I2C Bus Controller

SDA and SCL Waveform Characteristics

MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company

299

Panasonic
13.5 SDA and SCL Waveform Characteristics

Figure 13-6 and table 13-5 provide the timing definitions and specifications for

the for the MN102H75K/85K I2C bus interface.

Figure 13-6 SDA and SCL Waveforms

SDA
t
HD
; DAT
P
SCL
t
HIGH
t
BUF
t
HD
;STA
t
LOW
t
R
t
SU
; STO
t
HD
; STA
t
F
t
SU
; DAT
t
SU
; STA
SSr P

Table 13-5 SDA and SCL Waveform Characteristics

Parameter Symbol Min Max Unit

SCL clock frequency fSCL 0 100 kHz
Bus free time between a stop and start condition tBUF 20 — µs
Hold time (repeated) start condition tHD;STA 4.0 —
Low period of the SCL clock tLOW 4.7 —
High period of the SCL clock tHIGH 4.0 —
Setup time for a repeated start condition tSU;STA 4.7 —
Data hold time tHD;DAT 300 — ns
Data setup time tSU;DAT 250 —
SDA and SCL rise time tR— 1000
SDA and SCL fall time tF—300
Stop condition setup time tSU; STO 4.0 µs