Datasheet

R01DS0011EJ0101 Rev.1.01 Page 73 of 102
Oct 28, 2011
R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 5. Electrical Characteristics
Note:
1. 1t
CYC = 1/f1(s)
Figure 5.7 I/O Timing of I
2
C bus Interface
Table 5.25 Timing Requirements of I
2
C bus Interface
(1)
(VCC = 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.)
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
t
SCL SCL input cycle time
12tCYC + 600
(1)
––ns
t
SCLH SCL input “H” width
3t
CYC + 300
(1)
––ns
t
SCLL SCL input “L” width
5tCYC + 500
(1)
––ns
t
sf SCL, SDA input fall time – – 300 ns
t
SP SCL, SDA input spike pulse rejection time – –
1t
CYC
(1)
ns
t
BUF SDA input bus-free time
5tCYC
(1)
––ns
t
STAH Start condition input hold time
3t
CYC
(1)
––ns
t
STAS Retransmit start condition input setup time
3t
CYC
(1)
––ns
t
STOP Stop condition input setup time
3t
CYC
(1)
––ns
t
SDAS Data input setup time
1t
CYC + 40
(1)
––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