R8C datasheet(96/106 Pages) RENESAS

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R01DS0011EJ0100 Rev.1.00

Page 96 of 102

Dec 21, 2010

R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group

5. Electrical Characteristics

Note:

1tCYC = 1/f1(s)

Figure 5.18

I/O Timing of I2C bus Interface

Table 5.54

Timing Requirements of I2C 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.

tSCL

SCL input cycle time

12tCYC + 600 (1)

––

tSCLH

SCL input “H” width

3tCYC + 300 (1)

––

tSCLL

SCL input “L” width

5tCYC + 500 (1)

––

tsf

SCL, SDA input fall time

–

300

tSP

SCL, SDA input spike pulse rejection time

–

1tCYC (1)

tBUF

SDA input bus-free time

5tCYC (1)

––

tSTAH

Start condition input hold time

3tCYC (1)

––

tSTAS

Retransmit start condition input setup time

3tCYC (1)

––

tSTOP

Stop condition input setup time

3tCYC (1)

––

tSDAS

Data input setup time

1tCYC + 40 (1)

––

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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