R8C23 datasheet(39/52 Pages) RENESAS

39 / 52 page

R8C/22 Group, R8C/23 Group

5. Electrical Characteristics

Rev.1.10 Mar 16, 2007

Page 39 of 48

REJ03B0097-0110

NOTES:

VCC = 2.7 to 5.5 V, VSS = 0V at Topr = -40 to 85

°C (D, J version) / -40 to 125°C (K version), unless otherwise specified.

1tCYC = 1/f1(s)

Figure 5.7

I/O Timing of I2C Bus Interface

Table 5.13

Timing Requirements of I2C Bus Interface(1)

Symbol

Parameter

Conditions

Standard

Unit

Min.

Typ.

Max.

tSCL

SCL input cycle time

12tCYC +

600(2)

−−

tSCLH

SCL input “H” width

3tCYC +

300(2)

−−

tSCLL

SCL input “L” width

5tCYC +

300(2)

−−

tsf

SCL, SDA input falling time

−−

300

tSP

SCL, SDA input spike pulse rejection time

−−

1tCYC(2)

tBUF

SDA input bus-free time

5tCYC(2)

−−

tSTAH

Start condition input hole time

3tCYC(2)

−−

tSTAS

Retransmit start condition input setup time

3tCYC(2)

−−

tSTOP

Stop condition input setup time

3tCYC(2)

−−

tSOAS

Data input setup time

1tCYC +

20(2)

−−

tSDAH

Data input hold time

−−

SDA

SCL

tBUF

VIH

VIL

P(2)

S(1)

tSTAH

tSCLH

tSCLL

tSf

tSr

tSCL

tSDAH

Sr(3)

P(2)

tSDAS

tSTAS

tSP

tSTOP

NOTES:

1. Start condition

2. Stop condition

3. Retransmit “Start” condition

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