DAT
2
C-Bus, completion of less than 1 second is recommended.
= 1.6 V to 5.5 V , Ta = −40 C to +105 C
DD
SCL = 100 kHz
Standard Mode
Min. Max.
− −
100
− −
4.7
− −
4.0
− −
250
− −
0
− −
4.0
− −
4.7
− −
4.7
− −
4.0
− −
1.0
− −
0.3
− −
50
BIT 0 ACK
LSB
(R/W) (A)
(A)
t
SP
2
C-Bus interface is reset by the internal bus timeout
Page - 5
SCL = 400 kHz
Fast Mode
Unit
Min. Max.
−
400 kHz
−
0.6 µs
−
0.6 µs
−
100 ns
−
0 ns
−
0.6 µs
−
1.3 µs
−
1.3 µs
−
0.6 µs
−
0.3 µs
−
0.3 µs
−
50 ns
STOP START
CONDITION CONDITION
(P) (S)
t
SU ; STA
(P) (S)
t
BUF
t t
SU ; STO HD ; STA
And it does not occur
ETM59E-05