Datasheet

R8C/35C Group 5. Electrical Characteristics
R01DS0006EJ0100 Rev 1.00 Page 41 of 54
Aug. 24, 2010
Notes:
1. V
CC = 1.8 to 5.5 V, VSS = 0 V and Topr = −20 to 85°C (N version) / −40 to 85°C (D version), unless otherwise specified.
2. 1t
CYC = 1/f1(s)
Figure 5.7 I/O Timing of I
2
C bus Interface
Table 5.16 Timing Requirements of I
2
C bus Interface
(1)
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
t
SCL SCL input cycle time
12t
CYC + 600
(2)
−−ns
t
SCLH SCL input “H” width
3t
CYC + 300
(2)
−−ns
t
SCLL SCL input “L” width
5t
CYC + 500
(2)
−−ns
t
sf SCL, SDA input fall time −−300 ns
t
SP SCL, SDA input spike pulse rejection time −−
1tCYC
(2)
ns
t
BUF SDA input bus-free time
5t
CYC
(2)
−−ns
t
STAH Start condition input hold time
3t
CYC
(2)
−−ns
t
STAS Retransmit start condition input setup time
3t
CYC
(2)
−−ns
t
STOP Stop condition input setup time
3t
CYC
(2)
−−ns
t
SDAS Data input setup time
1t
CYC + 40
(2)
−−ns
t
SDAH Data input hold time 10 −−ns
SDA
tSTAH
tSCLL
tBUF
VIH
VIL
tSCLH
SCL
tsr
tsf
tSDAH
tSCL
tSTAS
tSP tSTOP
tSDAS
P
(2)
S
(1)
Sr
(3)
P
(2)
Notes:
1. Start condition
2. Stop condition
3. Retransmit start condition