Datasheet

R8C/36C Group 5. Electrical Characteristics
R01DS0018EJ0110 Rev.1.10 Page 44 of 59
Nov 02, 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
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 — —
1t
CYC
(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
SCL
Notes:
1. Start condition
2. Stop condition
3. Retransmit start condition
tBUF
VIH
VIL
P
(2)
S
(1)
tSTAH
tSCLH
tSCLL
tSf tSr
tSCL
tSDAH
Sr
(3)
P
(2)
tSDAS
tSTAS
tSP
tSTOP