Ac Characteristics - Epson RA8804 CE Applications Manual

RA8804 CE

7.2. 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
Note:
1. As for the communication of I
communication requires 1 second (Max.) or longer, the I
timeout function.
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.
Reference characteristic data (Typical) I
* 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, completion of less than 1 second is recommended. If such
When bus-time-out occur, SDA turns to Hi-Z input mode.
2
C-bus active current
= 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
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
ETM60E-02