32C datasheet(39/55 Pages) RENESAS

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R8C/32C Group

5. Electrical Characteristics

R01DS0009EJ0100 Rev 1.00

Page 39 of 52

Aug. 24, 2010

Notes:

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.

1tCYC = 1/f1(s)

Figure 5.7

I/O Timing of I2C bus Interface

Table 5.15

Timing Requirements of I2C bus Interface (1)

Symbol

Parameter

Condition

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 + 500 (2)

−−

tsf

SCL, SDA input fall time

−−

300

tSP

SCL, SDA input spike pulse rejection time

−−

1tCYC (2)

tBUF

SDA input bus-free time

5tCYC (2)

−−

tSTAH

Start condition input hold time

3tCYC (2)

−−

tSTAS

Retransmit start condition input setup time

3tCYC (2)

−−

tSTOP

Stop condition input setup time

3tCYC (2)

−−

tSDAS

Data input setup time

1tCYC + 40 (2)

−−

tSDAH

Data input hold time

−−

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

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