ST92195D datasheet(243/249 Pages) STMICROELECTRONICS

Part #	ST92195D

Description	48-96 Kbyte ROM HCMOS MCU WITH ON-SCREEN DISPLAY AND TELETEXT DATA SLICER

PDF	249 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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ST92E195C/D-ST92T195C/D - ELECTRICAL CHARACTERISTICS

I²C BUS TIMING

1)The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge the unde-

fined region of the falling edge of SCL

2)The maximum hold time of the START condition has only to be met if the interface does not stretch the low period

of SCL signal

Cb = total capacitance of one bus line in pF

Symbol

Parameter

Standard I²C

Fast I²C

Unit

Min

Max

Min

Max

TBUF

Bus free time between a STOP and START con-

dition

4.7

1.3

THD:STA

Hold time START condition. After this period,

the first clock pulse is generated

4.0

0.6

µs

TLOW

LOW period of the SCL clock

4.7

1.3

µs

THIGH

HIGH period of the SCL clock

4.0

0.6

µs

TSU:STA

Set-up time for a repeated START condition

4.7

0.6

µs

THD:DAT

Data hold time

0 (1)

0.9(2)

TSU:DAT

Data set-up time

250

100

Rise time of both SDA and SCL signals

1000

20+0.1Cb

300

Fall time of both SDA and SCL signals

300

20+0.1Cb

300

TSU:STO

Set-up time for STOP condition

4.0

0.6

Capacitive load for each bus line

400

ST92195D Datasheet(PDF) 243 Page - STMicroelectronics

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