R2023K/T
AC ELECTRICAL CHARACTERISTICS
Unless otherwise specified: V
SS
=0V,Topt=-40 to +85°C
Input and Output Conditions: V
IH
=0.8×V
DD
,V
IL
=0.2×V
DD
,V
OH
=0.8×V
DD
,V
OL
=0.2×V
DD
,CL=50pF
Sym
Item
Condi-
Unit
V
DD
≥1.7V
*1)
-bol
Tions
Min.
Typ.
Max.
f
SCL
SCL Clock Frequency
400
kHz
t
LOW
SCL Clock Low Time
1.3
µs
t
HIGH
SCL Clock High Time
0.6
µs
t
HD;STA
Start Condition Hold Time
0.6
µs
t
SU;STO
Stop Condition Set Up Time
0.6
µs
t
SU;STA
Start Condition Set Up Time
0.6
µs
t
SU;DAT
Data Set Up Time
200
ns
t
HD;DAT
Data Hold Time
0
ns
t
PL;DAT
SDA “L” Stable Time
0.9
µs
After Falling of SCL
t
PZ;DAT
SDA off Stable Time
0.9
µs
After Falling of SCL
t
R
Rising Time of SCL and SDA
300
ns
(input)
t
F
Falling Time of SCL and SDA
300
ns
(input)
t
SP
Spike Width that can be
50
ns
removed with Input Filter
t
RCV
Recovery Time from Stop
62
µs
Condition to Start Condition
*) For reading/writing timing, see “P.28 Interfacing with the CPU
•Data
Transmission under Special Conditions”.
S
Sr
P
SCL
t
LOW
t
HIGH
t
HD;STA
t
SP
SDA(IN)
t
HD;STA
t
SU;DAT
t
HD;DAT
t
SU;STA
t
SU;STO
SDA(OUT)
t
PL;DAT
S
Sr
t
PZ;DAT
P
Start Condition
Repeated Start Condition
Stop Condition
6
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
