MB9B360R datasheet(136/166 Pages) CYPRESS

136 / 166 page

Document Number: 002-04872 Rev.*A

Page 136 of 166

MB9B360R Series

Fast mode plus (Fm+)

(VCC = 2.7V to 5.5V, VSS = 0V)

Parameter

Symbol

Conditions

Fast mode plus (Fm+)*

Unit

Remarks

Min

Max

SCL clock frequency

FSCL

CL = 30pF,

R = (Vp/IOL)*

1000

kHz

(Repeated) START

condition hold time

SDA

↓ → SCL ↓

tHDSTA

0.26

μs

SCL clock "L" width

tLOW

0.5

μs

SCL clock "H" width

tHIGH

0.26

μs

SCL clock frequency

tSUSTA

0.26

μs

(Repeated) START

condition hold time

SDA

↓ → SCL ↓

tHDDAT

0.45*

2, *3

μs

Data setup time

SDA

↓ ↑ → SCL ↑

tSUDAT

STOP condition setup

time

SCL

↑ → SDA ↑

tSUSTO

0.26

μs

Bus free time between

"STOP condition" and

"START condition"

tBUF

0.5

μs

Noise filter

tSP

60MHz

≤

tCYCP<80MHz

6 tCYCP*

80MHz

≤

tCYCP<100MHz

8 tCYCP*

100MHz

≤

tCYCP<120MHz

10 tCYCP*

120MHz

≤

tCYCP<140MHz

12 tCYCP*

140MHz

≤

tCYCP<160MHz

14 tCYCP*

160MHz

≤

tCYCP<180MHz

16 tCYCP*

*1 : R and CL represent the pull-up resistance and load capacitance of the SCL and SDA lines, respectively. Vp indicates the power

supply voltage of the pull-up resistance and IOL indicates VOL guaranteed current.

*2 : The maximum tHDDAT must satisfy that it does not extend at least "L" period (tLOW) of device's SCL signal.

*3 : A high-speed mode I

2C bus device can be used on a typical mode I2C bus system as long as the device satisfies the

requirement of "tSUDAT ≥ 250 ns".

*4 : tCYCP is the APB bus clock cycle time.

About the APB bus number that I

2C is connected to, see “Block Diagram” in this data sheet.

To use fast mode plus (Fm+), set the peripheral bus clock at 64 MHz or more.

*5 : The noise filter time can be changed by register settings.

Change the number of the noise filter steps according to APB bus clock frequency.

*6 : When using fast mode plus (Fm+), set the I/O pin to the mode corresponding to I

2C Fm+ in the EPFR register.

See “Chapter: I/O Port” in “FM4 Family Peripheral Manual” for the details.

SDA

SCL

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